$290 Find Cheap Flights from Denver to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Ireland departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy

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Best Ireland Flight Deals from Denver

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$334
Shannon
Shannon1 stop$477
Cork
Cork2 stops$515
Dublin
Dublin1 stop$334
Shannon
Shannon1 stop$477
Cork
Cork2 stops$515

Cheap Flights from Denver to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Ireland

Sat, Aug 9 - Thu, Aug 21
United Airlines Logo
7:17 pm - 7:10 amDEN-DUB
28h 53m1 stop
United Airlines Logo
9:20 am - 10:21 amDUB-DEN
32h 01m1 stop
$334United Airlines
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Sat, Aug 9 - Thu, Aug 21
Air Canada Logo
11:59 pm - 7:45 amDEN-DUB
24h 46m2 stops
Air Canada Logo
9:20 am - 6:20 pmDUB-DEN
16h 00m1 stop
$341Air Canada
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Sun, Nov 2 - Mon, Nov 10
Icelandair Logo
3:40 pm - 10:15 amDEN-DUB
11h 35m1 stop
Icelandair Logo
11:30 am - 6:05 pmDUB-DEN
13h 35m1 stop
$357Icelandair
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Wed, Nov 5 - Sat, Nov 22
Icelandair Logo
3:40 pm - 10:15 amDEN-DUB
11h 35m1 stop
Icelandair Logo
11:30 am - 6:05 pmDUB-DEN
13h 35m1 stop
$359Icelandair
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Sun, Nov 9 - Mon, Nov 17
American Airlines Logo
5:25 pm - 4:45 pmDEN-SNN
16h 20m1 stop
American Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$485American Airlines
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Sun, Nov 9 - Mon, Nov 17
American Airlines Logo
4:59 pm - 4:45 pmDEN-SNN
16h 46m2 stops
American Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$490American Airlines
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Thu, Aug 14 - Thu, Aug 21
British Airways Logo
4:45 pm - 8:35 pmDEN-SNN
20h 50m2 stops
British Airways Logo
9:15 pm - 4:25 pmSNN-DEN
26h 10m1 stop
$671British Airways
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Thu, Aug 14 - Thu, Aug 21
British Airways Logo
6:37 pm - 8:35 pmDEN-SNN
18h 58m2 stops
British Airways Logo
9:15 pm - 3:44 pmSNN-DEN
25h 29m2 stops
$681British Airways
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Thu, Aug 28 - Thu, Sep 4
Aer Lingus Logo
7:55 pm - 2:00 pmDEN-CFN
11h 05m1 stop
Aer Lingus Logo
2:30 pm - 5:59 pmCFN-DEN
34h 29m1 stop
$844Aer Lingus
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Thu, Aug 28 - Thu, Sep 4
Aer Lingus Logo
2:05 pm - 2:00 pmDEN-CFN
16h 55m2 stops
Aer Lingus Logo
7:55 am - 5:59 pmCFN-DEN
17h 04m1 stop
$914Aer Lingus
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to Ireland flights

Get data-powered insights and trends into flights from Denver to Ireland to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Denver to Ireland flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Denver to Ireland.

The cheapest ticket to Ireland from Denver found in the last 72 hours was to Dublin, at $361 round-trip. The most popular route is from Denver (DEN) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $361.

Can I save money by flying with a layover from Denver to Ireland?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $872, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Denver to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Ireland is February, when tickets cost $465 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $938 and $790 respectively.

What’s the cheapest day of the week to fly from Denver to Ireland?

The average price of all round-trip flights from Denver to Ireland clicked on KAYAK for each day over the last 12 months.

When flying from Denver to Ireland, you should consider leaving on a Wednesday and avoid Tuesdays if you are looking for the best rates. For your return to Denver, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

How far in advance should I book a flight from Denver to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Ireland, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$290
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Denver to Dublin

FAQs - booking Ireland flights

  • Is it necessary to have a visa to fly from Denver to Ireland?

    As a U.S. citizen traveling to Ireland, you are not required to get a tourist visa before leaving the United States. However, you may be asked to show proof of an exit date out of Ireland. Make sure you have a valid passport with you as well.

  • Are there direct flights from Denver to Ireland?

    Currently, there aren’t any available direct flights making the route from Denver to Ireland. Nonetheless, there are flights with just one layover in between. Most of these routes are operated by United Airlines and make a stop in Newark Liberty International Airport (EWR) in New York, before crossing the Atlantic Ocean.

