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$382+ Cheap flights from Ireland to Denver (DEN)

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
May 16 — May 231
Sat 5/16
Sat 5/23
1 adult, Economy
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Cheap flight deals from Ireland to Denver

Cheapest flights from Ireland to Denver
Explore the most affordable flight options available from Ireland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2026.

This Finnair deal was found by Cheapflights users on 4/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/159:30 am
DUB
-
DEN
1 stop21h 36m
Multiple Airlines
Mon 6/296:40 pm
DEN
-
DUB
1 stop17h 00m
Multiple Airlines
Deal found 4/14$528
This Finnair deal was found by Cheapflights users on 4/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:30 am
DUB
-
DEN
1 stop21h 36m
Multiple Airlines
Mon 6/226:40 pm
DEN
-
DUB
1 stop17h 00m
Multiple Airlines
Deal found 4/15$531
This British Airways deal was found by Cheapflights users on 4/16. 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 5/208:30 pm
DUB
-
DEN
1 stop26h 50m
British Airways
Fri 5/292:21 pm
DEN
-
DUB
2 stops20h 29m
British Airways
Deal found 4/16$534
This lastminute.com deal was found by Cheapflights users on 4/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:25 pm
DUB
-
DEN
Nonstop9h 50m
Aer Lingus
Mon 6/18:00 pm
DEN
-
DUB
Nonstop8h 45m
Aer Lingus
Deal found 4/14$536
This Finnair deal was found by Cheapflights users on 4/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:30 am
DUB
-
DEN
1 stop17h 25m
Finnair
Sun 5/310:28 am
DEN
-
DUB
1 stop16h 17m
Finnair
Deal found 4/12$537
This TravelUp deal was found by Cheapflights users on 4/14. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:45 pm
DUB
-
DEN
1 stop13h 32m
Multiple Airlines
Mon 6/15:35 pm
DEN
-
DUB
1 stop11h 15m
Multiple Airlines
Deal found 4/14$538
This British Airways deal was found by Cheapflights users on 4/16. 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 5/208:35 am
DUB
-
DEN
2 stops22h 14m
British Airways
Mon 5/2512:27 pm
DEN
-
DUB
2 stops19h 03m
British Airways
Deal found 4/16$539
This Finnair deal was found by Cheapflights users on 4/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:30 am
DUB
-
DEN
1 stop20h 15m
Finnair
Wed 5/272:21 pm
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 4/16$540
This Finnair deal was found by Cheapflights users on 4/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/199:40 am
DUB
-
DEN
2 stops20h 05m
Finnair
Mon 5/252:21 pm
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 4/15$541
This Finnair deal was found by Cheapflights users on 4/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/199:40 am
DUB
-
DEN
2 stops20h 05m
Finnair
Tue 5/262:21 pm
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 4/16$543
This Finnair deal was found by Cheapflights users on 4/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:30 am
DUB
-
DEN
1 stop17h 25m
Finnair
Fri 5/810:28 am
DEN
-
DUB
1 stop16h 17m
Finnair
Deal found 4/12$544
This Air France deal was found by Cheapflights users on 4/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:15 am
ORK
-
DEN
2 stops18h 55m
Multiple Airlines
Wed 5/62:39 pm
DEN
-
ORK
2 stops17h 01m
Multiple Airlines
Deal found 4/15$644

Find flight deals from Ireland to Denver

Keep the following information in mind while searching for Ireland to Denver flight deals. Data was last updated April 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$528
(Finnair)

One-way from

$382
(Cheapflightsfares)

Popular in

August

Cheapest in

September

Average price

$717

Good one-way deal

$736 or less
Provider with most accurate pricing for Dublin-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Denver Intl flights.
Search Deals
From Ireland to Denver Intl
Search Deals
One-way flight from Ireland to Denver Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Ireland to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to Denver 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 April 16, 2026.
Use the filters below to find and compare flights from Ireland to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 5/1

