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Cheap flights from Ireland to Colorado from £435

DUB — DEN
27 Oct — 3 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Colorado

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Colorado

Tue 10/1111:30 -
1 stop13h 30m
Tue 17/1115:40 -
1 stop11h 35m
Deal found 26/9£435
Sun 22/1111:30 -
1 stop13h 30m
Mon 30/1115:40 -
1 stop11h 35m
Deal found 24/9£438
Thu 12/1111:30 -
1 stop13h 30m
Tue 1/1215:40 -
1 stop11h 35m
Deal found 27/9£448
Sat 21/1111:30 -
1 stop13h 30m
Mon 30/1115:40 -
1 stop11h 35m
Deal found 24/9£467
Sat 21/1111:30 -
1 stop13h 30m
Sat 28/1115:40 -
1 stop11h 35m
Deal found 24/9£468
Sat 21/1111:30 -
1 stop13h 30m
Tue 1/1215:40 -
1 stop11h 35m
Deal found 23/9£470
Thu 12/1105:45 -
2 stops18h 25m
Thu 26/1108:05 -
2 stops17h 55m
Deal found 23/9£471
Thu 12/1112:55 -
1 stop13h 58m
Thu 26/1117:05 -
1 stop13h 55m
Deal found 25/9£472
Sun 22/1120:40 -
1 stop25h 30m
Mon 30/1115:10 -
2 stops17h 15m
Deal found 24/9£473
Thu 12/1120:40 -
1 stop25h 30m
Tue 1/1214:33 -
2 stops16h 47m
Deal found 27/9£474
Wed 23/1213:05 -
1 stop33h 05m
Sun 3/109:02 -
2 stops17h 53m
Deal found 26/9£475

Find flight deals from Ireland to Colorado

Round-trip from

£435

Popular in

July

Cheapest in

February

Average price

£576
Icelandair
  • Icelandair
  • 10/11-17/11
  • 2 total stops
  • 25h 05m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 30/9

16:45-00:17

1 stop14h 32m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£454

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sun 22/11

11:30-18:00

1 stop13h 30m

Denver Intl

Sun 29/11

15:40-10:15

1 stop11h 35m

£467

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 21/11

11:30-18:00

1 stop13h 30m

Denver Intl

Sun 29/11

15:40-10:15

1 stop11h 35m

£470

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 24/11

11:30-18:00

1 stop13h 30m

Denver Intl

Sun 29/11

15:40-10:15

1 stop11h 35m

£470

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 12/11

05:45-17:10

2 stops18h 25m

Denver Intl

Thu 26/11

06:00-07:45

1 stop18h 45m

£474

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 12/11

20:40-15:10

1 stop25h 30m

Denver Intl

Tue 1/12

14:33-14:20

2 stops16h 47m

£474

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 24/11

08:50-22:41

2 stops20h 51m

Denver Intl

Sun 29/11

17:01-07:50

1 stop31h 49m

£479

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 20/10

05:55-17:47

2 stops18h 52m

Denver Intl

Tue 27/10

06:00-07:45

1 stop19h 45m

£479

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 24/11

08:50-23:59

2 stops22h 09m

Denver Intl

Wed 2/12

14:27-17:00

2 stops19h 33m

£480

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 20/10

13:15-20:13

1 stop13h 58m

Denver Intl

Tue 27/10

11:28-09:45

1 stop16h 17m

£482

Flights are sorted by cheapest return flights first.

Deals found on 26/9

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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 return price

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, February is the cheapest month in which you can book a flight from Ireland to Colorado (average of £349). Flying from Ireland to Colorado in July is currently the most expensive (average of £728). 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?

When flying from Ireland to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How far ahead should I book a flight from Ireland to Colorado?

The best time to book flights from Ireland to Colorado is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Colorado

Read through reviews of airlines operating flights from Ireland to Colorado, such as Aer Lingus,Icelandair, andBritish Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,793 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
Aer Lingus
7.3
Good
1,793 reviews
Aer Lingus
7.3
Good
1,793 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
Icelandair
6.9
Okay
753 reviews
Aer Lingus
7.3
Good
1,793 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
British Airways
6.7
Okay
8,236 reviews
Aer Lingus
7.3
Good
1,793 reviews
Check prices

Entertainment

7.0

Boarding

7.4

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight

Related info for your journey

  • How popular is this Ireland to Colorado flight route?

    The Ireland to Colorado flight path was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ireland to Colorado?

    For as low as £467, Icelandair can have you in Colorado from Ireland in 13h 30m. Airlines will cover a distance of 4378 mi. Both multi-stop and direct 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 holiday 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, February is the cheapest month in which you can book a flight from Ireland to Colorado (average of £349). Flying from Ireland to Colorado in July is currently the most expensive (average of £728). 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

Top 3 airlines flying from Ireland to Colorado

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£305Average£365FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£339Average£463FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£370Average£639FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Colorado.

Can Cheapflights find flights from Ireland to Colorado with no change fees?

Certainly. Search results for flights to Colorado from Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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