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Cheap flights from Ireland to Colorado from £346

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
18 Jun — 25 Jun1
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
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 19 May 2026.

Mon 22/609:30
DUB
-
DEN
1 stop21h 47m
Finnair
Mon 29/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 15/5£389
Fri 12/609:30
DUB
-
DEN
1 stop21h 47m
Finnair
Tue 23/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 19/5£389
Mon 8/609:30
DUB
-
DEN
1 stop21h 47m
Multiple Airlines
Mon 22/618:35
DEN
-
DUB
1 stop17h 05m
Multiple Airlines
Deal found 17/5£392
Wed 17/612:40
DUB
-
DEN
1 stop13h 56m
Multiple Airlines
Mon 22/618:35
DEN
-
DUB
1 stop18h 00m
Multiple Airlines
Deal found 19/5£395
Thu 11/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Thu 25/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 16/5£396
Mon 15/609:30
DUB
-
DEN
1 stop21h 47m
Multiple Airlines
Mon 22/618:35
DEN
-
DUB
1 stop18h 00m
Multiple Airlines
Deal found 17/5£398
Mon 1/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Mon 15/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 16/5£398
Thu 11/605:55
DUB
-
DEN
2 stops16h 43m
KLM
Thu 25/612:12
DEN
-
DUB
1 stop12h 43m
KLM
Deal found 16/5£399
Tue 16/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Tue 23/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 19/5£400
Fri 5/613:25
DUB
-
DEN
2 stops16h 15m
Delta
Sun 7/607:15
DEN
-
DUB
1 stop18h 30m
Delta
Deal found 18/5£401
Sun 7/606:00
DUB
-
DEN
1 stop16h 40m
Delta
Sat 27/605:45
DEN
-
DUB
1 stop20h 00m
Delta
Deal found 18/5£401

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 19 May 2026.

Round-trip from

£389

One-way from

£346

Popular in

August

Cheapest in

February

Average price

£523
Finnair
  • Finnair
  • 22/6-29/6
  • 2 total stops
  • 35h 53m total
  • Ireland to Colorado
Search Deals
JetBlue
  • JetBlue
  • 9/6
  • 1 total stop
  • 18h 16m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£70 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 19 May 2026.
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

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 19/6

09:30-00:17

1 stop21h 47m

Denver Intl

Fri 26/6

14:22-11:50

1 stop14h 28m

£395

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 18/6

12:40-19:36

1 stop13h 56m

Denver Intl

Sat 27/6

12:39-09:45

1 stop14h 06m

£396

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 15/6

09:30-00:17

1 stop21h 47m

Denver Intl

Mon 22/6

18:35-19:35

1 stop18h 00m

£398

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 19/6

11:10-20:02

2 stops15h 52m

Denver Intl

Thu 25/6

00:59-10:00

1 stop26h 01m

£401

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 22/6

11:10-23:31

2 stops19h 21m

Denver Intl

Mon 29/6

17:40-15:25

1 stop14h 45m

£401

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 16/6

05:55-17:39

2 stops18h 44m

Denver Intl

Tue 23/6

05:40-07:55

2 stops19h 15m

£401
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 7/6

09:15-15:40

1 stop13h 25m

Denver Intl

Sat 27/6

11:23-08:45

1 stop14h 22m

£401

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 12/6

05:55-15:40

1 stop16h 45m

Denver Intl

Tue 23/6

05:40-07:55

2 stops19h 15m

£402
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 9/6

10:40-21:35

1 stop17h 55m

£401

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 8/6

10:40-21:35

1 stop17h 55m

£403

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 19 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
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, May is the cheapest month in which you can book a flight from Ireland to Colorado (average of £289). Flying from Ireland to Colorado in July is currently the most expensive (average of £520). 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 19 May 2026.

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 43 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

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 19 May 2026.
Read through reviews of airlines operating flights from Ireland to Colorado, such as United Airlines,Aer Lingus, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,735 reviews
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Aer Lingus
7.3
Good
1,571 reviews
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,646 reviews
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Icelandair
7.0
Good
656 reviews
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,989 reviews
United Airlines
7.4
Good
9,735 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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?

    The Ireland to Colorado flight path was viewed by 36 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 £401, Finnair can have you in Colorado from Ireland in 15h 52m. 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, May is the cheapest month in which you can book a flight from Ireland to Colorado (average of £289). Flying from Ireland to Colorado in July is currently the most expensive (average of £520). 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 858,174 searches. Data last updated 19 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£302Average£393FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£337Average£562FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£365Average£466FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£367Average£603FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£653Average£699FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to Colorado?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Colorado from Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ireland to Colorado?

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.

Can Cheapflights notify me if prices for flights from Ireland to Colorado become cheaper?

Of course! You can now track prices for flights from Ireland to Colorado and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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