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Colorado

$363+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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 January 21, 2026.

This Finnair deal was found by Cheapflights users on 1/20. 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 5/19:30 am
DUB
-
DEN
1 stop17h 25m
Multiple Airlines
Tue 5/126:40 pm
DEN
-
DUB
1 stop17h 50m
Multiple Airlines
Deal found 1/20$383
This Finnair deal was found by Cheapflights users on 1/20. 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.
Sat 5/99:30 am
DUB
-
DEN
1 stop20h 10m
Finnair
Sat 5/1610:28 am
DEN
-
DUB
1 stop16h 17m
Finnair
Deal found 1/20$392
This Priceline deal was found by Cheapflights users on 1/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/269:30 am
DUB
-
DEN
1 stop21h 37m
Finnair
Tue 6/212:39 pm
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 1/21$401
This Trip.com deal was found by Cheapflights users on 1/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:30 am
DUB
-
DEN
1 stop17h 25m
Finnair
Wed 4/2910:28 am
DEN
-
DUB
1 stop16h 17m
Finnair
Deal found 1/21$410
This Finnair deal was found by Cheapflights users on 1/20. 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 6/59:40 am
DUB
-
DEN
2 stops21h 27m
Multiple Airlines
Sun 6/76:40 pm
DEN
-
DUB
1 stop17h 55m
Multiple Airlines
Deal found 1/20$437
This British Airways deal was found by Cheapflights users on 1/19. 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 2/258:50 am
DUB
-
DEN
1 stop13h 40m
British Airways
Tue 3/35:25 pm
DEN
-
DUB
1 stop19h 15m
British Airways
Deal found 1/19$439
This British Airways deal was found by Cheapflights users on 1/20. 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.
Mon 2/238:50 am
DUB
-
DEN
1 stop13h 40m
British Airways
Sun 3/86:25 pm
DEN
-
DUB
1 stop31h 30m
British Airways
Deal found 1/20$440
This British Airways deal was found by Cheapflights users on 1/21. 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.
Thu 2/55:35 pm
ORK
-
DEN
2 stops36h 41m
British Airways
Mon 2/91:40 pm
DEN
-
ORK
2 stops14h 30m
British Airways
Deal found 1/21$610
This British Airways deal was found by Cheapflights users on 1/19. 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 5/68:30 pm
ORK
-
DEN
1 stop27h 00m
British Airways
Sun 5/106:40 pm
DEN
-
ORK
1 stop18h 10m
British Airways
Deal found 1/19$624
This British Airways deal was found by Cheapflights users on 1/19. 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.
Thu 4/307:40 am
SNN
-
DEN
1 stop15h 50m
British Airways
Mon 5/410:36 am
DEN
-
SNN
2 stops22h 34m
British Airways
Deal found 1/19$624
This American Airlines deal was found by Cheapflights users on 1/19. 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.
Thu 4/301:45 pm
SNN
-
DEN
2 stops17h 14m
American Airlines
Mon 5/47:00 am
DEN
-
SNN
2 stops15h 25m
American Airlines
Deal found 1/19$644
This KLM deal was found by Cheapflights users on 1/21. 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 2/61:20 pm
ORK
-
DEN
2 stops18h 08m
KLM
Tue 2/1012:07 pm
DEN
-
ORK
2 stops17h 48m
KLM
Deal found 1/21$781

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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$383
(Finnair)

One-way from

$363
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$801

Good one-way deal

$722 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. 14% potential increase in price ($137 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 January 2026
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 January 21, 2026.
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

Mon 2/23

8:50 am-3:30 pm

1 stop13h 40m

Denver Intl

Sun 3/8

6:25 pm-7:55 am

1 stop31h 30m

$440

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 2/25

1:10 pm-10:37 pm

2 stops16h 27m

Denver Intl

Tue 3/3

5:25 pm-7:40 pm

1 stop19h 15m

$444

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 2/23

11:30 am-9:36 pm

1 stop17h 06m

Denver Intl

Sun 3/8

7:00 am-8:40 am

2 stops19h 40m

$448

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 3/10

6:00 pm-4:30 pm

1 stop28h 30m

Denver Intl

Tue 3/17

5:58 pm-5:00 pm

2 stops17h 02m

$452

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 2/23

11:30 am-8:14 pm

2 stops15h 44m

Denver Intl

Sun 3/8

7:05 am-8:40 am

1 stop19h 35m

$460

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 2/6

11:30 am-9:11 pm

1 stop16h 41m

Denver Intl

Tue 2/10

10:45 am-8:40 am

2 stops14h 55m

$462

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 4/2

9:30 am-10:40 pm

1 stop20h 10m

Denver Intl

Sun 4/5

6:40 pm-2:30 pm

1 stop12h 50m

$465

CorkDenver

ORK - DEN

ORKDEN

Cork

Thu 2/5

5:35 pm-11:16 pm

2 stops36h 41m

Denver Intl

Mon 2/9

1:40 pm-11:10 am

2 stops14h 30m

$610

CorkDenver

ORK - DEN

ORKDEN

Cork

Wed 5/6

8:30 pm-4:30 pm

1 stop27h 00m

Denver Intl

Sun 5/10

6:40 pm-7:50 pm

1 stop18h 10m

$624

ShannonDenver

SNN - DEN

SNNDEN

Shannon

Thu 4/30

7:40 am-4:30 pm

1 stop15h 50m

Denver Intl

Mon 5/4

6:40 pm-4:10 pm

1 stop14h 30m

$624

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 32 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 July is currently the most expensive (average of $708). 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.

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 January 21, 2026.
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
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,174 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,441 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
602 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 40m. British Airways provides one of the quickest options available for as low as $440. The distance from Ireland to Colorado is about 4378 mi.

  • 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 July is currently the most expensive (average of $708). 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$433Average$808FlexibilityNo 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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