€249 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 10/1. 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

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Best Ireland Flight Deals from Denver

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop€336
Cork
Cork1 stop€401
Shannon
Shannon1 stop€399
Donegal
Donegal2 stops€972
Dublin
Dublin1 stop€336
Cork
Cork1 stop€401
Shannon
Shannon1 stop€399
Donegal
Donegal2 stops€972

Cheap Flights from Denver to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return 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 return flight deals from Denver to Ireland

Thu, 26 Feb - Mon, 2 Mar
Icelandair Logo
15:40 - 10:15
DEN
-
DUB
11h 35m1 stop
Icelandair Logo
11:30 - 18:05
DUB
-
DEN
13h 35m1 stop
€336Icelandair
Mon, 23 Mar - Thu, 2 Apr
Icelandair Logo
16:40 - 10:15
DEN
-
DUB
11h 35m1 stop
Icelandair Logo
14:15 - 19:00
DUB
-
DEN
11h 45m1 stop
€338Icelandair
Wed, 21 Jan - Sun, 25 Jan
Icelandair Logo
15:40 - 10:15
DEN
-
DUB
11h 35m1 stop
Icelandair Logo
11:30 - 18:05
DUB
-
DEN
13h 35m1 stop
€339Icelandair
Tue, 10 Feb - Tue, 17 Feb
Lufthansa Logo
11:20 - 08:10
DEN
-
DUB
13h 50m1 stop
Lufthansa Logo
05:00 - 16:00
DUB
-
DEN
18h 00m1 stop
€359Lufthansa
Tue, 27 Jan - Tue, 3 Feb
Lufthansa Logo
11:20 - 08:10
DEN
-
DUB
13h 50m1 stop
Lufthansa Logo
05:00 - 13:40
DUB
-
DEN
15h 40m1 stop
€362Lufthansa
Tue, 27 Jan - Tue, 3 Feb
American Airlines Logo
17:25 - 16:45
DEN
-
SNN
16h 20m1 stop
American Airlines Logo
07:50 - 15:30
SNN
-
DEN
14h 40m1 stop
€399American Airlines
Sun, 1 Mar - Tue, 31 Mar
American Airlines Logo
17:25 - 21:00
DEN
-
ORK
20h 35m1 stop
American Airlines Logo
07:20 - 16:35
ORK
-
DEN
16h 15m1 stop
€401American Airlines
Sun, 8 Mar - Fri, 20 Mar
Air Canada Logo
08:05 - 23:25
DEN
-
ORK
33h 20m2 stops
Air Canada Logo
11:55 - 12:37
ORK
-
DEN
30h 42m2 stops
€572Air Canada
Sat, 21 Mar - Sat, 28 Mar
Air Canada Logo
20:59 - 15:25
DEN
-
ORK
36h 26m2 stops
Air Canada Logo
07:40 - 16:35
ORK
-
DEN
38h 55m2 stops
€620Air Canada
Sun, 8 Feb - Wed, 11 Feb
British Airways Logo
17:25 - 14:00
DEN
-
CFN
37h 35m2 stops
British Airways Logo
14:30 - 15:30
CFN
-
DEN
32h 00m2 stops
€972British Airways
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 €466 return. 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 €466.

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

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of €466, 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 November, when tickets cost €412 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €834 and €660 respectively.

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 a flight from Denver to Ireland, you should book around 3 weeks before departure, which saves you about 17% 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€249
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (7% more expensive on average)
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 travellers 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 return 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 retur flights cost €577 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 €672.

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 airline flying 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.
7.2
Aer LingusOverall score based on 1394 reviews
7.0Entertainment
6.6Food
7.1Comfort
8.0Crew
7.4Boarding
Airline reviews

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

10.0 ExcellentAnonymous, Dec 2025
BCN - DUB
Read more Aer Lingus reviews

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

It all went very well, except for the ramp coordination upon landing in Boston. That, however, was resolved in fairly short order.

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

It was poor overall. They cancelled our flight and changed it without notifying us. So we incurred extra costs by having to book a hotel for our layover. They say it's Kayak/Underpricer's responsibility to reimburse us. But Kayak/Underpricer have said it's Aer Lingus' responsibility because they are the ones with our 'booking information.' I find this situation confusing and unacceptable.

My experience with Aer Lingus was not too good. First, because of the last minute delayed flight from Amsterdam to Dublin we almost missed our flight from Dublin to Philadelphia. Secondly, the flight from Dublin to Philadelphia had very uncomfortable seats especially it was a very long flight. My buttocks were constantly in pain for sitting on these seats for this long. Lastly, the service in the plane was also slow. I asked for a second cup of water and the hostess told me he'll be right back with that where it took him over an hour to come back with water. It was warm in the plane and I was very thirsty. Overall this airline needs much improvement in their services.

Staff was generally friendly and helpful. Attendants collecting trash were somewhat inattentive though.

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

Information on your arrival and departure airports