Find cheap flights from Denver to Ireland

Find cheap flights from Denver to Ireland

Search hundreds of travel sites at once for deals on flights to Ireland

Round-trip
Economy
Denver (DEN)
Ireland
Fri 6/11
Fri 6/18
Any month
Compare vs. KAYAK |
There are travel restrictions to Ireland. Learn more
Stay informed and receive email updates for when travel restrictions ease for Ireland.

Good to know

Low season

NovemberBest time to beat the crowds with an average 4% drop in price.

High season

JulyMost popular time to fly with an average 22% increase in price.

Average price round-trip

$908(avg. price over the last 2 weeks)

Good deal round-trip

$473or less

Good deal one-way

$350or less

Top tips for finding cheap flights to Ireland

  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly to Ireland is February.
  • Morning departure is around 23% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking Ireland flights

How long is the flight to Ireland from Denver?

What is the cheapest flight to Ireland from Denver?

Are there Ireland travel restrictions currently due to Coronavirus?

How does KAYAK find such low prices on flights to Ireland?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Ireland?

What is the Hacker Fare option on flights to Ireland?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ireland?

Top 5 airlines serving Denver Intl to Ireland

Scores according to KAYAK customer reviews

8.0
SWISS
Overall score based on 9,001 reviews
8.2
Boarding
7.8
Comfort
8.6
Crew
7.7
Entertainment
7.9
Food
Airline reviews

Pros: "Crew was very nice and responsive."
Cons: "The flight was so hot. No personal air controls. Economy was horribly small."

Pros: "Coach seats were comfortable but if the person in front of you reclines, your video screen will be inches from your face and it becomes difficult to get out of your seat."
Cons: "Crew was not particularly friendly....almost downright rude at times"

Pros: "Great organization, very efficient"
Cons: "Bag fees were not made clear on Kayak or Swiss website, seats on Edelweiss A320 we’re spaced too close together for my legs, though was not a problem on the 777."

Cons: "Guy behind me kept asking for a seat upgrade and when they didn’t oblige spent the whole 11hours kicking the back of my chair in protest. I understand this isn’t the crews’ fault. But maybe the bid upgrade for seats isn’t the best system?"

Cons: "The flight was cancelled and Florence airport staff was extremely incompetent and unprofessional. I spent 12 hours in the airport before getting to Zurich. Won’t get to Chicago until 24 hours after my planned arrival. If I something important then hell would’ve been raised."

Pros: "Crew good"
Cons: "Baggage small bag forced to check"

Cons: "This flight often arrives late so it is difficult to get to your hotel"

Pros: "most of the flight attendants were excellent except one particular one who was basically yelling at passengers. she had a a logo or a badage on her that identifies her as a manager or a crew lead. she had poor manners and need major improvement"
Cons: "the seats are small and very small space in comparison to Lufthansa"

Pros: "On time, nice crew"

Pros: "Steward Very pleasant, helpful and accomodating."
Cons: "No information on the flight about how to proceed with our missed conncetions nor anyone to meet in Zurich at gate with information."

Pros: "Best trip ever, flight crew fantastic. Great hospitality from the crew, pleasant and very personable. Will definitely fly Swiss Air again."

Pros: "Nothing stood out"
Cons: "Nothing Stood out"

Cons: "Our bags were lost in Zurich but the gentleman at the ticket counter was amazing! He even called before we left the airport saying that he had found our bag in Zurich"

Cons: "Entertainment system was not working"

Pros: "A very friendly and attentive crew and a decent meal. Comfort is still iffy in coach but better than most American airlines. Good selection of movies to pass the time."
Cons: "Seats in coach are cramped and some have an electrical box under the seat in front of you, so there is no room for your legs or carry on bag. Bathrooms keep getting smaller to jam in more seats."

Cons: "No leg room very uncomfortable"

Pros: "I was flying business class so staff, food, etc was excellent"
Cons: "I do not understand why arriving to checkin with 90 min, on a DIRECT flight, in business class they can decide to not lead luggage at ZRH. We had to wait for all luggage to come out, then go to lost and found, what is more puzzling is that then they tell you the luggage will be loaded on next flight, arrive at night, but will not deliver it until after 3PM on next day. This is flying business class. Swiss begins to feel like a low cost"

Pros: "friendly ,respectful, helpful,informative"
Cons: "the very long layovers.i did not enjoy complications to find a place to rest between long flights."

Pros: "Staff and flight was really great. Everything went smoothly and on schedule. The plane was clean."
Cons: "The seating was almost unbearable. So small and cramped. Arm rest didn’t go all the way up so very hard to cuddle with my seat mate (my daughter). I couldn’t even put my arms by my side without pushing my seat neighbors off. Seat in front of me was in my lap. Hard to get out of seat to use restroom. Way to tight. Long flight from Boston to Zurich was so hard to bear. I understand making money...but this is ridiculous!!"

Pros: "After almost completely adapting to the spartan amenities of US domestic airlines, my recent SWISS flight had a too-good-to-be-true quality that rendered my travel companion and I giddy with delight. My dinner (one of three food services) consisted of chicken, potatoes, steamed broccoli, salad, a dinner roll with butter, gruyere, and a strawberry tart... included cream and sugar signaled an inevitable coffee service. This was accompanied by complimentary wine and sparkling water, and heavy-weight stainless cutlery. The seat reclination was good, and the in-flight entertainment was a cut above. Coming off many Frontier flights with pay-for-beverage service, no leg-room, and un-reclining seats, it was about as good as coach can get. I'm actually looking at SWISS routes first before I plan my next vacation."

Pros: "Food and movies"
Cons: "Staff was not attentative. We were very misinformed on the seat upgrade we paid $100 for. And our liggsge was damaged and they had us walking all over ohare airport for no reason at all instead of addressing the issue at Swiss air."

Pros: "Professional crew"
Cons: "Legroom!!!"

