What is the cheapest airline that flies from Ireland to Colorado?

Delta, British Airways, and Aer Lingus are the most popular carriers operating from Ireland to Colorado

Which airlines fly to Colorado?

Aer Lingus, American Airlines and Icelandair are the top three most popular airlines that fly to Colorado from Ireland according to our data. Aer Lingus is the first choice among our users, with 47% of people opting to fly with this airline when travelling to Colorado. Keep in mind that there are 6 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

How long is the flight from Ireland to Colorado?

The average flight duration from Ireland to Colorado depends on which airport you fly into and out of. Flying from Dublin to Denver is 13h 30m on average, while flying from Cork to Denver is 14h 30m on average. Denver is the most popular airport in Colorado.

When did momondo last update prices for flights from Ireland to Colorado?

Prices for flights from Ireland to Colorado were last updated today.

How many operators does momondo search for flights from Ireland to Colorado?

As of October 2026, there are 6 operators available to choose from for flights from Ireland to Colorado.

How old do you have to be to fly from Ireland to Colorado?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Colorado.

What documentation or ID do you need to fly to Colorado?

The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

€342 Cheap Flights from Ireland to Colorado in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ireland to Colorado

Return

One-way

Last minute

Recent return flight deals from Ireland to Colorado

Enter your travel dates to find the best prices.

12:55 - 19:59DUB Dublin-DEN Denver Intl

14h 04m1 stop Dallas/Fort Worth

17:01 - 14:55DEN Denver Intl-DUB Dublin

14h 54m1 stop London Heathrow

€517Multiple Airlines

Mon, 23 Nov - Sun, 6 Dec

12:55 - 19:59DUB Dublin-DEN Denver Intl

14h 04m1 stop Dallas/Fort Worth

17:01 - 19:45DEN Denver Intl-DUB Dublin

19h 44m1 stop London Heathrow

€517Multiple Airlines

Thu, 19 Nov - Mon, 30 Nov

08:50 - 15:10DUB Dublin-DEN Denver Intl

13h 20m1 stop London Heathrow

17:01 - 12:05DEN Denver Intl-DUB Dublin

12h 04m1 stop London Heathrow

€518Aer Lingus

Sat, 12 Dec - Fri, 25 Dec

16:10 - 15:10DUB Dublin-DEN Denver Intl

30h 00m1 stop London Heathrow

17:01 - 07:50DEN Denver Intl-DUB Dublin

31h 49m1 stop London Heathrow

€518British Airways

Sat, 21 Nov - Sat, 28 Nov

20:40 - 15:10DUB Dublin-DEN Denver Intl

25h 30m1 stop London Heathrow

17:01 - 19:45DEN Denver Intl-DUB Dublin

19h 44m1 stop London Heathrow

€518British Airways

Mon, 23 Nov - Sun, 6 Dec

11:30 - 18:00DUB Dublin-DEN Denver Intl

13h 30m1 stop Reykjavik Keflavik Intl

15:40 - 10:15DEN Denver Intl-DUB Dublin

11h 35m1 stop Reykjavik Keflavik Intl

€542Icelandair

Wed, 25 Nov - Sat, 28 Nov

11:30 - 18:00DUB Dublin-DEN Denver Intl

13h 30m1 stop Reykjavik Keflavik Intl

15:40 - 10:15DEN Denver Intl-DUB Dublin

11h 35m1 stop Reykjavik Keflavik Intl

€544Icelandair

Thu, 26 Nov - Wed, 9 Dec

12:55 - 22:20DUB Dublin-DEN Denver Intl

16h 25m1 stop Dallas/Fort Worth

12:12 - 08:40DEN Denver Intl-DUB Dublin

13h 28m1 stop Philadelphia

€553American Airlines

Thu, 12 Nov - Tue, 1 Dec

11:30 - 22:44DUB Dublin-DEN Denver Intl

18h 14m2 stops Philadelphia Charlotte Douglas

14:20 - 09:00DEN Denver Intl-DUB Dublin

11h 40m1 stop Philadelphia

€556American Airlines

Sat, 12 Dec - Mon, 28 Dec

08:45 - 15:10DUB Dublin-DEN Denver Intl

13h 25m1 stop London Heathrow

17:01 - 16:35DEN Denver Intl-DUB Dublin

16h 34m1 stop London Heathrow

€767Aer Lingus

Thu, 10 Dec - Fri, 11 Dec

Recent last minute flight deals from Ireland to Colorado

Enter your travel dates to find the best prices.

