Colorado

$354+ Cheap flights from Ireland to Colorado

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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
Jun 13 — Jun 201
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Cheap flight deals from Ireland to Colorado

Cheapest flights from Ireland to Colorado
Explore the most affordable flight options available from Ireland to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 14, 2026.

This lastminute.com deal was found by Cheapflights users on 5/11. 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.
Mon 5/183:25 pm
DUB
-
DEN
Nonstop9h 50m
Aer Lingus
Mon 6/18:00 pm
DEN
-
DUB
Nonstop8h 45m
Aer Lingus
Deal found 5/11$513
This Expedia deal was found by Cheapflights users on 5/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:55 am
DUB
-
DEN
1 stop16h 45m
Air France
Tue 6/2312:12 pm
DEN
-
DUB
1 stop12h 43m
Air France
Deal found 5/13$529
This Finnair deal was found by Cheapflights users on 5/14. 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.
Wed 6/2412:40 pm
DUB
-
DEN
1 stop13h 56m
Multiple Airlines
Tue 6/306:35 pm
DEN
-
DUB
1 stop17h 55m
Multiple Airlines
Deal found 5/14$534
This Finnair deal was found by Cheapflights users on 5/13. 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.
Wed 6/1712:40 pm
DUB
-
DEN
1 stop13h 56m
Multiple Airlines
Mon 6/226:35 pm
DEN
-
DUB
1 stop18h 00m
Multiple Airlines
Deal found 5/13$535
This Finnair deal was found by Cheapflights users on 5/13. 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 5/229:30 am
DUB
-
DEN
1 stop21h 29m
Finnair
Thu 5/282:21 pm
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 5/13$537
This Finnair deal was found by Cheapflights users on 5/9. 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 5/1812:40 pm
DUB
-
DEN
1 stop14h 15m
Finnair
Mon 6/12:10 pm
DEN
-
DUB
1 stop14h 40m
Finnair
Deal found 5/9$538
This Finnair deal was found by Cheapflights users on 5/11. 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 5/2712:39 pm
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 5/11$539
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:10 am
DUB
-
DEN
2 stops18h 30m
Delta
Sun 6/75:40 am
DEN
-
DUB
2 stops19h 15m
Delta
Deal found 5/14$540
This Delta deal was found by Cheapflights users on 5/13. 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.
Fri 6/511:10 am
DUB
-
DEN
2 stops19h 31m
Delta
Sat 6/205:45 am
DEN
-
DUB
1 stop20h 00m
Delta
Deal found 5/13$541
This Delta deal was found by Cheapflights users on 5/13. 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 6/76:00 am
DUB
-
DEN
1 stop16h 40m
Delta
Sat 6/271:15 pm
DEN
-
DUB
1 stop12h 30m
Delta
Deal found 5/13$542
This Delta deal was found by Cheapflights users on 5/11. 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.
Mon 5/188:55 am
DUB
-
DEN
2 stops18h 20m
Delta
Mon 6/17:55 am
DEN
-
DUB
2 stops17h 00m
Delta
Deal found 5/11$543
This Flighttix deal was found by Cheapflights users on 5/10. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:45 pm
DUB
-
DEN
1 stop15h 48m
British Airways
Tue 6/236:38 am
DEN
-
DUB
1 stop19h 57m
British Airways
Deal found 5/10$546

Find flight deals from Ireland to Colorado

Keep the following information in mind while searching for Ireland to Colorado flight deals. Data was last updated May 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$529
(Expedia)

One-way from

$354
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$700

Good round-trip deal

$544 or less

Good one-way deal

$666 or less
Provider with most accurate pricing for Dublin-Denver Intl flight deals.
Provider most trusted by Cheapflights users for Dublin-Denver Intl flights.
From Ireland to Colorado
One-way flight from Ireland to Colorado
Highest demand for flights based on searches. 14% potential increase in price ($128 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Average for round-trip flights in May 2026
Price to beat on a round-trip flight from Ireland to Colorado.
Price to beat on a one-way flight from Ireland to Colorado.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to Colorado 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 May 14, 2026.
Use the filters below to find and compare flights from Ireland to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 6/17

12:40 pm-7:36 pm

1 stop13h 56m

Denver Intl

Mon 6/22

6:35 pm-7:35 pm

1 stop18h 00m

$535

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 6/5

8:55 am-8:15 pm

2 stops18h 20m

Denver Intl

Sat 6/20

5:40 am-7:55 am

2 stops19h 15m

$541

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 6/7

6:00 am-3:40 pm

1 stop16h 40m

Denver Intl

Sat 6/27

9:19 am-7:55 am

1 stop15h 36m

$541

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 6/17

5:55 am-3:38 pm

2 stops16h 43m

Denver Intl

Mon 6/22

7:05 am-7:55 am

2 stops17h 50m

$541

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 6/6

11:10 am-10:40 pm

2 stops18h 30m

Denver Intl

Sat 6/13

5:40 am-7:55 am

2 stops19h 15m

$542

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 5/25

12:00 pm-8:15 pm

1 stop15h 15m

Denver Intl

Wed 6/10

12:12 pm-7:55 am

1 stop12h 43m

$551

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 6/20

12:00 pm-11:06 pm

2 stops18h 06m

Denver Intl

Thu 6/25

12:59 am-10:00 am

1 stop26h 01m

$618
Quickest round-trip

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 6/6

12:35 pm-12:30 am

1 stop18h 55m

Denver Intl

Sat 6/13

8:00 pm-11:45 am

Nonstop8h 45m

$636

ShannonDenver

SNN - DEN

SNNDEN

Shannon

Thu 6/4

9:15 pm-3:32 pm

2 stops25h 17m

Denver Intl

Mon 6/8

12:28 pm-11:20 am

2 stops15h 52m

$691

CorkDenver

ORK - DEN

ORKDEN

Cork

Thu 6/4

7:10 am-12:17 am

2 stops24h 07m

Denver Intl

Mon 6/8

2:22 pm-3:10 pm

2 stops17h 48m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from Ireland to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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 Colorado

How far ahead should I book a flight from Ireland to Colorado?

The price you pay for your flight from Ireland to Colorado may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, June is the cheapest month in which you can book a flight from Ireland to Colorado (average of $397). Flying from Ireland to Colorado 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.

What is the cheapest time of day to fly from IE to CO?

Find hourly flight availability from Ireland to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 14, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Colorado as you normally would.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated May 14, 2026.
Read reviews from past customers who have flown United Airlines,Aer Lingus, andAmerican Airlines from Ireland to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Ireland to Colorado flight route?

  • How long is the flight from Ireland to Colorado?

    A quick flight from Ireland to Colorado can take about 18h 20m. Delta provides one of the quickest options available for as low as $541. The distance from Ireland to Colorado is about 4378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $385. However, be on the lookout for offers from Icelandair and British Airways, as they are both options that can get you from Ireland to Colorado for a low price.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Ireland to Colorado (average of $397). Flying from Ireland to Colorado 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

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ireland to Colorado

Discover the top 3 airlines that operate flights from Ireland to Colorado. 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 May 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$454Average$700FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$493Average$979FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$625Average$864FlexibilityNo cancel feeOn-time69%

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