Cons: "Booked four flights from Zurich to Prague, but plans changed. No way to get a refund or cancellation although I tried two weeks beforehand. Disappointing to say the least."

Cons: "At the Budapest airport the attendants were not willing to accommodate to check in my second luggage without a fee, despite the fact that I have a Miles & More card. On the way from NY to Budapest I checked in two luggages prior to arriving to the airport with out any fee. I would like Swiss air to issue a refund. I have my receipt for the excess luggage fee. Thank you, Eva Baud"

Pros: "The crew made the right call after the Swiss computers shutted down"
Cons: "Boarding problem. But I have to congratulate the crew for their efforts to overcome the problem in the best possible way"

Pros: "Good crew and clean plane"

Pros: "Traveling with 3 kids, Swiss kept our seats the same, had our special meals sorted, crew was kind and courteous. Entertainment for everyone."
Cons: "Overnight flight lights too bright, economy seats very narrow (and that's all we ever fly), it was extremely difficult to sleep."

Cons: "Minimalist breakfast."

Pros: "The flight crew was super friendly and efficient. Lots of leg room and the croissant is a nice touch!"

Pros: "Flight was not full and I was able to have several seats to spread out"

Pros: "crew very friendly.food excellent- thai curry vegetables, snacks. the flight arrived ahead of schedule despite slight delay. I appreciated that this was Swiss operated so no charge for skis, boots and poles."
Cons: "Not sure why loading is not by aisles, seems not that efficient"

Pros: "Super nice and skilled staff, everyone was great to interact with."
Cons: "Not a thing."

Pros: "Friendly and attentive staff, plenty of good food and beverages. Comfortable seats"
Cons: "There wasn't anything bad"

Pros: "Business Class price was 50% lower by buying the ticket on El Al site rather than buying direct from Swiss Airlines."

Pros: "On time"
Cons: "Seating was very tight, confining."

Pros: "Nice smooth flight, good service, comfort, food, crew, and entertainment. Crying toddlers made it hard to sleep."

Cons: "At the check-in gate there was pandemonium. It was not clear how to proceed. The lines were long and disorderly. Since I had passed through passport control, I didn't think I would need to go through again just before boarding. I was in line, ready to have my boarding pass scanned when I was told I needed to have my passport checked! I had to step out of line, go back and get my passport checked, then go back in line to board! I could not get an assigned seat until I got to Zurich. I needed an aisle seat (I had a bladder infection and would need to use the toilet often). It was left up to me to negotiate with my neighbor to switch seats--- the crew would not help at all. I was cramped in my seat. The man in front of me put his chair too far back; I was difficult to work on my laptop with so little room between me and the table. The snack was horrible---uncooked, tasteless calzone and ice cream."

Pros: "Staff was friendly and accommodations were nice"
Cons: "Delayed flight and lost my luggage..."

Pros: "- Lots of snacks selections during the flight - Great selection of Movies - but unable to watch them"
Cons: "- No special treatment for Star Alliance Gold Member - Crew member forgotten my drink order completely - Entertainment system was not working after 7 Restart attempts - The whole entertainment system is very 90's - OLD and ready to retire - There were crumbs or foods left over from previous flights on my seat and tomato sauce on the tray table - Foods selections was not that great"

Pros: "I enjoyed the service provided once we boarded the plane."
Cons: "The plane was delayed for over 5 hours. The transfer desk crew was not the most welcoming staff. Very rude."

Pros: "Time of flight"
Cons: "Food and entertainment were not good. Person next to me smelled bad"

Pros: "Crew was excellent, and the food was both ample and appetizing."
Cons: "The boarding process is a little chaotic for the economy cabin since there is no distinctions by zone or seat row. The result is a bit of a surge when they first announce the boarding of the cabin."

Pros: "I did not like anything about this flight"
Cons: "My flight has been cancelled with no ecplonation. They reissue e ticket for me under different name. The crew were very rude . My suitcase was lost and still I have not received it . They promised to deliver ."

Cons: "Boarding was awful. It was not claear where the line is for the business class and for the econom class."

Pros: "Flight attendants were perfect, sincere, and friendly. Great selection of free movies."
Cons: "I could not open my laptop and do any work once the person in front of me put their seat back. Big time bummer."

Pros: "mtl to Zuric was t"

Cons: "excellent food and hospitality"

Pros: "People were friendly."
Cons: "Boarding was little confusing"

Pros: "Everything. Service was excellent."
Cons: "Everything was very good."

Cons: "A quick drink service would have been nice, it was provided on the same flight going the opposite direction"

Cons: "100% as always.. delta has never disappointed! Keep up the good work guys"

Pros: "The crews were super accommodating and my seat was so comfortable I actually feel asleep which is something I have never done on a plane before."
Cons: "Load the plane from back to front. It makes sense as people leave the plane from front to back"

Pros: "Good"

Pros: "Availability of WiFi, a charging port and media options puts Delta a step (or two) ahead of their competitors. The professionalism of the crew, as well as the complimentary food/beverage options are also excellent."
Cons: "Not the airlines fault, but my 6’4” frame doesn’t fit very well in a middle main cabin seat."

Pros: "In flight entertainment"
Cons: "Food provided, other than snacks, would be a plus"

Pros: "We arrived eventually."
Cons: "Flight delayed three hours. Payed extra for an earlier flight. Very disappointing."

Cons: "Delayed 4 hours"

Pros: "Crew."
Cons: "Getting to Venice on time. Our late arrival cost me a 90 euro shutle."

Pros: "Comfort + was nice."
Cons: "Had a middle seat between two other men. I was given my seat by the gate. It would have been nice if they placed my more strategically. That might be asking too much but seems reasonable."

Cons: "Choice of healthier snack"

Pros: "Nothing spectacular."
Cons: "The headrests won’t stay up. And it’s hot."

Cons: "Have rhe right to carry at least one luggage per person at no cost. Besides carry on and personal item. Tickets prices and luggage costs are extremely expensive."

