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$383+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheap flight deals from Ireland to Colorado

Keep the following information in mind while searching for Ireland to Colorado flight deals. Data was last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$581
(Gotogate)

One-way from

$383
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$691

Good round-trip deal

$433 or less

Good one-way deal

$653 or less
Provider with most accurate pricing for Dublin-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Dublin-Denver Intl flights.
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From Ireland to Colorado
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One-way flight from Ireland to Colorado
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Highest demand for flights based on searches. 13% potential increase in price ($126 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Ireland to Colorado.
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Price to beat on a one-way flight from Ireland to Colorado.
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Find 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 November 6, 2025.

This Gotogate deal was found by Cheapflights users on 11/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:30 amDUB - DEN
1 stop13h 35mIcelandair
Mon 12/13:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/6$581
This Justfly.com deal was found by Cheapflights users on 11/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:30 amDUB - DEN
1 stop13h 35mIcelandair
Tue 12/23:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/6$593
This Icelandair deal was found by Cheapflights users on 11/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:30 amDUB - DEN
1 stop13h 35mIcelandair
Sat 12/133:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/5$619
This Booking.com deal was found by Cheapflights users on 11/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:30 amDUB - DEN
1 stop13h 35mIcelandair
Sat 12/133:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/6$632
This Icelandair deal was found by Cheapflights users on 11/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:30 amDUB - DEN
1 stop13h 35mIcelandair
Mon 12/153:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/5$665
This Icelandair deal was found by Cheapflights users on 11/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2211:30 amDUB - DEN
1 stop13h 35mIcelandair
Sat 12/133:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/5$680
This Icelandair deal was found by Cheapflights users on 11/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:30 amDUB - DEN
1 stop13h 35mIcelandair
Thu 12/113:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/5$697
This Icelandair deal was found by Cheapflights users on 11/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2211:30 amDUB - DEN
1 stop13h 35mIcelandair
Mon 12/153:40 pmDEN - DUB
1 stop11h 35mIcelandair
Deal found 11/5$726
This SmartFares deal was found by Cheapflights users on 11/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:10 amDUB - DEN
1 stop17h 50mMultiple Airlines
Sun 11/301:25 pmDEN - DUB
1 stop10h 45mMultiple Airlines
Deal found 11/5$728
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/175:10 amDUB - DEN
1 stop15h 30mLufthansa
Sun 11/3011:15 amDEN - DUB
1 stop13h 55mLufthansa
Deal found 11/5$732
This Mytrip deal was found by Cheapflights users on 11/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:25 pmSNN - DEN
2 stops31h 40mMultiple Airlines
Wed 11/263:40 pmDEN - SNN
2 stops16h 00mMultiple Airlines
Deal found 11/6$826
This British Airways deal was found by Cheapflights users on 11/5. 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 11/196:40 amDUB - COS
2 stops20h 47mBritish Airways
Tue 12/210:27 amCOS - DUB
2 stops16h 48mBritish Airways
Deal found 11/5$910

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 November 6, 2025.
Use the filters below to find and compare flights from Ireland to Colorado that are best for you.

Fly from

Ireland

Fly to

Colorado

Route

Depart

Return

Price

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 11/19

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 12/2

3:40 pm-10:15 am

1 stop11h 35m

$593

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 11/21

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 12/16

3:40 pm-10:15 am

1 stop11h 35m

$619

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 11/19

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Wed 12/10

3:40 pm-10:15 am

1 stop11h 35m

$619

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 11/18

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Sat 12/13

3:40 pm-10:15 am

1 stop11h 35m

$619

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 11/17

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Wed 12/10

3:40 pm-10:15 am

1 stop11h 35m

$619

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 1/9

12:30 pm-10:48 pm

2 stops41h 18m

Denver Intl

Thu 1/15

6:41 am-11:45 am

2 stops22h 04m

$625

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 1/10

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 3/31

4:40 pm-11:05 am

1 stop11h 25m

$687

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 11/21

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Thu 12/11

3:40 pm-10:15 am

1 stop11h 35m

$697

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 11/20

5:00 am-1:40 pm

1 stop15h 40m

Denver Intl

Fri 12/12

4:05 pm-10:20 am

1 stop11h 15m

$746

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 11/22

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Thu 12/11

3:40 pm-10:15 am

1 stop11h 35m

$757

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 48 results
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3
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5

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

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

Currently, April is the cheapest month in which you can book a flight from Ireland to Colorado (average of $432). Flying from Ireland to Colorado in June is currently the most expensive (average of $722). 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 November 6, 2025.

It’s optimal to fly from Ireland to Colorado in the afternoon. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight in the morning.

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 November 6, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Aer Lingus from Ireland to Colorado. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,007 reviews
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,040 reviews
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Aer Lingus
7.2
Good
1,365 reviews
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.1
Good
572 reviews
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,500 reviews
United Airlines
7.4
Good
9,007 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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?

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

  • How long is the flight from Ireland to Colorado?

    A quick flight from Ireland to Colorado can take about 13h 35m. Icelandair provides one of the quickest options available for as low as $593. The distance from Ireland to Colorado is about 4378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, April is the cheapest month in which you can book a flight from Ireland to Colorado (average of $432). Flying from Ireland to Colorado in June is currently the most expensive (average of $722). 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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Alternative routes for Ireland to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ireland to Colorado

Discover the top 5 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$430Average$695FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$433Average$808FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$589Average$765FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$625Average$957FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$650Average$755FlexibilityNo cancel feeOn-time76%

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