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Cheap flights from Ireland to Colorado from £279

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
10 Aug — 17 Aug1
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 11 July 2026.

Mon 24/811:30
DUB
-
DEN
1 stop18h 28m
Multiple Airlines
Mon 31/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 9/7£415
Wed 26/809:40
DUB
-
DEN
3 stops32h 40m
Multiple Airlines
Sun 30/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 11/7£418
Thu 20/809:40
DUB
-
DEN
2 stops56h 40m
Multiple Airlines
Sun 30/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 7/7£464
Fri 28/810:40
DUB
-
DEN
1 stop19h 02m
JetBlue
Mon 31/814:04
DEN
-
DUB
1 stop11h 56m
JetBlue
Deal found 8/7£516
Tue 11/810:40
DUB
-
DEN
1 stop19h 02m
JetBlue
Tue 18/823:37
DEN
-
DUB
1 stop25h 43m
JetBlue
Deal found 11/7£528

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 11 July 2026.

Round-trip from

£415

One-way from

£279

Popular in

August

Cheapest in

February

Average price

£704
Icelandair
  • Icelandair
  • 24/8-31/8
  • 2 total stops
  • 32h 03m total
  • Ireland to Colorado
Search Deals
JetBlue
  • JetBlue
  • 4/9
  • 1 total stop
  • 19h 02m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 11 July 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 28/8

09:30-23:59

1 stop21h 29m

Denver Intl

Fri 11/9

18:40-17:50

1 stop16h 10m

£552
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 7/10

08:35-16:25

1 stop14h 50m

Denver Intl

Fri 16/10

18:35-19:25

1 stop17h 50m

£554

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 25/8

09:40-23:59

2 stops21h 19m

Denver Intl

Tue 1/9

18:40-17:00

1 stop15h 20m

£558

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 16/9

09:40-00:17

2 stops21h 37m

Denver Intl

Thu 24/9

18:40-17:55

1 stop16h 15m

£561

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 28/8

09:40-23:59

2 stops21h 19m

Denver Intl

Fri 11/9

10:47-09:45

1 stop15h 58m

£566

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 4/9

09:40-23:59

2 stops21h 19m

Denver Intl

Fri 18/9

10:47-09:45

1 stop15h 58m

£566

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 29/8

18:00-17:37

2 stops30h 37m

Denver Intl

Fri 11/9

18:40-17:50

1 stop16h 10m

£569

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 29/8

18:00-17:37

2 stops30h 37m

Denver Intl

Sat 12/9

10:47-09:45

1 stop15h 58m

£575
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 4/9

10:40-22:42

1 stop19h 02m

£279

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 3/9

10:40-22:42

1 stop19h 02m

£279

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 20 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 £288). Flying from Ireland to Colorado in July is currently the most expensive (average of £563). 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 11 July 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 11 July 2026.
Read through reviews of airlines operating flights from Ireland to Colorado, such as United Airlines,Aer Lingus, andIcelandair. 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
9,978 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,978 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.3
Good
1,657 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Icelandair
7.0
Good
704 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
British Airways
6.7
Okay
8,107 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Overall

7.4

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 29 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 £288). Flying from Ireland to Colorado in July is currently the most expensive (average of £563). 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 858,174 searches. Data last updated 11 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£301Average£355FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£334Average£556FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£365Average£599FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£674Average£737FlexibilityNo 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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