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Ireland

$220+ Cheap flights from Colorado 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Colorado to Ireland

Keep the following information in mind while searching for Colorado to Ireland flight deals. Data was last updated July 31, 2025.

Round-trip from

$370
(United Airlines)

One-way from

$221
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$788

Good round-trip deal

$530 or less

Good one-way deal

$454 or less
From Colorado to Ireland
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One-way flight from Colorado to Ireland
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Highest demand for flights based on searches. 25% potential increase in price ($204 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Colorado to Ireland.
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Price to beat on a one-way flight from Colorado to Ireland.
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Find flight deals from Colorado to Ireland

Cheapest flights from Colorado to Ireland
Explore the most affordable flight options available from Colorado to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:40 pmDEN - DUB
1 stop13h 35mIcelandair
Sat 11/111:30 amDUB - DEN
1 stop13h 35mIcelandair
Deal found 7/30$371
This CheapOair deal was found by Cheapflights users on 7/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/109:40 amDEN - DUB
1 stop15h 05mMultiple Airlines
Mon 8/188:00 pmDUB - DEN
1 stop24h 45mMultiple Airlines
Deal found 7/31$374
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/258:28 pmDEN - DUB
1 stop30h 17mUnited Airlines
Fri 9/59:50 amDUB - DEN
1 stop31h 24mUnited Airlines
Deal found 7/30$376
This Air Canada deal was found by Cheapflights users on 7/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:52 amDEN - DUB
2 stops16h 53mAir Canada
Tue 9/169:20 amDUB - DEN
1 stop15h 58mAir Canada
Deal found 7/30$377
This Delta deal was found by Cheapflights users on 7/31. 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.
Mon 8/1112:10 pmDEN - DUB
2 stops14h 50mDelta
Wed 8/209:10 amDUB - DEN
2 stops20h 59mDelta
Deal found 7/31$391
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:15 pmDEN - DUB
1 stop17h 40mLufthansa
Tue 10/289:10 amDUB - DEN
1 stop13h 50mLufthansa
Deal found 7/30$392
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Mon 8/117:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Wed 8/203:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
Deal found 7/30$396
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/255:50 pmDEN - DUB
1 stop35h 20mSWISS
Thu 9/46:40 pmDUB - DEN
2 stops34h 20mSWISS
Deal found 7/29$399
This Iberia deal was found by Cheapflights users on 7/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:32 pmDEN - DUB
1 stop11h 08mIberia
Wed 9/312:40 pmDUB - DEN
1 stop14h 20mIberia
Deal found 7/29$404
This KLM deal was found by Cheapflights users on 7/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2611:40 amDEN - DUB
1 stop15h 40mKLM
Mon 11/311:30 amDUB - DEN
2 stops15h 50mKLM
Deal found 7/31$418
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/37:50 amDEN - SNN
1 stop16h 40mUnited Airlines
Tue 8/199:30 amSNN - DEN
1 stop17h 42mUnited Airlines
Deal found 7/30$474
This American Airlines deal was found by Cheapflights users on 7/30. 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 11/95:25 pmDEN - SNN
1 stop16h 20mAmerican Airlines
Mon 11/177:50 amSNN - DEN
1 stop14h 40mAmerican Airlines
Deal found 7/30$484

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 July 31, 2025.
Use the filters below to find and compare flights from Colorado to Ireland that are best for you.

Fly from

Colorado

Fly to

Ireland

Route

Depart

Return

Price

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Fri 10/24

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Sat 11/1

11:30 am-7:05 pm

1 stop13h 35m

$371

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 8/10

9:40 am-7:45 am

1 stop15h 05m

Dublin

Mon 8/18

8:00 pm-1:45 pm

1 stop24h 45m

$374

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 8/25

8:28 pm-9:45 am

1 stop30h 17m

Dublin

Fri 9/5

9:50 am-10:14 am

1 stop31h 24m

$376

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 9/10

7:52 am-7:45 am

2 stops16h 53m

Dublin

Tue 9/16

9:20 am-6:18 pm

1 stop15h 58m

$377

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 8/11

12:10 pm-10:00 am

2 stops14h 50m

Dublin

Wed 8/20

9:10 am-11:09 pm

2 stops20h 59m

$391

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 10/22

4:15 pm-4:55 pm

1 stop17h 40m

Dublin

Tue 10/28

9:10 am-5:00 pm

1 stop13h 50m

$392

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 8/11

7:55 pm-11:40 am

Nonstop8h 45m

Dublin

Wed 8/20

3:25 pm-5:59 pm

Nonstop9h 34m

$396

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 8/25

5:50 pm-12:10 pm

1 stop35h 20m

Dublin

Thu 9/4

6:40 pm-10:00 pm

2 stops34h 20m

$399

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 8/26

5:32 pm-11:40 am

1 stop11h 08m

Dublin

Wed 9/3

12:40 pm-8:00 pm

1 stop14h 20m

$404

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 10/26

11:40 am-9:20 am

1 stop15h 40m

Dublin

Mon 11/3

11:30 am-8:20 pm

2 stops15h 50m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 45 results
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Best time to book a flight from Colorado to Ireland

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

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

Currently, November is the cheapest month in which you can book a flight from Colorado to Ireland (average of $509). Flying from Colorado to Ireland in June is currently the most expensive (average of $924). 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 CO to IE?

Find hourly flight availability from Colorado to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

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

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 July 31, 2025.
Read through reviews of airlines operating flights from Colorado to Ireland, such as Delta, KLM, and Air France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Colorado to Ireland. 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 Colorado to Ireland flight route?

    Within the past month, 8 users have taken a look at flights from Colorado to Ireland.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $221. British Airways flights start at $305 while deals on United Airlines start at $316 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Colorado to Ireland (average of $509). Flying from Colorado to Ireland in June is currently the most expensive (average of $924). 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 Colorado to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Colorado to Ireland

Discover the top 10 airlines that operate flights from Colorado 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$656FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$344Average$486FlexibilityNo cancel feeOn-time76%
IberiaCheapest$352Average$568FlexibilityNo cancel feeOn-time77%
KLMCheapest$362Average$547FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$401Average$695FlexibilityNo cancel feeOn-time69%
DeltaCheapest$403Average$655FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$413Average$554FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$436Average$875FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$438Average$574FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$464Average$622FlexibilityNo cancel feeOn-time76%

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