$235 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 3/24. 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.
1 adult
1 adult, Economy, 0 bags

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

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin2 stops$406
Shannon
Shannon2 stops$422
Cork
Cork1 stop$421
Dublin
Dublin2 stops$406
Shannon
Shannon2 stops$422
Cork
Cork1 stop$421

Book Cheap Denver to Ireland Plane Tickets

 
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

Mon, Apr 13 - Tue, Apr 21
Air Canada Logo
7:16 pm - 8:15 am
DEN
-
DUB
29h 59m
2 stops
Air Canada Logo
9:50 am - 6:07 pm
DUB
-
DEN
39h 17m
2 stops
$406Air Canada
Thu, Feb 26 - Thu, Mar 5
Icelandair Logo
3:40 pm - 10:15 am
DEN
-
DUB
11h 35m
1 stop
Icelandair Logo
11:30 am - 6:05 pm
DUB
-
DEN
13h 35m
1 stop
$407Icelandair
Sun, Apr 26 - Thu, May 7
United Airlines Logo
8:52 pm - 9:45 am
DEN
-
DUB
29h 53m
1 stop
United Airlines Logo
9:50 am - 10:33 am
DUB
-
DEN
31h 43m
1 stop
$414United Airlines
Sun, May 3 - Wed, May 13
United Airlines Logo
6:00 am - 10:40 am
DEN
-
DUB
21h 40m
1 stop
United Airlines Logo
9:50 am - 5:00 pm
DUB
-
DEN
14h 10m
1 stop
$417United Airlines
Sun, May 3 - Wed, May 13
Aer Lingus Logo
8:00 pm - 11:45 am
DEN
-
DUB
8h 45mnonstop
Aer Lingus Logo
3:25 pm - 6:15 pm
DUB
-
DEN
9h 50mnonstop
$419Aer Lingus
Wed, Feb 25 - Wed, Mar 4
British Airways Logo
5:25 pm - 3:40 pm
DEN
-
DUB
15h 15m
1 stop
British Airways Logo
8:50 am - 3:30 pm
DUB
-
DEN
13h 40m
1 stop
$421British Airways
Sun, Mar 1 - Tue, Mar 31
British Airways Logo
5:25 pm - 9:00 pm
DEN
-
ORK
20h 35m
1 stop
British Airways Logo
4:15 pm - 4:30 pm
ORK
-
DEN
31h 15m
1 stop
$421British Airways
Wed, Apr 1 - Wed, Apr 29
American Airlines Logo
6:40 pm - 5:15 pm
DEN
-
DUB
15h 35m
1 stop
American Airlines Logo
7:30 am - 4:30 pm
DUB
-
DEN
16h 00m
1 stop
$422American Airlines
Sun, Mar 1 - Tue, Mar 31
American Airlines Logo
5:25 pm - 9:00 pm
DEN
-
ORK
20h 35m
1 stop
American Airlines Logo
7:20 am - 9:36 pm
ORK
-
DEN
21h 16m
2 stops
$432American Airlines
Mon, May 18 - Wed, May 27
Aer Lingus Logo
8:00 pm - 8:00 pm
DEN
-
CFN
17h 00m
1 stop
Aer Lingus Logo
8:00 am - 6:15 pm
CFN
-
DEN
17h 15m
1 stop
$1,113Aer Lingus
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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Denver found in the last 72 hours was to Dublin, at $514 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 $514.

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 $633, 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 January, when tickets cost $484 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $983 and $762 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 Monday 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 3 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$235
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 19% 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 $548 on average. Morning departures are around 100% cheaper 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 $838.

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 9198 reviews
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

2.0 MediocreSid, Dec 2025
DEN - BZN
Read more United Airlines reviews

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Flight was good but there are way to many announcements for credit cards etc.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

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 😁

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Could we please end the loud announcements about credit card offers on your flights? We are trying to sleep, work, watch videos, etc. and if we need a credit card, we will ask for one. Flying is already not what it used to be.

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

Enough space,crew was helpful,food was good.The gates are way far especially for travelers with health issues

One of the best flight experience I have had in along time. Would fly with them again.

Like getting a bus. No great luxury but will get you there

Got us to destination alive, albeit a bit late. Luggage was left behind. No live tracking app available (available on some other airlines). Supposedly going to be delivered in next couple of days.

The trip was mostly nice, till the last moment when they had some issue with opening the flight door. The flight arrived late by 10 minutes, which was ok-ish, but then we got stuck on the plane for 35 minutes at the bridge and that costed our connection flight to LAX which left with 12+ passengers still on our flight. It added 2 days to our trip home, and we had to make lots of rearrangements to deal with the ripple effects. Don't book a 1+ stop trip with a layover time less than 2 hours.

My seat was broken. No sound available and the armrest between my wife and I was broken so it could only fold halfway up. Seats were a big close together so they felt a bit claustrophobic. Boarding was a little frustrating in Dublin as there is not sufficient room to actually queue up. Boarding was also frustrating for people behind me who were unable to use the overhead due to people abusing the privilege and putting more than one item each up there. Staff was friendly and helpful to those people.

The staff was amazing, so friendly and responsive. Check in was tedious as the online service was not available and the desk understaffed. It took a full hour in line to check in. The seats, in economy, where quite spacious until the people in front of us reclined their seats which then meant the seat was touching our knees. The inconsiderate people who were seated in a bulkhead kept their seats reclined for 80% of the flight and then got annoyed when we bumped their seats while shifting positions. It was highly unpleasant..

The connection time between the regional flight (from Newcastle) to an international flight (to The States) was too short. To require as second security scan and customs clearance within an hour and 20 mins is not enough time to make the actual connection. We had a final boarding call the minute we walked out of US customs and had to sprint (with two small children) through 20 gates to make it in time before the door closed. The concept is great in theory to clear customs before leaving Europe, but the timing needs to be adjusted. We travel abroad frequently and won’t be using this route again. Thanks.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

I was not admitted to the flight!!! I need a refund for this

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

Again, we paid $ 328.00 for specific seats are were assigned those seats.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

Everything you need to know for your flight from Denver to Ireland

Information on your arrival and departure airports