Cons: "Seats are so small. Flight was delayed."

Pros: "Staff from Check in to aircraft very pleasant. Snack choice in Coach impressive."

Cons: "Denver airport is far too large for there to be such a small security check therefore it took forever and I missed the flight. Delta tried to charge me $1000 for another ticket to Albany and I decided to fly with another airline for half the price instead"

Pros: "Nothing"
Cons: "I bought a ticket thinking i bought it through kayak but I actually bought a ticket through a third party in India. Where no one spoke good English. I called the agency to find out if I needed a Visa for my visit to Australia and the told me no. So when I showed up to the airport I didn’t have the right documents and I MISSED MY FLIGHT. Also the wouldn’t just change my flight and charge me the change flight fee. They cancelled my flight entirely and made me buy a whole new ticket!!! Worst flight experience I’ve ever had and this is not my first time flying to Australia or out of country."

Cons: "Had to wait for the crew from another flight before boarding p"

Cons: "The seats were in bad condition, I was surprised as Delta usually has well cared for interior and exterior airplanes."

Pros: "The flight attendants were all helpful and pleasant. The seats were comfortable. We were provided with plenty of liquids."
Cons: "The landing was pretty tough and we took off almost a half hour late."

Pros: "Check in Denver super helpful Gate staff hustled to turn around flight Flight crew excellent"
Cons: "Flight delayed, almost missed international connections"

Pros: "Boarding, friendliness of staff"

Pros: "Everything was easy and smooth."

Pros: "Anything from free WiFi, entertainment, leg room, commentary drinks and snacks. Great service!"

Pros: "The staff was polite and snacks were good (healthy options)."
Cons: "Nothing was terrible, but due to the short flights I assume they don’t worry about having planes with entertainment available."

Pros: "Short flight"
Cons: "In SLC they boarded by row numbers and not zones. Weird..."

Cons: "Engine problems-2 hour delay"

Pros: "The fact that there was a screen for movie selections and a charging port for my phone and the flight attendants were super nice"

Pros: "Good flight crew"
Cons: "Delayed due to mechanical issues. For 3 hours. No offers for free drink or wi fi. When we finally land we were on the runway for half hour."

Pros: "Everyone was fairly friendly"
Cons: "Cramped foot room"

Cons: "Bags never arrived at the listed baggage claim. After 45 min, I saw bags on a different claim station and I notified everyone standing around. BUT, I filed a claim with Delta and was immediately given 2500 miles, as guaranteed!"

Pros: "Nothing!"
Cons: "Everything"

Pros: "Delta is great"

Cons: "Poor Delta DEN counter agent experience. Name on ticket didnt match Delta profile name nor TSA [rofile name. Delta counter agent would do nothing, except blame TSA. Would not check ticket name vs profile name. Happened two consecutive flights. Flight tomorrow morning has no TSA Pre clearance on boarding pass. This will be three consecutive flights. Also seated me next to a person who needed 2 seats to himself. Please never seat me next to a passenger who cannot fit in their own seat. I am switching to SWA."

Pros: "On two of the legs of the trip they notice I was a tall person with long legs and upgraded me to seats with more leg room!! I didn't even ask. Thank you."
Cons: "On the way back there were open seats with extra leg room and I asked the gate attendant if it was possible to switch my seat to one with more room and they said they only could if I paid extra."

Pros: "Crew was nice."
Cons: "The Entertainment sucked. Again I was sitting in comfort class which in theory should buy you more comfort and better entertainment. There was a ton of movies from the 90s and the same movie selection from about 6 months ago when I traveled with them. Also, what is going on, with having to use your own cell phone to watch movies on the plane? Whatever happened to the screens in the backseat of the front seat? I ended up with neck pain from trying to watch a movie on my phone. Delta has become very cheap. It is going into some serious decline."

Pros: "Entertainment system is awesome and similar to what I usually see only on international flights."

Pros: "Most comfortable flight I have taken in some time. Spacious seat, power, good entertaiment, attentive flight crew. On time. Not usually a Delta flier, but times and destination made Delta the choice. Turns out a great choice."

Pros: "What a city.. Unique for hell sure..."
Cons: "Nothing"

Pros: "Crew was the best!"
Cons: "I really dislike the snack boxes. Snacks need to be more like a small sandwich or grapes, cheese and nuts. Not all that packaged stuff."

Pros: "Boarding super excellent! Also: Best landing I've ever experienced! Props to the pilot!!"

Pros: "Newer plane with movies."
Cons: "Airlines pack you on so tight."

Pros: "Excellent crew and comfortable flight"

Pros: "Friendly Staff"
Cons: "Check in was very hectic due to limited staff and getting bumped by the red carpet flyers. Boarding is always a little congested due to the lines. Better snacks please!!"

Pros: "We purchased economy tickets in Delta. With these tickets you don't know where you are sitting until you get to the airport. Well, we lucked out and got the Plus seats! We got free alcoholic drinks, and big plush seats! We left right on time and got there early! Overall a great experience!"
Cons: "Nothing."

Pros: "Great,I loved it!"

Pros: "The moviea"
Cons: "The time of night"

Pros: "I didn't like anything because the fly leat 3 hours"

Pros: "Smooth ride. Delta got everything right from takeoff to landing."

Pros: "Entertainment options"

Pros: "The crew was fun, informed, and very helpful."
Cons: "The seat, the entertainment, the headphone jack, the food."

Cons: "Flight late more than 3-4 hours on Frankfurt. So upset. I will never and ever try with Frankfurt again. I bought shortest way ticket to pay more money but unfortunately flight late about 3-4 hours. Money trap. I would love to have another free flight or I will post the tickets on facebook, Twitter and etc... To make a terrible flight reputation."

Pros: "Seat was comfortable, food was good."
Cons: "The woman seated next to me was the mother of one of the flight attendants. She had terrible body odor that nearly brought me to vomiting—and this was a 10 hour flight. She was also brought all kinds of amenities from the attendants from the 1st class cabin—not really appropriate."

