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Cheap flights from Ireland to Colorado from £360

DUB — DEN
4 Oct — 11 Oct1
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

Sat 21/1108:50 -
1 stop13h 20m
Sat 28/1117:01 -
1 stop12h 44m
Deal found 2/9£449
Mon 9/1108:45 -
1 stop13h 25m
Mon 23/1117:01 -
1 stop12h 34m
Deal found 1/9£450
Thu 12/1112:55 -
1 stop13h 58m
Tue 1/1217:01 -
1 stop19h 44m
Deal found 30/8£468
Tue 3/1112:55 -
1 stop13h 58m
Sun 8/1117:01 -
1 stop14h 54m
Deal found 3/9£470
Thu 12/1108:50 -
1 stop13h 20m
Tue 1/1212:21 -
2 stops16h 49m
Deal found 30/8£471
Mon 9/1112:55 -
1 stop13h 58m
Mon 23/1117:01 -
1 stop19h 44m
Deal found 31/8£474
Wed 4/1118:05 -
2 stops32h 48m
Sun 8/1117:01 -
1 stop19h 44m
Deal found 3/9£475
Tue 10/1118:05 -
2 stops32h 48m
Mon 23/1117:01 -
1 stop15h 24m
Deal found 31/8£479

Find flight deals from Ireland to Colorado

Round-trip from

£449

One-way from

£360

Popular in

July

Cheapest in

February

Average price

£441
British Airways
  • British Airways
  • 21/11-28/11
  • 2 total stops
  • 26h 04m total
  • Ireland to Colorado
Search Deals
1/12-31/12
  • 1/12-31/12
  • 1 total stop
  • 13h 20m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£106 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% 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

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 1/12

08:50-15:10

1 stop13h 20m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£360

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 1/12

18:00-15:10

1 stop28h 10m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£367

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 22/12

20:40-15:10

1 stop25h 30m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£367

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 27/10

20:40-16:10

1 stop25h 30m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£391

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 29/10

20:40-16:10

1 stop25h 30m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£391

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 24/10

18:45-16:10

1 stop28h 25m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£400
Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 23/10

10:30-16:25

1 stop12h 55m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£401

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 24/10

18:00-21:47

2 stops34h 47m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£435

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sun 29/11

20:40-21:47

2 stops32h 07m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£461

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 12/11

08:50-15:10

1 stop13h 20m

Denver Intl

Tue 1/12

12:21-12:10

2 stops16h 49m

£471

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 14 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 £342). Flying from Ireland to Colorado in July is currently the most expensive (average of £714). 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 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

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
1,745 reviews
Check prices

Crew

8.1

Overall

7.3

Food

6.7

Boarding

7.5

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Aer Lingus
7.3
Good
1,745 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Crew

8.1

Overall

7.3

Food

6.7

Boarding

7.5

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Icelandair
6.9
Okay
740 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Crew

8.1

Overall

7.3

Food

6.7

Boarding

7.5

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
British Airways
6.7
Okay
8,204 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Crew

8.1

Overall

7.3

Food

6.7

Boarding

7.5

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Related info for your journey

  • How popular is this Ireland to Colorado flight route?

    The Ireland to Colorado flight path was viewed by 24 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 £471, British Airways can have you in Colorado from Ireland in 13h 20m. Airlines will cover a distance of 4378 mi.

  • 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 £342). Flying from Ireland to Colorado in July is currently the most expensive (average of £714). 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£299Average£353FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£332Average£454FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£363Average£594FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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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!

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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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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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