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Ireland

$232+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Feb 1 — Feb 81
Sun 2/1
Sun 2/8
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 January 2, 2026.

This American Airlines deal was found by Cheapflights users on 12/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:25 pmDEN - ORK
1 stop20h 35mAmerican Airlines
Tue 3/317:20 amORK - DEN
1 stop16h 10mAmerican Airlines
Deal found 12/30$472
This American Airlines deal was found by Cheapflights users on 1/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/212:34 pmDEN - ORK
2 stops15h 36mAmerican Airlines
Tue 2/177:40 amORK - DEN
2 stops20h 22mAmerican Airlines
Deal found 1/1$478
This Delta deal was found by Cheapflights users on 12/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:10 amDEN - ORK
2 stops21h 10mDelta
Thu 4/3010:50 amORK - DEN
2 stops19h 42mDelta
Deal found 12/31$494
This FlightHub deal was found by Cheapflights users on 12/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1211:15 amDEN - ORK
2 stops22h 15mLufthansa
Thu 4/305:05 pmORK - DEN
1 stop27h 30mLufthansa
Deal found 12/31$499
This Mytrip deal was found by Cheapflights users on 12/30. 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.
Wed 12/3111:15 amDEN - SNN
2 stops22h 30mAir Canada
Wed 1/147:50 amSNN - DEN
2 stops33h 33mAir Canada
Deal found 12/30$666
This Ovago deal was found by Cheapflights users on 1/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/155:25 pmDEN - CFN
2 stops19h 35mBritish Airways
Sun 2/221:00 pmCFN - DEN
2 stops33h 30mBritish Airways
Deal found 1/1$818
This Trip.com deal was found by Cheapflights users on 12/30. 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.
Wed 12/315:25 pmDEN - SNN
1 stop19h 00mBritish Airways
Wed 1/148:05 pmSNN - DEN
1 stop26h 25mBritish Airways
Deal found 12/30$844
This American Airlines deal was found by Cheapflights users on 12/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:01 pmDEN - SNN
2 stops16h 29mMultiple Airlines
Wed 1/147:50 amSNN - DEN
1 stop14h 40mMultiple Airlines
Deal found 12/30$849
This British Airways deal was found by Cheapflights users on 12/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:25 pmDEN - CFN
2 stops19h 35mBritish Airways
Sun 2/221:00 pmCFN - DEN
2 stops57h 30mBritish Airways
Deal found 12/31$898
This Mytrip deal was found by Cheapflights users on 1/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/153:40 pmDEN - CFN
3 stops21h 20mMultiple Airlines
Sun 2/2210:00 amCFN - DEN
2 stops36h 30mMultiple Airlines
Deal found 1/1$962
This Kiwi.com deal was found by Cheapflights users on 12/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:00 pmDEN - DUB
1 stop28h 10mMultiple Airlines
Sun 1/46:20 amDUB - DEN
2 stops33h 04mMultiple Airlines
Deal found 12/31$1,886
This Delta deal was found by Cheapflights users on 12/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:27 pmDEN - DUB
2 stops30h 18mDelta
Sun 1/48:50 amDUB - DEN
2 stops22h 17mDelta
Deal found 12/31$1,981

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 January 2, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$424
(Kiwi.com)

One-way from

$232
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$506

Good round-trip deal

$646 or less

Good one-way deal

$439 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 ($183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 2, 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 3/31

5:59 pm-7:20 am

1 stop30h 21m

Dublin

Wed 4/8

9:50 am-12:40 pm

1 stop33h 50m

$464

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/30

11:59 pm-10:40 am

1 stop27h 41m

Dublin

Wed 4/8

9:50 am-10:15 am

1 stop31h 25m

$464

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/1

6:00 am-7:20 am

1 stop18h 20m

Dublin

Fri 4/10

9:50 am-4:35 pm

1 stop13h 45m

$476

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 3/1

2:28 pm-3:25 pm

2 stops17h 57m

Cork

Tue 3/31

7:20 am-4:30 pm

1 stop16h 10m

$477

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/1

1:30 pm-10:40 am

1 stop14h 10m

Dublin

Wed 4/29

9:50 am-7:55 pm

2 stops17h 05m

$478

DenverCork

DEN - ORK

DENORK

Denver Intl

Mon 2/2

12:34 pm-11:10 am

2 stops15h 36m

Cork

Tue 2/17

7:40 am-9:02 pm

2 stops20h 22m

$478

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Fri 1/23

5:25 pm-3:45 pm

1 stop15h 20m

Shannon

Thu 1/29

7:50 am-3:30 pm

1 stop14h 40m

$490

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 3/31

6:40 pm-4:10 pm

1 stop14h 30m

Shannon

Tue 4/7

7:40 am-4:30 pm

1 stop15h 50m

$491

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/1

5:06 pm-4:40 pm

2 stops16h 34m

Dublin

Wed 4/29

5:55 am-7:45 pm

2 stops20h 50m

$494

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 4/12

6:10 am-10:20 am

2 stops21h 10m

Cork

Thu 4/30

10:50 am-11:32 pm

2 stops19h 42m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 49 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 $677). 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 January 2, 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
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,132 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,074 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Aer Lingus
7.2
Good
1,418 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Air Canada
7.1
Good
10,573 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Icelandair
7.1
Good
593 reviews
United Airlines
7.4
Good
9,132 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 5 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, American Airlines, and Delta fly from Denver to Ireland in about 16h 34m. The time it takes to get you to your destination can typically vary by up to 13h 47m. 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 $273 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 $355. While the most popular route (Denver Intl - Dublin) can be booked for $424 on average, our data indicates $669 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 $677). 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

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Alternative routes for Denver to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Heathrow flights
Denver to Leonardo da Vinci/Fiumicino flights
Denver to Dublin flights
Denver to Charles de Gaulle flights
Denver to Frankfurt flights
Denver to Gatwick flights
Denver to Barcelona-El Prat flights
Denver to Orly flights
Denver to Athens flights
Denver to Istanbul flights
Denver to Munich flights
Denver to London City flights
Denver to Madrid flights
Denver to Lisbon flights
Denver to Stansted flights
Denver to Malpensa flights
Denver to Vicenza flights
Denver to Keflavik Intl flights
Denver to Linate flights
Denver to Amsterdam flights
Denver to Zurich flights
Denver to Sabiha Gokcen flights
Denver to Geneva flights
Denver to Edinburgh flights
Denver to Oslo Gardermoen flights
Denver to Florence flights
Denver to Berlin flights
Denver to Bruxelles-National flights
Denver to Glasgow Intl flights
Denver to Copenhagen flights
Denver to Naples flights
Denver to Prague flights
Denver to Vienna flights
Denver to Budapest flights
Denver to Luton flights
Denver to Porto flights
Denver to Shannon flights
Denver to Arlanda flights
Denver to Nice flights
Denver to Frederic Chopin flights
Denver to Dubrovnik flights
Denver to Manchester flights
Denver to Bologna flights
Denver to Basel flights
Denver to Málaga flights
Denver to Catania flights
Denver to Valencia flights

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 January 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$655FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$358Average$513FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$633FlexibilityNo cancel feeOn-time75%
IberiaCheapest$372Average$570FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$384Average$596FlexibilityNo cancel feeOn-time67%
DeltaCheapest$391Average$660FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$395Average$705FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$405Average$554FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$432Average$619FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$458Average$689FlexibilityNo cancel feeOn-time71%

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