Pros: "More leg room"
Cons: "Leg room and bigger seats"

Cons: "Flight was delayed"

Pros: "Beautiful plane, economy seating more generous than normal, excellent in-seat entertainment (easy to navigate, more options than I've ever seen before). Well done!"

Pros: "I was happy with everything stewardess where very friendly everything went smoth"

Pros: "Great"
Cons: "No problems"

Pros: "Most uncomfortable flight in years. No space. Hard seats, horrible food, had to beg for water. Little service, and not friendly. Overall a horrible flight. At least we made there on time"

Pros: "The crew and amenities are excellent!"
Cons: "Economy space is really tight."

Pros: "Staff was very responsive and quick to disperse food and beverages."
Cons: "I didn't care for the breakfast. The eggs tasted like the chicken and rice from the meal for dinner."

Pros: "Nothing"
Cons: "I have been transatlantic for forty years on various carriers. Without a doubt this was my worst flying experience ever."

Pros: "Lufthansa service is better than any us carrier"
Cons: "They didn’t track my luggage Lost bag for two days"

Pros: "This flight is usually fully booked but there happened to be an empty seat next to mine which was much appreciated"
Cons: "Nothing"

Pros: "I like the Aircaraft - A350-900 and service"

Pros: "Efficient"
Cons: "Plane was HOT"

Pros: "movie selection"
Cons: "I missed my lufthanza connection"

Cons: "Horrible customer service"

Pros: "everything"

Pros: "Food. Variety of entertainment. Flight had empty seats."
Cons: "Over an hour delay sitting with bad air quality. At least it was only 20 minutes late so I didn't miss my connecting flight."

Pros: "Great service. everything was on time, or early. overall pleasant experience."

Pros: "Great service!"
Cons: "Breakfast and movie selection could have been better"

Pros: "Visa for India was not checked in Denver. Landed in Frankfurt and discovered that the visa was expired. Stuck in Frankfurt for 3 nights until new visa was issued. No babes the entire time I was in Germany. Arrived in Mumbai after paying the $350 US change fee and no bags. Bags finally arrived on Monday at 9AM Without clothes, toiletries and medications for 6 nights. Now I am delayed and will probably have to pay rebuke and fare change to extend my stay here."

Pros: "Slept like a baby with no interruptions."

Pros: "1 hor 30 minutes instead of 2 hours 15"
Cons: "Worst food ever, and zero entertainment"

Cons: "Limited choice of types of meal - no vegetarian option."

Pros: "The crew was very friendly and polite. The airplane was clean. The boarding was quick and easy. The entertainment was varied and enjoyable."
Cons: "It wasn't an issue on my flight since there were empty seats in my row, but I don't enjoy the spacing provided for personal items on the floor under the seat in front you. For four seats there are three sections; so, you can hope that someone doesn't need any space or else you have to decide how to awkwardly split it up."

Pros: "very professional cabin crew"
Cons: "The overhead bins are way too small, and they ran out of the vegetarian dinner option. There are no longer air controls for each seat, and the plane was quite cold."

Pros: "See above"
Cons: "See above"

Pros: "The best in-flight service I have ever had on the Lufthansa flight from Denver to Munic!"

Cons: "We were charged a rebooking fee by Lufthansa when customs searched luggage causing us to miss connecting flight"

Pros: "Crew worked very hard to accommodate us."
Cons: "Was seated in a section with many noisy infants. I could not sleep or even hear the entertainment system sometimes. Not the airline's fault. People should know better than to travel with infants. I felt sorry for the crew."

Pros: "Great crew service"

Pros: "Great service, on time departure, excellent amenities"
Cons: "The flight was over before I expected it!"

Pros: "the crew are exellent"

Pros: "Got upgraded to Business Class"

Pros: "Flight was on time comfortable good crew clean and upbeat"
Cons: "Boarding"

Pros: "Lufthansa certainly stands out above ALL American carriers"

Cons: "The crew we had was very impatient and irritated quickly. The flighy attendent name was Jorge. Starting at the beggining of the flight before we took of I asked him about the head phones. One child had one on tye chair and I asked him if its suppose to be on the seat or given later on. He said it will be passed later and then with a patronizing manner he gave another head phone set and said: "I guess we havw an emergency". On the flight, every time he with the food and drinks he just stood there next to me talking over my head with the passenger begind me. Very uncomfortable, especially when it happens 6 or 7 times. When asking what drink we wanted ( the first time), i replied apple and orange juicewith no ice. He replied, with a patronizing manner "this it European company, not American company. Here we don't put ive if you do not ask for it".The incident that bother me the most is one that involved my kids also. My daughter (3 years old) was a bit scared of the flight, tired and did not want to sit on her chair. We tried to keek her on the chair buy she started crying laying down on the floor infront of our seats. Jorge the flight attendant saw her and told me to put her on the seat. Not in a manner I expect out of soneone in the service industry. I told him we are working on it and we will have her on the chair as soon as we can. When I said that he got irritated and a bit aggressive. For no reason the situation became hostile. The flight attendent on the other side (do not know his name). Can over and asked us what we needed amd if we need help. I told the other flight attendant we need 5 minutes and he said OK. After a few minutes she calmed down. Anotger passenger asked Jorge what beer it is and he replied, with contempt, " its German beer, its good"."

Pros: "Good flight good seats smooth ride."
Cons: "Boarding was not organized."

Pros: "United is a good partner to Lufthansa. I like United. It was a quick flight, but a good one."

Pros: "Everything"

Cons: "Couldn't sleep because of seating."

Pros: "No communication"
Cons: "Unhelpful and now luggage has been lost going on 3 days in same clothes"

Pros: "Nice crew"
Cons: "Lack of leg room!!! After my bicycle box was inspected they failed to secure my bike the way I had it in the box. Bike was flipping around in box. Bent rear brake calipers. Bent brake hoods. Rear skewers were uncoupled. No way to treat a $10,000 bike! Very upset!"