  • What is the best way to get to the Ring of Kerry?

    The Ring of Kerry is a scenic route drive around the Iveragh Peninsula in southwest Ireland. The best way to enjoy the Ring of Kerry is by car. Travelers coming from Denver can fly into Shannon Airport (SNN) where they can rent a vehicle from one of the available agencies. The Ring of Kerry is just a few hours away through the striking Irish countryside.

  • Is there public transportation to get to Limerick from the airport?

    The airport serving the area of Limerick in southwest Ireland is the second largest hub in the country—Shannon Airport (SNN). The airport has a couple of national bus services that operate outside its doors. This is most likely the cheapest option to get around. The 343 route of Bus Éireann arrives in Limerick in about half an hour. Passengers can expect to pay more or less €10 ($11).

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

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver 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?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Denver to Ireland with an airline and back with another airline.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Denver to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally in the evening, when round-trip flights cost $411 on average. Morning departures are around 59% more expensive than evening flights, on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is $872.

Top tips for finding cheap flights to Ireland

  • When you’re booking flights from Denver to Ireland, the best airport to fly into with the most route options is Dublin Airport (DUB). This is the country’s main hub, and it is located near some top attractions like the Dublin Castle and the Guinness Storehouse. It is also a short distance from the Dublin city center.
  • As you’re prepping for your trip from Denver to Ireland, remember to have USD to exchange into the local Euro (EUR) currency. The main airports, such as Dublin Airport (DUB) and Shannon Airport (SNN), have currency exchange kiosks at their arrival terminals.
  • Denver International Airport (DEN) offers a few services ideal for passengers that get stressed before long flights like the one from Denver to Ireland. Before boarding their flight, passengers can get a massage or go to the spa to relax.
  • Child car seats are mandatory for children under 150 cm (4ft 11in) or 36kg (79lb). This is important to know if you’re planning on traveling with infants and renting a vehicle in Ireland. You can check with your car rental company to find out if they can provide child seats so you don’t have to bring your own.
  • If you’re traveling with a pet or service animal from Denver to Ireland, Denver International Airport (DEN) has various pet relief spots. These are available for your four-legged friends to do their business before flying.

Reviews of the top 5 airlines serving from Denver to Ireland

 
Need help choosing which airline to fly with from Denver to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8863 reviews
6.6Food
7.3Comfort
7.0Entertainment
8.1Crew
7.7Boarding
Airline reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

10.0 ExcellentAnonymous, Jun 2025DEN - BOS
Read more United Airlines reviews

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

I didn't like that my paid for seat was changed 2 hours before my flight.

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

When I booked the flight, I wasn't aware that this was a "no frills" flight. No wifi, no reclining seat, no complimentary soft drinks.

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

The Nice airport was a horrible boarding experience. I have never experienced the kind of compressed mob (in the B12-B17 gate area) of people all unclear what was happening and no airport staff to assist. There was no signage and 1000’s of people waiting for any info for 2 hours.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

Excellent service, full flight but all went well ; slightly delayed start at Faro but arrived in Cork on time.

The ease of boarding was good. I wish they had something to eat on the plane.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

Still one of my favorite airlines, but the entertainment options were a bit lacking. It didn't help that my screen didn't work on one of the legs of the trip.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very uncomfortable.

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

The international flight from PHL to Lisbon was one of the worst I’ve experienced, ever. What was really disappointing was the entire experience of comfort and service in the coach cabin after takeoff. The food was inedible and the wine served with dinner was such low quality - it tasted of petrol. I couldn’t eat more than a bite or two of the chicken entree, being worried it would make me ill. The service took so long to reach the entire coach cabin, I ended up having the lights turned off on me as though I had to rush though dinner (though as I mentioned, it wasn’t as if I ate much - only the salad). Most of the attendants seemed generally annoyed and were not friendly or polite. While there was some turbulence, it wasn’t too uncomfortable and I know that is just a chance. The temperature of the cabin was so warm, even a friend a row or two up and on the other side of the plane felt like this. To top it all off, the seat was so uncomfortable and flattened/overused, I had back pains for DAYS afterward.

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

The airline was efficient and accommodating to work with though there was a delay. Appreciate the service and smooth experience!

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The entertainment selection was ok, but overall not bad! The crew was great.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

bad, made it to connecting flight and they didnt let me board

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