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Cheap flights from Ireland to Colorado from £398

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
5 Jul — 12 Jul1
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 5 June 2026.

Thu 18/609:30
DUB
-
DEN
1 stop21h 47m
Finnair
Sat 27/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 2/6£398
Thu 18/605:55
DUB
-
DEN
2 stops16h 43m
Delta
Sat 27/612:12
DEN
-
DUB
2 stops14h 48m
Delta
Deal found 2/6£400
Sun 7/613:25
DUB
-
DEN
2 stops16h 16m
Delta
Sat 27/611:10
DEN
-
DUB
1 stop13h 45m
Delta
Deal found 31/5£401
Wed 17/611:10
DUB
-
DEN
2 stops19h 21m
Delta
Sun 21/607:30
DEN
-
DUB
2 stops17h 25m
Delta
Deal found 1/6£402
Thu 18/609:30
DUB
-
DEN
1 stop21h 47m
Iberia
Sat 27/620:00
DEN
-
DUB
Nonstop8h 45m
Iberia
Deal found 2/6£473
Thu 1/1010:30
DUB
-
DEN
1 stop12h 55m
British Airways
Wed 14/1018:35
DEN
-
DUB
1 stop30h 10m
British Airways
Deal found 4/6£508
Wed 7/1020:30
DUB
-
DEN
1 stop26h 55m
British Airways
Wed 21/1012:31
DEN
-
DUB
2 stops16h 34m
British Airways
Deal found 3/6£510
Wed 17/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Thu 25/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 4/6£512
Thu 18/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Wed 24/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 4/6£513
Thu 18/611:45
DUB
-
DEN
1 stop18h 14m
Multiple Airlines
Wed 24/617:45
DEN
-
DUB
1 stop11h 05m
Multiple Airlines
Deal found 4/6£517
Fri 12/612:40
DUB
-
DEN
1 stop13h 56m
Finnair
Sun 21/614:22
DEN
-
DUB
1 stop14h 28m
Finnair
Deal found 3/6£521

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 5 June 2026.

Round-trip from

£398

Popular in

August

Cheapest in

February

Average price

£645
Finnair
  • Finnair
  • 18/6-27/6
  • 2 total stops
  • 35h 53m 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 June 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 5 June 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

Thu 18/6

05:55-15:38

2 stops16h 43m

Denver Intl

Sat 27/6

12:12-10:00

2 stops14h 48m

£400

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 29/6

11:10-22:45

2 stops18h 35m

Denver Intl

Thu 9/7

00:59-10:00

1 stop26h 01m

£549

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 18/7

09:30-00:17

1 stop21h 47m

Denver Intl

Sat 25/7

12:39-09:45

1 stop14h 06m

£586
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 28/10

11:30-19:05

1 stop13h 35m

Denver Intl

Sun 8/11

15:40-10:15

1 stop11h 35m

£652

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 29/10

08:50-20:32

2 stops17h 42m

Denver Intl

Sat 7/11

17:25-17:45

1 stop17h 20m

£668

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 7/9

10:30-16:30

1 stop13h 00m

Denver Intl

Mon 28/9

18:40-18:40

1 stop17h 00m

£689

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 18/6

05:55-15:38

2 stops16h 43m

Denver Intl

Wed 24/6

17:40-18:25

1 stop17h 45m

£692

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 17/6

08:55-20:02

2 stops18h 07m

Denver Intl

Thu 25/6

05:40-07:55

2 stops19h 15m

£695
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 27/6

10:40-22:42

1 stop19h 02m

£412

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 27/7

10:40-22:41

1 stop19h 01m

£412

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 18 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 £287). Flying from Ireland to Colorado in July is currently the most expensive (average of £528). 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 5 June 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 44 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 5 June 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
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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
9,777 reviews
United Airlines
7.4
Good
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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
1,595 reviews
United Airlines
7.4
Good
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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
665 reviews
United Airlines
7.4
Good
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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
8,027 reviews
United Airlines
7.4
Good
9,777 reviews
Check prices

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

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 35 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 £400, Delta can have you in Colorado from Ireland in 16h 43m. 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 £287). Flying from Ireland to Colorado in July is currently the most expensive (average of £528). 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 5 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£301Average£360FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£334Average£555FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£363Average£464FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£365Average£583FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£650Average£696FlexibilityNo 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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