Pros: "Pleasant crew."
Cons: "Annoying kids in seats behind us :( Not enough leg room for someone over 6 feet tall."

Pros: "Excellent service from a very friendly staff. Wonderful entertainment options to pass the time on a lengthy flight. Couldn't have been a smoother experience."
Cons: "Nothing at all!"

Pros: "The direction"
Cons: "One flight attendant was rude to me"

Pros: "The food was very good. The service, the preciseness."
Cons: "I didn't like the entertainment, there should me more options for movies in English and Arabic."

Cons: "They cancelled the flight and did not help at all for rescheduling."

Cons: "Check in slow."

Pros: "Captain gave some nice hotspots to look out for as clear day."
Cons: "Standing for ages before boarding and in plane. Very basic and couldn't print boarding pass before travel. Seemed like a glitch with Aerlingus and I phoned but said they would forward to technical dept. No one got back to me. This caused unnecessary stress due to connections."

Pros: "Seats are nice and comfy"
Cons: "Flight was late. Ground crew were atrocious and lost passengers and then insisted on counting the whole plane twice (as they got it wrong the first time). The flight was delayed by 4hrs in total and then Aerlingus denied compensation was due. Appalling performance"

Pros: "Comfort. Ease of travel."
Cons: "Inflight shopping range"

Cons: "fly cleanup"

Pros: "Same comments"
Cons: "Same comments"

Pros: "I'm very angry that the ticket sold to me was British Airways and I was told on the airport by British Airways that I should check in at the Air Lingus counter! This is cheating and false advertising!!!"
Cons: "Everything could have been better!"

Cons: "Overall pleasant More pleasant than with some other carriers recently"

Pros: "Ontime"
Cons: "Food alright"

Pros: "Pleasant cabin crew"
Cons: "Disembark down steps at back of plane onto tarmac then carry bags up two flights of steps, tiring and dangerous of falling"

Pros: "Flight crew were super friendly and helpful."
Cons: "AerLingus representatives noted that my luggage would be shipped directly to Ottawa (Madrid-Dublin-Toronto-Ottawa) - this was false and caused significant pain in Toronto,"

Pros: "The airplane, crew, service, hospitality, and enternaintment were great."
Cons: "Logistics of US border control while leaving Dublin was not as efficient nor smooth as the EU side."

Pros: "The ground staff at Heathrow were friendly"
Cons: "The old A320 is among the most uncomfortable planes imaginable, but the flight is short"

Pros: "Plane was clean, comfortable, food was okay."
Cons: "Flight was delayed, update from the gate was 10 minute delay, actually the delay was an hour. Paying for beer and wine on a national carrier - really. Service was one and done, if you missed the first pass the crew were not coming back...you can however walk to the galley."

Pros: "Free checked baggage. Calm atmosphere.. low marks for food and entertainment because there was no option to say not applicable. The options in the magazine were reasonable."
Cons: "None"

Pros: "See above."
Cons: "See above."

Pros: "Great new seats"

Pros: "The flight was short."
Cons: "I am 6ft 2ins. and the legroom was awful. My knee still hurts. The staff was not very friendly. It’s amazing that flight attendants don’t realize that they work for the passengers and not vice versa."

Pros: "From JFK to Milan, it was OK and while we were squashed cos we hadn't been given the opportunity to book a comfortable seat before check in (and there were none left by the time we checked in), the on flight entertainment was bearable. This for the flight from JFK to Dublin."
Cons: "The flight from Dublin to Milan was dreadful. The seats were even tighter and again we hadn't been given an opportunity to book our own seats so...there was no on flight entrainment. Very uncomfortable. Never again."

Pros: "Crew"
Cons: "Dirty aircraft. Almost 1 hour delay."

Cons: "We were told to be at the airport 3 hours in advance of our 9:35AM flight. We arrived at 6:45 to find a line of passengers at the aer lingus counter and no personnel. It was at least 1/2 before anyone arrived for work. The gate on the boarding pass printed that morning, was the furthest gate and a very long walk. When we arrived there we were told it was changed. We heard a lot of gate changes over the loud speaker, but no announcement from aer lingud. British airways was at"

Pros: "Really comfortable seat"
Cons: "Had to divert to Shannon due to fig. Bussed in FREEZING ancient vehicle to Cork"

Pros: "Friendly helpful crew"

Cons: "Terrible"

Pros: "The economy seats are more comfortable than average transatlantic flights on other airlines, albeit far from perfect. The meal was nicer too. The crew both onboard and on land was nice and attentive."
Cons: "The entertainment system is slow and the selection of films to watch could be better."

Pros: "Friendly crew"
Cons: "Delayed by 30 minutes"

Pros: "check in was efficient."
Cons: "purchase of beverages; lack of understanding food schedule"

Pros: "Nice staff. Reserved. Comfortable seats! Spacious."
Cons: "Movie and music selection. Classic Movies? Please...Where was The Godfather, Gone with the Wind, Breakfast at Tiffany's, Rocky, Annie Hall, Die Hard."

Pros: "The flight was very bare bones. Entertainment system froze up half way into a movie. You had to pay for wine with dinner. Even on budget carriers, wine is included with meals on the long hauls. Half a cup of water was served twice during the flight. The cabin was kept quite cold. I wore thick socks and slippers throughout the flight, but had to use the small blanket provided to keep my feet warm. Glad I had a heavy coat! I will avoid this carrier on any long hauls in the future."
Cons: "Dinner not too good. Breakfast very poor. Cold flight. Entertainment not working. Avoid for long hauls."

Pros: "Not a thing"
Cons: "Your company pulled a bait and switch. You stuck me with the most unprofessional and uncooperative packager in the industry. I wasn’t apprised by Kayak that you were pawning me off on a sleazy packager."