12:30 - 19:30DUB Dublin-DEN Denver Intl

14h 00m1 stop Washington, D.C. Dulles Intl

09:35 - 07:30DEN Denver Intl-DUB Dublin

15h 55m2 stops Chicago O'Hare Intl Newark

€714United Airlines

Thu, 22 Oct - Thu, 29 Oct

08:50 - 16:33DUB Dublin-DEN Denver Intl

14h 43m1 stop Washington, D.C. Dulles Intl

16:12 - 09:55DEN Denver Intl-DUB Dublin

11h 43m1 stop Newark

€714United Airlines

Thu, 22 Oct - Thu, 29 Oct

05:55 - 15:49DUB Dublin-DEN Denver Intl

16h 54m2 stops Amsterdam Schiphol Minneapolis St Paul

06:20 - 07:45DEN Denver Intl-DUB Dublin

19h 25m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

€749Delta

Thu, 22 Oct - Thu, 29 Oct

05:30 - 23:43DUB Dublin-DEN Denver Intl

25h 13m3 stops Lisbon Humberto Delgado San Francisco Phoenix Sky Harbor Intl

16:40 - 16:55DEN Denver Intl-DUB Dublin

18h 15m2 stops Reykjavik Keflavik Intl Glasgow Intl

€1,265Multiple Airlines

Thu, 22 Oct - Thu, 29 Oct

08:40 - 15:55DUB Dublin-DEN Denver Intl

14h 15m1 stop London Heathrow

18:15 - 22:05DEN Denver Intl-DUB Dublin

21h 50m1 stop London Heathrow

€1,636Multiple Airlines

Sat, 24 Oct - Fri, 30 Oct

07:30 - 15:55DUB Dublin-DEN Denver Intl

15h 25m1 stop London Heathrow

18:15 - 09:10DEN Denver Intl-DUB Dublin

32h 55m1 stop London Heathrow

€1,713Multiple Airlines

Sat, 24 Oct - Fri, 30 Oct

06:30 - 17:19DUB Dublin-DEN Denver Intl

17h 49m2 stops London Heathrow Chicago O'Hare Intl

18:15 - 13:35DEN Denver Intl-DUB Dublin

13h 20m1 stop London Heathrow

€1,881British Airways

Sat, 24 Oct - Fri, 30 Oct

11:10 - 22:53DUB Dublin-DEN Denver Intl

18h 43m2 stops London Heathrow Chicago O'Hare Intl

18:15 - 13:35DEN Denver Intl-DUB Dublin

13h 20m1 stop London Heathrow

€1,884British Airways

Sat, 24 Oct - Fri, 30 Oct

06:30 - 17:19DUB Dublin-DEN Denver Intl

17h 49m2 stops London Heathrow Chicago O'Hare Intl

18:15 - 16:35DEN Denver Intl-DUB Dublin

16h 20m1 stop London Heathrow

€1,884British Airways

Sat, 24 Oct - Fri, 30 Oct

19:20 - 16:10DUB Dublin-DEN Denver Intl

27h 50m2 stops Glasgow Intl London Heathrow

18:15 - 22:05DEN Denver Intl-DUB Dublin

21h 50m1 stop London Heathrow

€2,263British Airways

Sat, 24 Oct - Fri, 30 Oct

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Lufthansa flights from Ireland to Colorado