9:30 am-7:55 pm

1 stop17h 25m

Denver Intl

Tue 5/12

10:28 am-9:45 am

1 stop16h 17m

$537

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 5/7

9:30 am-5:39 pm

1 stop15h 09m

Denver Intl

Mon 5/11

12:24 pm-11:50 am

1 stop16h 26m

$553

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 5/29

5:55 am-3:36 pm

2 stops16h 41m

Denver Intl

Thu 6/4

12:55 am-9:15 am

1 stop25h 20m

$564

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 5/1

8:55 am-9:27 pm

2 stops19h 32m

Denver Intl

Fri 5/15

7:55 am-7:55 am

2 stops17h 00m

$568

CorkDenver

ORK - DEN

ORKDEN

Cork

Wed 5/6

4:10 pm-4:20 pm

1 stop31h 10m

Denver Intl

Sat 5/23

6:30 pm-11:50 pm

1 stop22h 20m

$687

ShannonDenver

SNN - DEN

SNNDEN

Shannon

Thu 4/30

7:30 am-4:20 pm

1 stop15h 50m

Denver Intl

Mon 5/4

5:44 pm-4:10 pm

2 stops15h 26m

$687

CorkDenver

ORK - DEN

ORKDEN

Cork

Tue 5/5

8:30 pm-4:20 pm

1 stop26h 50m

Denver Intl

Sun 5/24

6:30 pm-11:50 pm

1 stop22h 20m

$691

CorkDenver

ORK - DEN

ORKDEN

Cork

Fri 5/8

8:30 pm-4:18 pm

2 stops26h 48m

Denver Intl

Sat 5/23

2:21 pm-11:50 pm

2 stops26h 29m

$692

ShannonDenver

SNN - DEN

SNNDEN

Shannon

Wed 5/6

7:30 am-9:59 pm

2 stops21h 29m

Denver Intl

Sat 5/23

12:16 pm-11:20 am

2 stops16h 04m

$692

ShannonDenver

SNN - DEN

SNNDEN

Shannon

Sat 5/9

7:30 am-11:45 pm

2 stops23h 15m

Denver Intl

Sat 5/23

12:16 pm-11:20 am

2 stops16h 04m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/12

Showing 1-10 of 51 resultsSorted by cheapest first
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Best time to book a flight from Ireland to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Ireland 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 Ireland to Denver

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

Currently, May is the cheapest month in which you can book a flight from Ireland to Denver (average of $386). Flying from Ireland to Denver in July is currently the most expensive (average of $695). 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.

How often are flights from Ireland to Denver delayed?

About 17% of weekly flights between Ireland and Denver have experienced delays in the past year, with the average delay time being 81 minutes.

What is the most punctual flight time for Ireland to Denver flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Denver flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 16% of flights being delayed.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated April 16, 2026.
Get a feel of what it's like to fly with United Airlines and Aer Lingus from Ireland to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,601 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,601 reviews
United Airlines
7.4
Good
9,601 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Aer Lingus
7.3
Good
1,512 reviews
United Airlines
7.4
Good
9,601 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Denver. 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 into for flights to Denver from Ireland?

    Located just 18.5 mi from the city center, Denver Intl (DEN) is the airport most travelers will use when flying to Denver from Ireland.

  • How popular is this Ireland to Denver flight route?

    Flights from Ireland to Denver Intl have been viewed 5 times in the past calendar month.

  • How long is the flight from Ireland to Denver?

    There are many flights that can get you from Ireland to Denver in 15h 09m. Fly via American Airlines, Delta, or British Airways to get the fastest option. There are 4378 mi between Ireland and Denver. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $446. Users have also found prices from $503 and $577 on British Airways and Aer Lingus, respectively.

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

    The most popular route from Ireland to Denver is Dublin - Denver Intl. You may also consider Cork - Denver Intl or Shannon - Denver Intl.

  • What are the cheapest flights from Ireland to Denver?

    The cheapest flight price from Ireland to Denver is $641. On average you can expect to pay $879. The most popular route, (Dublin - Denver Intl), can usually be booked for $528.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ireland to Denver 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 Ireland to Denver?

    Currently, May is the cheapest month in which you can book a flight from Ireland to Denver (average of $386). Flying from Ireland to Denver in July is currently the most expensive (average of $695). 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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ireland to Denver

Discover the top 2 airlines that operate flights from Ireland to Denver. 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 April 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$433Average$779FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$625Average$879FlexibilityNo cancel feeOn-time69%

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