Pros: "Lovely crew"
Cons: "Aer Lingus are always late departing, but it was a blessing this time as I'd have missed the connection otherwise!"

Pros: "The crew was nice"
Cons: "Boarding was elated for two hours due to a problem with the air conditioning. We sat on the tarmac another hour before take off. The seats are uncomfortable, especially when sitting for nine hours."

Pros: "Ahead of time"
Cons: "Last persons rubbish left in Seat pockets"

Pros: "Great service as usual"

Pros: "Punctuality and cost"

Cons: "Would like to be at least able to state a seat preference. With a tendency to be claustrophobic, a middle seat is the worst. Fortunately it was a short flight"

Pros: "Staff was always nice & helpful."
Cons: "Seats are uncomfortable and arm rest doesn't fully fold back. The airplane wasn't cleaned up after the previous flight so there was a few wads of tissue paper around our seats."

Cons: "The line for checking in was very long and the workers were very slow and not too friendly. The boarding was carried out in a first come first serve way. People started a line and instead of calling passengers by number groups, those in charge did nothing! So, my husband and I waited and noticed that people were boarding as is."

Pros: "Friendly, helpful, positive crew. Clean plane. On-time departure & arrival"
Cons: "Only food offered was for purchase - even snacks. :-("

Pros: "Short flight to London"
Cons: "There was no boarding pass issued for the Lon - Ny trip. Additionally, when we arrived to London, there was no direct transfer from our landing gate to our departure gate forcing us to have to exit and then reenter. There was no ground avail to assist either. Since the dub - Lon flight was delayed, we have 60 min to get a boarding passes / re renter security / & had to run to the flight which was a mile all with a 2 yr old."

Pros: "Ahead of time"
Cons: "Nothing."

Pros: "The food was wonderful - all hand packed in Ireland. Particularly liked the ice cream! (Better than United, Delta or Southwest. Not as good as Qatar Airlines.) The staff was particularly positive and upbeat."

Pros: "NA"
Cons: "Other passengers didn't understand how pounding on the back of a seat affects the passenger in the seat"

Pros: "Boarding was quick and efficient, the flight arrived 10 minutes early."
Cons: "There was no food or entertainment offered, aside from what you could purchase. But as it was a very short flight, this didn't make much of a difference for me. Overall, good short flight."

Cons: "The flight was cancelled"

Pros: "Very accommodating and helpful. Food was much better than the flight over from Boston. The in flight entertainments worked. Didn't on the way over from Boston. Thank you for that."

Cons: "Most airlines do boarding by letting people who seat in the back of the plane first. Air Lingus let all people go in at the same time which causes chaos."

Cons: "Professional staff"

Pros: "Going through U S immigration and customs in Dublin."
Cons: "Food could be better. Seats could be more comfortable."

Pros: "Aer Lingus' international flights have a while's way to go before it can rival that of Singapore Airlines (in terms of food & comfort), but overall it was good for the price. It was spacious enough for my 12" MacBook to be used, but as is the case with all flights, it gets crammed when the front passenger reclines."

Pros: "Our children were given an activity bag as we boarded the plane, and that was nice"
Cons: "The first problem was that we had to pay $95 per check in bag—A total of $800 extra round trip! That was a shock and very angry. Next we were told we would get a free meal on the international flight but there was no meal—for 7 hours! Then $12 for WiFi. We will never fly Iceland air again!!"

Cons: "They did not have hamburgers but when I called about seat reservation I was told I had order a hamburger but they weren’t even on the menu."

Cons: "Will never fly Iceland air again. N Horrible customer service"

Pros: "Reasonable fares. Good baggage accommodations. Denver to Iceland direct. Nice flight staff. The flight attendant pointed out the people who were awake the northern lights which was definitely the highlight of my trip!"
Cons: "Seats small. Surprised no meals unless purchased. But didn’t matter too much I ate before the flight left. And it was nice to have something to purchase if needed. It was confusing where I could purchase my baggage ahead of the me while checking in online so I just paid for it once I got to the airport."

Pros: "In time, no delays, very kind crew"
Cons: "Small selection of movies."

Pros: "I’m usually easy to please but there wasn’t much to say that’s positive. Maybe the staff was helpful?"
Cons: "Air was out in coach so everyone was sweating in a sauna, while first class was cold and didn’t want the air any higher, major problem, needed to sleep but could get 15 min in. Worst flight I’ve ever been on, never been that uncomfortable in the air before"

Pros: "Lots of legroom choice of entertainment"
Cons: "Flight delay. Long walk to gate for departure"

Pros: "On time departure Landed earlier than expected"
Cons: "Disappointed alcohol was not complimentary like all my previous international flights."

Pros: "Great crew, comfortable seats although was unable to choose seats prior to check in."
Cons: "Got charged for bags when we had booked regular economy class, NOT economy “light”. Was told the baggage policy changed since we booked - TOTAL BS! Also, c’mon, give us ONE free beer on a 7 hour flight."

Pros: "The overall mediocre entertainment was the best part."
Cons: "Bag drop took 75 minutes waiting in a line with minimal signage. The middle seat is not designed to accommodate a small backpack, let alone, my tiny, size 5 feet. There are no snacks provided (7.5 hour flight) and NO refills on WATER!!"

Pros: "They boarded the back of the plane first. The flight was on time."
Cons: "Checked-in online, got baggage tag from kiosk, only to find that there was no baggage drop, and everyone had to stand in line whether they had already checked-in or not. They had several airlines mixed together and no signage to tell you where to go, so people ended up in the wrong place first. Knew there would be no food, so brought snacks, only to have the crew tell us there was a person who was allergic to peanuts on the flight and we were not allowed to open our snacks because they contained peanuts."

Pros: "The movie selection was good."
Cons: "When I purchased these tickets, they promised one free per person checked bag and an included meal. Did not get these had to pay for them. Kinda annoying had to pay for those when the tickets originally promised these amenities."

