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$336+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
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 agosto 18, 2025.

Round-trip from

$445
(lastminute.com)

One-way from

$336
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$879

Good one-way deal

$760 or less
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. 12% potential increase in price ($114 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 agosto 18, 2025.

This lastminute.com deal was found by Cheapflights users on 8/16. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/43:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
jue. 9/187:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Deal found 8/16$445
This Rumbo deal was found by Cheapflights users on 8/18. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/53:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
dom. 9/217:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Deal found 8/18$456
This Expedia deal was found by Cheapflights users on 8/18. 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.
lun. 9/153:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
lun. 9/227:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Deal found 8/18$465
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/83:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
lun. 9/157:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Deal found 8/18$536
This SmartFares deal was found by Cheapflights users on 8/17. 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.
jue. 9/42:15 pmDUB - DEN
1 stop29h 15mIcelandair
jue. 9/184:40 pmDEN - DUB
1 stop11h 25mIcelandair
Deal found 8/17$539
This SmartFares deal was found by Cheapflights users on 8/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/42:15 pmDUB - DEN
1 stop29h 15mIcelandair
sáb. 9/204:40 pmDEN - DUB
1 stop11h 25mIcelandair
Deal found 8/16$540
This oojo deal was found by Cheapflights users on 8/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/152:15 pmDUB - DEN
1 stop11h 40mIcelandair
lun. 9/224:40 pmDEN - DUB
1 stop13h 35mIcelandair
Deal found 8/18$567
This SmartFares deal was found by Cheapflights users on 8/17. 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.
jue. 9/42:15 pmDUB - DEN
1 stop29h 15mIcelandair
vie. 9/194:40 pmDEN - DUB
1 stop13h 35mIcelandair
Deal found 8/17$593
This lastminute.com deal was found by Cheapflights users on 8/18. 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.
jue. 10/23:25 pmDUB - DEN
Nonstop9h 34mAer Lingus
jue. 10/97:55 pmDEN - DUB
Nonstop8h 45mAer Lingus
Deal found 8/18$598
This Ovago deal was found by Cheapflights users on 8/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:30 pmORK - DEN
2 stops33h 55mAer Lingus
mar. 9/307:00 amDEN - ORK
2 stops20h 45mAer Lingus
Deal found 8/17$745
This British Airways deal was found by Cheapflights users on 8/16. 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.
mar. 9/168:30 pmORK - DEN
2 stops29h 06mBritish Airways
lun. 9/2912:32 pmDEN - ORK
2 stops15h 13mBritish Airways
Deal found 8/16$761
This Expedia deal was found by Cheapflights users on 8/18. 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.
jue. 9/188:30 pmORK - DEN
2 stops54h 17mMultiple Airlines
mar. 9/305:37 pmDEN - ORK
2 stops14h 38mMultiple Airlines
Deal found 8/18$769

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 agosto 18, 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

jue. 9/4

3:25 pm-5:59 pm

Nonstop9h 34m

Denver Intl

jue. 9/18

7:55 pm-11:40 am

Nonstop8h 45m

$445

DublinDenver

DUB - DEN

DUBDEN

Dublin

vie. 9/5

3:25 pm-5:59 pm

Nonstop9h 34m

Denver Intl

dom. 9/21

7:55 pm-11:40 am

Nonstop8h 45m

$456

DublinDenver

DUB - DEN

DUBDEN

Dublin

lun. 9/15

3:25 pm-5:59 pm

Nonstop9h 34m

Denver Intl

lun. 9/22

7:55 pm-11:40 am

Nonstop8h 45m

$465

DublinDenver

DUB - DEN

DUBDEN

Dublin

lun. 9/8

3:25 pm-5:59 pm

Nonstop9h 34m

Denver Intl

lun. 9/15

7:55 pm-11:40 am

Nonstop8h 45m

$536

DublinDenver

DUB - DEN

DUBDEN

Dublin

jue. 9/4

2:15 pm-12:30 pm

1 stop29h 15m

Denver Intl

jue. 9/18

4:40 pm-11:05 am

1 stop11h 25m

$539

DublinDenver

DUB - DEN

DUBDEN

Dublin

jue. 9/4

2:15 pm-12:30 pm

1 stop29h 15m

Denver Intl

sáb. 9/20

4:40 pm-11:05 am

1 stop11h 25m

$539

DublinDenver

DUB - DEN

DUBDEN

Dublin

lun. 9/15

2:15 pm-6:55 pm

1 stop11h 40m

Denver Intl

lun. 9/22

4:40 pm-1:15 pm

1 stop13h 35m

$567

DublinDenver

DUB - DEN

DUBDEN

Dublin

jue. 9/4

2:15 pm-12:30 pm

1 stop29h 15m

Denver Intl

vie. 9/19

4:40 pm-1:15 pm

1 stop13h 35m

$593

CorkDenver

ORK - DEN

ORKDEN

Cork

jue. 9/18

8:30 pm-11:25 pm

2 stops33h 55m

Denver Intl

mar. 9/30

7:00 am-10:45 am

2 stops20h 45m

$745

CorkDenver

ORK - DEN

ORKDEN

Cork

mar. 9/16

8:30 pm-6:36 pm

2 stops29h 06m

Denver Intl

lun. 9/29

12:32 pm-10:45 am

2 stops15h 13m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 43 results
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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, October is the cheapest month in which you can book a flight from Ireland to Colorado (average of $197). Flying from Ireland to Colorado in March is currently the most expensive (average of $278). 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 agosto 18, 2025.

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 agosto 18, 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
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Aer Lingus
7.2
Good
1,220 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Icelandair
7.0
Good
529 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
British Airways
6.7
Okay
7,277 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 9h 34m. Aer Lingus provides one of the quickest options available for as low as $445. 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, October is the cheapest month in which you can book a flight from Ireland to Colorado (average of $197). Flying from Ireland to Colorado in March is currently the most expensive (average of $278). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 agosto 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$432Average$698FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$568Average$743FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$606Average$867FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$650Average$770FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$706Average$895FlexibilityNo cancel feeOn-time69%

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