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$242+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$391
(CrystalTravel)

One-way from

$242
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$504

Good round-trip deal

$640 or less

Good one-way deal

$453 or less
Provider with most accurate pricing for Denver Intl-Dublin flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Dublin flights.
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From Denver Intl to Ireland
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One-way flight from Denver Intl to Ireland
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Highest demand for flights based on searches. 22% potential increase in price ($186 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Denver Intl to Ireland.
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Price to beat on a one-way flight from Denver Intl to Ireland.
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Find 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 8, 2026.

This CrystalTravel deal was found by Cheapflights users on 1/6. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:40 pmDEN - DUB
1 stop13h 35mIcelandair
Mon 4/202:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/6$380
This oojo deal was found by Cheapflights users on 1/7. 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 pmDEN - DUB
1 stop11h 25mIcelandair
Tue 5/122:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/7$390
This CrystalTravel deal was found by Cheapflights users on 1/7. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Wed 4/1512:15 pmDUB - DEN
1 stop13h 45mIcelandair
Deal found 1/7$391
This FlightHub deal was found by Cheapflights users on 1/6. 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.
Tue 4/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Tue 5/52:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/6$394
This oojo deal was found by Cheapflights users on 1/7. 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.
Thu 5/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Mon 5/112:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/7$397
This CrystalTravel deal was found by Cheapflights users on 1/6. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/193:40 pmDEN - DUB
1 stop11h 35mIcelandair
Sat 1/2411:30 amDUB - DEN
1 stop13h 35mIcelandair
Deal found 1/6$399
This oojo deal was found by Cheapflights users on 1/8. 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 4/64:40 pmDEN - DUB
1 stop13h 35mIcelandair
Mon 4/272:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/8$400
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:17 pmDEN - DUB
2 stops15h 18mBritish Airways
Wed 2/48:50 amDUB - DEN
1 stop13h 40mBritish Airways
Deal found 1/6$402
This KAYAK deal was found by Cheapflights users on 1/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:25 pmDEN - DUB
1 stop13h 40mBritish Airways
Tue 2/108:45 amDUB - DEN
1 stop13h 45mBritish Airways
Deal found 1/8$403
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/95:25 pmDEN - DUB
1 stop14h 55mBritish Airways
Mon 2/238:40 pmDUB - DEN
1 stop25h 50mBritish Airways
Deal found 1/6$404
This KAYAK deal was found by Cheapflights users on 1/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:17 pmDEN - SNN
2 stops18h 28mBritish Airways
Wed 2/48:05 pmSNN - DEN
1 stop26h 25mBritish Airways
Deal found 1/6$405
This KAYAK deal was found by Cheapflights users on 1/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:25 pmDEN - SNN
1 stop16h 20mBritish Airways
Tue 3/107:50 amSNN - DEN
1 stop14h 40mBritish Airways
Deal found 1/7$407

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 8, 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

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Wed 1/28

3:17 pm-4:45 pm

2 stops18h 28m

Shannon

Wed 2/4

8:05 pm-3:30 pm

1 stop26h 25m

$405

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Mon 3/2

5:25 pm-4:45 pm

1 stop16h 20m

Shannon

Tue 3/10

7:50 am-4:30 pm

1 stop14h 40m

$407

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Wed 2/4

5:25 pm-7:25 pm

1 stop19h 00m

Shannon

Wed 2/11

7:50 am-3:30 pm

1 stop14h 40m

$408

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 3/1

5:25 pm-3:25 pm

1 stop15h 00m

Cork

Tue 3/31

7:20 am-4:30 pm

1 stop16h 10m

$408

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 4/25

4:40 pm-11:05 am

1 stop11h 25m

Dublin

Thu 4/30

2:15 pm-7:00 pm

1 stop11h 45m

$409

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 4/12

9:18 am-10:45 am

2 stops18h 27m

Cork

Thu 4/30

7:20 am-4:30 pm

1 stop16h 10m

$410

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 1/18

12:34 pm-10:15 am

2 stops14h 41m

Dublin

Tue 1/27

7:35 am-3:30 pm

1 stop14h 55m

$419

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 3/10

6:25 pm-5:00 pm

1 stop16h 35m

Dublin

Mon 3/16

7:45 pm-4:30 pm

1 stop26h 45m

$420

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/9

6:25 pm-3:40 pm

1 stop15h 15m

Dublin

Mon 3/16

12:05 pm-4:30 pm

1 stop34h 25m

$420

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Sun 1/25

5:25 pm-4:45 pm

1 stop16h 20m

Shannon

Tue 2/10

7:50 am-3:30 pm

1 stop14h 40m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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 $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 8, 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
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,143 reviews
United Airlines
7.4
Good
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
American Airlines
7.2
Good
11,097 reviews
United Airlines
7.4
Good
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Aer Lingus
7.2
Good
1,429 reviews
United Airlines
7.4
Good
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Air Canada
7.1
Good
10,603 reviews
United Airlines
7.4
Good
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Icelandair
7.1
Good
593 reviews
United Airlines
7.4
Good
9,143 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 4 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 British Airways and Icelandair fly from Denver to Ireland in about 11h 25m. The time it takes to get you to your destination can typically vary by up to 7h 03m. 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 $385. While the most popular route (Denver Intl - Dublin) can be booked for $376 on average, our data indicates $637 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
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Denver to Cork flights
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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 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$655FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$358Average$507FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$633FlexibilityNo cancel feeOn-time75%
IberiaCheapest$372Average$570FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$384Average$602FlexibilityNo cancel feeOn-time67%
DeltaCheapest$391Average$659FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$395Average$704FlexibilityNo 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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