Our best Lufthansa deals on Ireland to Colorado flight tickets

Lufthansa

12 Nov

DUB09:10Dublin

13h 25m

1 stop

DEN15:35Denver Intl

26 Nov

DEN17:25Denver Intl

16h 05m

1 stop

DUB16:30Dublin

€566

Lufthansa

12 Nov

DUB05:10Dublin

17h 25m

1 stop

DEN15:35Denver Intl

26 Nov

DEN17:25Denver Intl

16h 05m

1 stop

DUB16:30Dublin

€574

Lufthansa

12 Nov

DUB09:10Dublin

13h 25m

1 stop

DEN15:35Denver Intl

26 Nov

DEN17:25Denver Intl

16h 05m

1 stop

DUB16:30Dublin

€578

Icelandair flights from Ireland to Colorado

Our best Icelandair deals on Ireland to Colorado flight tickets

Icelandair

25 Nov

DUB11:30Dublin

13h 30m

1 stop

DEN18:00Denver Intl

28 Nov

DEN15:40Denver Intl

11h 35m

1 stop

DUB10:15Dublin

€542

Icelandair

26 Nov

DUB11:30Dublin

13h 30m

1 stop

DEN18:00Denver Intl

9 Dec

DEN15:40Denver Intl

11h 35m

1 stop

DUB10:15Dublin

€544

Icelandair

12 Nov

DUB11:30Dublin

13h 30m

1 stop

DEN18:00Denver Intl

26 Nov

DEN15:40Denver Intl

11h 35m

1 stop

DUB10:15Dublin

€549

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 23/11

12:55-19:59

1 stop14h 04m

Denver Intl

Sun 6/12

17:01-14:55

1 stop14h 54m

€517

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 19/11

12:55-19:59

1 stop14h 04m

Denver Intl

Mon 30/11

17:01-19:45

1 stop19h 44m

€517

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 12/12

08:50-15:10

1 stop13h 20m

Denver Intl

Fri 25/12

17:01-12:05

1 stop12h 04m

€518

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 21/11

16:10-15:10

1 stop30h 00m

Denver Intl

Sat 28/11

17:01-07:50

1 stop31h 49m

€518

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 23/11

20:40-15:10

1 stop25h 30m

Denver Intl

Sun 6/12

17:01-19:45

1 stop19h 44m

€518

Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 25/11

11:30-18:00

1 stop13h 30m

Denver Intl

Sat 28/11

15:40-10:15

1 stop11h 35m

€542

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 26/11

11:30-18:00

1 stop13h 30m

Denver Intl

Wed 9/12

15:40-10:15

1 stop11h 35m

€544

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 12/11

12:55-22:20

1 stop16h 25m

Denver Intl

Tue 1/12

12:12-08:40

1 stop13h 28m

€553

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 12/12

11:30-22:44

2 stops18h 14m

Denver Intl

Mon 28/12

14:20-09:00

1 stop11h 40m

€556

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 10/12

08:45-15:10

1 stop13h 25m

Denver Intl

Fri 11/12

17:01-16:35

1 stop16h 34m

€767

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ireland to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The cheapest month to fly to Colorado from Ireland is in April. Flight prices, which tend to average around €460, are often lower during this time because this is during the off-season. If you’re not able to fly to Colorado in April, then February is your next best option. Flight prices from Ireland to Colorado during February average around €556.

What is the cheapest day to depart on your flight to Colorado?

On average, the least expensive day to fly to Colorado from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €677. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Colorado is Saturday, with ticket prices averaging around €1,143.

What is the cheapest Ireland to Colorado flight route?

Fly from Dublin to Denver Intl for the best Ireland - Colorado flight prices

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around €680 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Ireland for as low as €541 on momondo.

What cabin class options are available on Ireland to Colorado flights?

There are 2 cabin classes available to choose from on Ireland to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to Colorado flights?

You could potentially save up to 71% on your flight if you consider stops on a Ireland to Colorado flight.

Cheap Ireland to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Colorado

Best price found	€342
Fastest flight time	13h 30m
Direct flights	None

The best one-way flight to Colorado from Ireland in the past 72 hours is €342. The best return flight deal from Ireland to Colorado found on momondo in the last 72 hours is €517.

The fastest flight from Ireland to Colorado takes 13h 30m

There are no direct flights from Ireland to Colorado. There are no popular flight routes from Ireland to Colorado.

Search flight deals

Frequently asked questions about flying from Ireland to Colorado

When did momondo last update prices for flights from Ireland to Colorado?
Prices for flights from Ireland to Colorado were last updated today.
How many operators does momondo search for flights from Ireland to Colorado?
As of October 2026, there are 6 operators available to choose from for flights from Ireland to Colorado.
How old do you have to be to fly from Ireland to Colorado?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Colorado.
What documentation or ID do you need to fly to Colorado?
The travel and health documents required for your trip to Colorado can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Colorado. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ireland to Colorado?
Based on momondo bookings for flights between Ireland and Colorado, the leading plane model is Airbus A330-200, making up 75.00% of the total bookings. Other popular models include Airbus A321-100/200 with 13.64%, Airbus A330-300 with 6.82%, and Airbus A330 with 2.27%.

Best airlines flying from Ireland to Colorado

Compare and see reviews for airlines that fly from Ireland to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom €392	Free Cancellation	Rating 7.0 762 reviews	Search Icelandair flights
American Airlines	PriceFrom €408	Free Cancellation	Rating 7.0 12,181 reviews	Search American Airlines flights
British Airways	PriceFrom €443	Free Cancellation	Rating 6.7 8,272 reviews	Search British Airways flights
Iberia	PriceFrom €465	Free Cancellation	Rating 7.0 3,243 reviews	Search Iberia flights
Aer Lingus	PriceFrom €495	Free Cancellation	Rating 7.3 1,850 reviews	Search Aer Lingus flights
United Airlines	PriceFrom €746	Free Cancellation	Rating 7.3 10,396 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Colorado?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Colorado from Ireland.

Can I find flights from Ireland to Colorado with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Colorado from Ireland with this policy.

How can momondo help me find flights from Ireland to Colorado?

Once you have performed a search for Ireland to Colorado flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ireland to Colorado right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Colorado, momondo offers a useful price alert feature which will track prices for flights to Colorado from Ireland and alert you when they change.