Pros: "The flight was smooth and the service was great."
Cons: "Nothing to complain about"

Cons: "Surprised by very large bag fees, reservation was unclear about baggage allowance and charges."

Pros: "Price"
Cons: "Flight was canceled due to strike in Iceland, and Iceland Air offered NO COMPENSATION. We were stranded in the Denver Airport for two days with kids, but our dog was not brought back to us during that time. We were finally re-routed via another airline."

Cons: "I thought there would be an on flight meal with the international flight."

Pros: "Comfortable planes, nice crew, great pilots"
Cons: "No food served"

Pros: "Clean. Good service. Just way better than most domestic flights in recent memory."

Cons: "Never flee international without getting a free meal before. Pretty sad. Plus, they charged for earphonestoo. Ridiculous."

Pros: "Nice people, efficient, Good coordination of flights in Reyjavik."
Cons: "Food and seats. All airline seats are made for very tiny people. I was cramped and I'm not fat."

Pros: "On time, good service, quick boarding. Overall very good experience."

Pros: "Comfortable. Best fares. Nice flight attendants. Good movie and tv options for those of us who don't sleep!"
Cons: "Music options. Classical would be nice to encourage sleep."

Cons: "Lack of food for a 7hr flight"

Pros: "Crew was nice"
Cons: "Tight fit...herded like cattle in Iceland...barely made my connecting flight. No one available to give info on where to go or why we were delayed. Oh...and seven hour flight...no food. But pretty sunset"

Cons: "3 hour delay from Denver translated into a 6 hour delay to my final destination. Food on board is expensive, even when other airlines offer food in their ticket prices. Very likely will not fly on Iceland Air again."

Pros: "I liked how small the airport was in Iceland no freaking out when your plane lands and your connection is already boarding"
Cons: "There was no meal provided which was a bit of a surprise for an international flight.."

Pros: "Best airplane experience I've ever had! Great airline!"

Pros: "Found Iceland Air flight cancelled at airport after a thirty minute wait in line and finding the ticket agent. Eventually given phone number, called and found re-booked on Lufthansa Airlines. Now that flight was perfect, with the best Airline Food ever. Booked through Frankfurt with great connection to Amsterdam. Will compare if we get return trip through Iceland Air."
Cons: "No E-mail or other notice as to cancelled flight. No sign at counter. No specific agent found. Finally upon talking with a substituting Lufthansa agent we were given a number to call. Very bad customer service at the counter."

Pros: "Non stop great service"
Cons: "Nothing"

Pros: "Very comfortable seat in row 5"

Cons: "They dont offer a meal for free."

Cons: "My wife's bag did not make the plane from KEF to AMS. Still hasn't arrived 30 hours later."

Cons: "Depending on the seat you get (aisle, middle, or window) you either can or cannot fit anything under the seat in front of you. Each seat has different space. What I usually take wouldn't fit anywhere but the window. The middle seat space is USELESS as there is something installed that MAY give you about 6 inches from floor to it. The aisle seat's forward under space is a cube shape, so typical carry-ons won't fit there either. As I slept the whole way to Reykyavik, I don't know much about the service. The under seat space may lead me to not booking Icelandair again."

Pros: "Icelandair is great because your connection waits for you even if your flight is late."

Pros: "Nice warm blankets."
Cons: "45 minutes to change planes and go through customs and use the restrooms is too short."

Pros: "The crew was nice and it was nice that they gave my 8 year old son an activity bag and free meals. The entertainment center was great. The flight was on time and everything seemed to run smoothly."
Cons: "It felt like a domestic flight in that there wasn't a lot of extra space and we had to pay for everything (food, snacks, headphones, wifi) aside from soft drinks."

Cons: "Movie selection"

Cons: "No blankets and the temp in the plane was freezing. Possibly this is only for this specific flight, very little info on delay and almost no info on what was going on."

Cons: "Arrived late."

Cons: "Meals on menu were not available."

Cons: "Got bumped from flight and caused layover. Lost baggage. Tv sound did not work in air."

Pros: "I enjoyed everything about my experience with Icelandair. I am going to be flying into London through them for now on and hopefully on an annual basis!"

Cons: "The movies were all old, no new variety. They refused to let us take our bag on to the plane even though it fit in their provided sample bin and made us check it at the gate. There was plenty of room on the plane bins and several bigger backpacks than our small duffle bag! This caused us a lot of extra time spent upon arrival waiting for it"

Cons: "you cancelled my flight, no more Iceland air for us, we had to cancel our entire vacation."

Pros: "-This was the first time flying with Icelandair and will definately fly with you again. Hot coffee was very good and so was the Yogart."
Cons: "Not having a meal available. Next time I will know to pack a sandwich."

Pros: "Folks were friendly and efficient."
Cons: "Not enough space"

Pros: "I appreciated the fact that we were able to fly out despite there being a major snow storm and closed airport just hours before our takeoff. We also appreciated being able to switch our connection flight fairly easily once we knew we would be delayed. The staff was very kind and since we had a longer layover in Keflavik, we were very grateful for the food vouchers to used in the airport while we waited."
Cons: "The airline wouldn't make a decision about whether or not the plane would be flying out on time or be delayed until about an hour before our original boarding time. Seeing as the airport and only road getting to the airport were closed, it seems like they would have been able to make that decision and alert all passengers much sooner. We kept calling in to check on the flight status and they said we would receive texts and emails with any changes, but I never did."

Pros: "Huge snowstorm in Denver caused the airport to shut down. Plane left about 5 hours late. We missed our connection and even though it wasn't Icelandic Air's fault they gave me a taxi, a room and three meals until I caught my connecting flight the next day. Amazing service."

Pros: "Comfortable seat and enjoyed movie/TV selection."

Pros: "I liked the professionalism of the crew, the comfort of the seating, and the blankets. I found the safety briefing very creative and entertaining."
Cons: "I did not like having to pay for snacks or the fact that our row could not access the flightpath on our screens. I also was most annoyed by the passenger behind me who seemed not to know that her tapping fingers on the screen in front of her were actually tapping the back of my head as I tried to sleep. Perhaps airlines could remind passengers that what they do to the seat in front of them affects the occupants of those seats?"

