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Ireland

$274+ Cheap flights from Denver (DEN) to Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Denver to Ireland

Cheapest flights from Denver to Ireland
Explore the most affordable flight options available from Denver to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:40 pm
DEN
-
DUB
1 stop13h 35m
Icelandair
Thu 5/72:15 pm
DUB
-
DEN
1 stop11h 45m
Icelandair
Deal found 2/1$418
This Trip.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Wed 4/2912:15 pm
DUB
-
DEN
1 stop13h 45m
Icelandair
Deal found 2/2$423
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:40 pm
DEN
-
DUB
1 stop11h 35m
Icelandair
Thu 3/511:30 am
DUB
-
DEN
1 stop13h 35m
Icelandair
Deal found 2/2$428
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:40 pm
DEN
-
DUB
1 stop11h 35m
Icelandair
Mon 3/911:30 am
DUB
-
DEN
1 stop13h 35m
Icelandair
Deal found 2/2$429
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Wed 4/1512:15 pm
DUB
-
DEN
1 stop13h 45m
Icelandair
Deal found 2/1$435
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Fri 5/812:15 pm
DUB
-
DEN
1 stop13h 45m
Icelandair
Deal found 2/2$437
This deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Thu 4/302:15 pm
DUB
-
DEN
1 stop11h 45m
Icelandair
Deal found 1/31$439
This oojo deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Tue 5/52:15 pm
DUB
-
DEN
1 stop11h 45m
Icelandair
Deal found 2/3$442
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Wed 5/612:15 pm
DUB
-
DEN
1 stop13h 45m
Icelandair
Deal found 2/1$443
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:20 pm
DEN
-
DUB
1 stop17h 50m
Lufthansa
Mon 3/305:45 pm
DUB
-
DEN
1 stop27h 35m
Lufthansa
Deal found 2/1$448
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:40 pm
DEN
-
DUB
1 stop11h 25m
Icelandair
Tue 5/122:15 pm
DUB
-
DEN
1 stop11h 45m
Icelandair
Deal found 2/1$451
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/113:35 pm
DEN
-
SNN
1 stop11h 40m
United Airlines
Wed 8/199:30 am
SNN
-
DEN
1 stop14h 20m
United Airlines
Deal found 2/1$489

Find flight deals from Denver to Ireland

Keep the following information in mind while searching for Denver to Ireland flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$418
(oojo)

One-way from

$274
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$495

Good round-trip deal

$614 or less

Good one-way deal

$442 or less
Provider with most accurate pricing for Denver Intl-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Dublin flights.
Search Deals
From Denver Intl to Ireland
Search Deals
One-way flight from Denver Intl to Ireland
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Ireland.
Search Deals
Price to beat on a one-way flight from Denver Intl to Ireland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Denver to Ireland that are best for you.

Fly from

Denver

Fly to

Ireland

Route

Depart

Return

Price

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 4/28

12:34 pm-7:30 am

1 stop11h 56m

Dublin

Wed 5/6

9:50 am-5:00 pm

1 stop14h 10m

$470

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 5/6

6:00 am-9:45 am

1 stop20h 45m

Dublin

Wed 5/13

9:50 am-11:10 pm

1 stop20h 20m

$470

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 5/5

9:25 am-7:45 am

1 stop15h 20m

Dublin

Tue 5/12

9:50 am-8:28 pm

1 stop17h 38m

$474

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/8

10:15 am-7:20 am

1 stop14h 05m

Dublin

Wed 4/15

9:50 am-4:35 pm

1 stop13h 45m

$479

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/23

11:35 am-9:20 am

1 stop15h 45m

Dublin

Tue 3/31

10:00 am-11:39 pm

1 stop20h 39m

$491

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 3/10

7:45 am-7:30 am

2 stops17h 45m

Dublin

Wed 3/25

1:35 pm-12:30 am

2 stops16h 55m

$491

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/2

7:45 am-7:30 am

2 stops16h 45m

Dublin

Tue 3/10

9:30 am-9:55 pm

2 stops18h 25m

$491

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Wed 4/15

8:17 am-10:15 am

2 stops18h 58m

Shannon

Wed 4/22

12:30 pm-10:15 pm

2 stops16h 45m

$494

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/16

11:55 pm-8:45 am

1 stop26h 50m

Dublin

Wed 3/25

9:45 am-10:31 pm

2 stops18h 46m

$495

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 3/21

5:30 pm-6:10 am

1 stop30h 40m

Dublin

Tue 3/31

8:50 am-10:15 pm

1 stop20h 25m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 40 results
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Best time to book a flight from Denver to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Denver to Ireland?

Currently, January is the cheapest month in which you can book a flight from Denver to Ireland (average of $346). Flying from Denver to Ireland in June is currently the most expensive (average of $654). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated February 3, 2026.
Read through reviews of airlines operating flights from Denver to Ireland, such as United Airlines, American Airlines, and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,218 reviews
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,444 reviews
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
606 reviews
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,712 reviews
United Airlines
7.4
Good
9,236 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Denver to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Ireland?

    Denver Intl (DEN) is the airport you will fly out of if you book a flight from Denver to Ireland. It is only a 18.5 mi journey to Denver Intl (DEN) from Denver’s city center.

  • How popular is this Denver to Ireland flight route?

    The Denver Intl to Ireland flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to Ireland?

    Airlines like United Airlines, Lufthansa, and British Airways fly from Denver to Ireland in about 11h 56m. The time it takes to get you to your destination can typically vary by up to 7h 39m. The distance from Denver to Ireland is about 4378 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Denver to Ireland one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $215. Users have also found prices from $234 and $288 on WestJet and Icelandair, respectively.

  • What are the most popular routes from Denver to Ireland?

    The most popular flight routes from Denver to Ireland are Denver Intl - Dublin, Denver Intl - Shannon and Denver Intl - Cork.

  • What are the cheapest flights from Denver to Ireland?

    Looking at all options, your cheapest flight can be booked for $317. While the most popular route (Denver Intl - Dublin) can be booked for $418 on average, our data indicates $618 when flying from Denver to Ireland.

  • Can I find deals for flights from Denver to Ireland that include hotel bookings?

    Yes. In addition to deals on Denver to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Ireland.

  • Can I find deals for business class flights from Denver to Ireland?

    Yes. Cheapflights offers flight deals from Denver to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Ireland?

    Currently, January is the cheapest month in which you can book a flight from Denver to Ireland (average of $346). Flying from Denver to Ireland in June is currently the most expensive (average of $654). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Denver to Ireland

Discover the top 10 airlines that operate flights from Denver to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$655FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$356Average$474FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$663FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$383Average$579FlexibilityNo cancel feeOn-time67%
IberiaCheapest$387Average$568FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$387Average$700FlexibilityNo cancel feeOn-time69%
DeltaCheapest$391Average$660FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$402Average$585FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$405Average$663FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$432Average$622FlexibilityNo cancel feeOn-time76%

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