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Colorado

$432+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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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 December 12, 2025.

This Iberia deal was found by Cheapflights users on 12/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:00 pmDUB - DEN
1 stop14h 11mIberia
Thu 1/16:21 amDEN - DUB
1 stop17h 49mIberia
Deal found 12/11$810
This Delta deal was found by Cheapflights users on 12/11. 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.
Wed 12/245:55 amDUB - DEN
2 stops21h 13mDelta
Thu 1/16:00 amDEN - DUB
1 stop18h 45mDelta
Deal found 12/11$859
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:45 amDUB - DEN
2 stops16h 13mDelta
Thu 1/86:30 amDEN - DUB
2 stops18h 30mDelta
Deal found 12/10$865
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:40 amDUB - DEN
1 stop16h 06mUnited Airlines
Sat 1/36:00 amDEN - DUB
1 stop21h 20mUnited Airlines
Deal found 12/11$903
This SmartFares deal was found by Cheapflights users on 12/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:20 pmDUB - DEN
2 stops37h 55mMultiple Airlines
Fri 2/69:59 amDEN - DUB
1 stop14h 31mMultiple Airlines
Deal found 12/11$909
This SmartFares deal was found by Cheapflights users on 12/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:20 pmDUB - DEN
2 stops37h 55mLufthansa
Fri 2/611:20 amDEN - DUB
2 stops22h 05mLufthansa
Deal found 12/11$946
This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:15 pmORK - DEN
2 stops28h 58mKLM
Tue 12/3010:54 amDEN - ORK
2 stops16h 51mKLM
Deal found 12/11$993
This lastminute.com deal was found by Cheapflights users on 12/11. 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.
Fri 12/1210:40 amDUB - DEN
1 stop12h 50mLufthansa
Fri 12/128:20 pmDEN - DUB
1 stop13h 50mLufthansa
Deal found 12/11$1,030
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:50 amSNN - DEN
2 stops40h 14mAmerican Airlines
Tue 12/305:44 pmDEN - SNN
2 stops34h 46mAmerican Airlines
Deal found 12/10$1,129
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:40 amORK - DEN
2 stops16h 24mAmerican Airlines
Tue 12/305:25 pmDEN - ORK
1 stop15h 00mAmerican Airlines
Deal found 12/11$1,190
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:45 pmSNN - DEN
2 stops16h 14mMultiple Airlines
Wed 12/315:25 pmDEN - SNN
1 stop19h 00mMultiple Airlines
Deal found 12/11$1,268
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:45 pmSNN - DEN
2 stops16h 14mAmerican Airlines
Wed 12/316:44 amDEN - SNN
2 stops27h 01mAmerican Airlines
Deal found 12/11$1,325

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$634
(lastminute.com)

One-way from

$432
(oojo)

Popular in

June

Cheapest in

September

Average price

$787

Good round-trip deal

$433 or less

Good one-way deal

$635 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 Colorado
Search Deals
One-way flight from Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ireland to Colorado.
Search Deals
Price to beat on a one-way flight from Ireland to Colorado.
Search Deals

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 December 12, 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

Fri 1/16

12:30 pm-10:53 pm

2 stops41h 23m

Denver Intl

Tue 1/20

1:10 pm-11:45 am

2 stops39h 35m

$634

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 2/1

10:10 am-12:28 am

2 stops45h 18m

Denver Intl

Thu 2/5

12:00 pm-9:25 am

2 stops38h 25m

$661

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 5/1

11:45 am-11:01 pm

1 stop18h 16m

Denver Intl

Tue 5/12

11:05 am-9:00 am

1 stop14h 55m

$679

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 5/1

11:45 am-11:01 pm

1 stop18h 16m

Denver Intl

Fri 5/15

11:05 am-9:00 am

1 stop14h 55m

$680

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 2/17

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Mon 3/2

3:40 pm-10:15 am

1 stop11h 35m

$737

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 2/17

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 3/3

3:40 pm-10:15 am

1 stop11h 35m

$737

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 2/15

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 3/3

3:40 pm-10:15 am

1 stop11h 35m

$737

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 2/14

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Tue 3/3

3:40 pm-10:15 am

1 stop11h 35m

$737

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 2/19

11:30 am-6:05 pm

1 stop13h 35m

Denver Intl

Fri 2/27

3:40 pm-10:15 am

1 stop11h 35m

$737

CorkDenver

ORK - DEN

ORKDEN

Cork

Sun 2/1

7:40 am-3:30 pm

1 stop14h 50m

Denver Intl

Sun 3/1

5:25 pm-11:25 pm

1 stop23h 00m

$789

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 34 results
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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

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 $431). Flying from Ireland to Colorado in June is currently the most expensive (average of $710). 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 December 12, 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 December 12, 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
9,094 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,094 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
American Airlines
7.2
Good
11,049 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Aer Lingus
7.2
Good
1,394 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Icelandair
7.0
Good
589 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 14h 50m. Scandinavian Airlines provides one of the quickest options available for as low as $789. The distance from Ireland to Colorado is about 4355 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 WestJet, with whom users have recently found tickets for as low as $351. 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, April is the cheapest month in which you can book a flight from Ireland to Colorado (average of $431). Flying from Ireland to Colorado in June is currently the most expensive (average of $710). 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 Ireland to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ireland to Colorado

Discover the top 4 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$433Average$806FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$484Average$789FlexibilityNo cancel feeOn-time71%
IcelandairCheapest$601Average$737FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$625Average$879FlexibilityNo cancel feeOn-time69%

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