Read more about SWISS
COVID-19 information

Safety measures for airlines flying from Denver to Ireland

Airlines flying from Denver to Ireland have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Denver to Ireland

Mandatory masks

Masks required on board, masks provided on flights from Denver to Ireland

Social distancing seating

Middle seats unavailable to book on flights from Denver to Ireland

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Denver to Ireland

Book cheap flights from Denver to Ireland

Recent round-trip flight deals

10/23
Sat
1 stop
Icelandair
11h 15m
DEN - DUB
11/2
Tue
1 stop
Icelandair
13h 40m
DUB - DEN
10/23
Sat
1 stop
Icelandair
11h 15m
DEN - DUB
11/13
Sat
1 stop
Icelandair
13h 40m
DUB - DEN
11/1
Mon
1 stop
Icelandair
11h 05m
DEN - DUB
11/13
Sat
1 stop
Icelandair
13h 40m
DUB - DEN
10/25
Mon
1 stop
Icelandair
11h 15m
DEN - DUB
10/30
Sat
1 stop
Icelandair
13h 40m
DUB - DEN
7/8
Thu
1 stop
United Airlines
30h 15m
DEN - DUB
7/19
Mon
1 stop
United Airlines
30h 30m
DUB - DEN
7/28
Wed
1 stop
United Airlines
16h 10m
DEN - DUB
8/5
Thu
1 stop
United Airlines
12h 08m
DUB - DEN
7/4
Sun
1 stop
United Airlines
10h 33m
DEN - DUB
8/5
Thu
1 stop
United Airlines
30h 30m
DUB - DEN
8/21
Sat
2 stops
Multiple Airlines
22h 45m
DEN - DUB
8/28
Sat
1 stop
Multiple Airlines
16h 04m
DUB - DEN
7/29
Thu
2 stops
Multiple Airlines
23h 04m
DEN - DUB
8/6
Fri
1 stop
Multiple Airlines
16h 38m
DUB - DEN
8/28
Sat
1 stop
American Airlines
14h 30m
DEN - DUB
9/4
Sat
1 stop
American Airlines
14h 58m
DUB - DEN
8/14
Sat
1 stop
American Airlines
12h 24m
DEN - DUB
8/31
Tue
1 stop
American Airlines
17h 10m
DUB - DEN
7/5
Mon
1 stop
American Airlines
13h 57m
DEN - DUB
8/4
Wed
1 stop
American Airlines
12h 51m
DUB - DEN
7/27
Tue
2 stops
Multiple Airlines
27h 50m
DEN - DUB
8/6
Fri
2 stops
Multiple Airlines
35h 37m
DUB - DEN
8/27
Fri
1 stop
Delta
13h 20m
DEN - ORK
9/4
Sat
2 stops
Delta
23h 13m
ORK - DEN
8/25
Wed
1 stop
Delta
34h 05m
DEN - ORK
9/4
Sat
2 stops
Delta
18h 29m
ORK - DEN
8/26
Thu
2 stops
Lufthansa
17h 35m
DEN - ORK
9/3
Fri
1 stop
Lufthansa
29h 30m
ORK - DEN
8/25
Wed
2 stops
Air Canada
30h 59m
DEN - ORK
9/4
Sat
2 stops
Air Canada
36h 16m
ORK - DEN
8/27
Fri
1 stop
Aer Lingus
12h 45m
DEN - ORK
9/2
Thu
1 stop
Aer Lingus
27h 50m
ORK - DEN
10/24
Sun
1 stop
British Airways
18h 30m
DEN - SNN
11/6
Sat
1 stop
British Airways
14h 40m
SNN - DEN
8/27
Fri
2 stops
SWISS
41h 35m
DEN - ORK
9/5
Sun
2 stops
SWISS
31h 44m
ORK - DEN
Show more results

Recent one-way flight deals

7/24
Sat
2 stops
Iberia
28h 51m
DEN - DUB
7/17
Sat
2 stops
Multiple Airlines
14h 49m
DEN - DUB
9/28
Tue
2 stops
Multiple Airlines
22h 35m
DEN - DUB
7/14
Wed
2 stops
Multiple Airlines
25h 25m
DEN - DUB
6/25
Fri
3 stops
Multiple Airlines
42h 05m
DEN - DUB
7/24
Sat
1 stop
Iberia
14h 59m
DEN - DUB
7/20
Tue
3 stops
Multiple Airlines
59h 30m
DEN - DUB
6/25
Fri
3 stops
Multiple Airlines
42h 47m
DEN - DUB
7/20
Tue
2 stops
Multiple Airlines
42h 05m
DEN - DUB
7/19
Mon
2 stops
Multiple Airlines
25h 55m
DEN - DUB
7/16
Fri
3 stops
Multiple Airlines
51h 43m
DEN - DUB
7/14
Wed
3 stops
Multiple Airlines
47h 15m
DEN - DUB
9/11
Sat
3 stops
Multiple Airlines
41h 46m
DEN - DUB
6/26
Sat
3 stops
Multiple Airlines
38h 40m
DEN - DUB
6/26
Sat
3 stops
Multiple Airlines
36h 35m
DEN - DUB
7/18
Sun
2 stops
Multiple Airlines
26h 15m
DEN - DUB
9/10
Fri
3 stops
Multiple Airlines
25h 13m
DEN - DUB
7/17
Sat
3 stops
Multiple Airlines
33h 15m
DEN - DUB
7/24
Sat
3 stops
Multiple Airlines
41h 33m
DEN - DUB
8/9
Mon
2 stops
Air Canada
28h 00m
DEN - SNN
Show more results
-
1
  • Round-trip
  • One-way
  • Multi-city
  • Trip Builder
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First