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Cheap flights from Ireland to Colorado from £387

DUB — DEN
21 Oct — 28 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 26/909:15 -
1 stop13h 25m
Sat 10/1017:40 -
1 stop31h 40m
Deal found 17/9£458
Mon 2/1105:45 -
2 stops21h 28m
Sun 15/1111:08 -
2 stops14h 52m
Deal found 20/9£467
Tue 3/1105:45 -
2 stops18h 47m
Tue 10/1107:05 -
1 stop18h 40m
Deal found 19/9£469
Sat 26/908:55 -
2 stops18h 10m
Sat 10/1017:40 -
1 stop14h 45m
Deal found 18/9£470
Mon 28/908:55 -
2 stops18h 10m
Tue 13/1010:41 -
2 stops16h 19m
Deal found 18/9£472
Wed 7/1005:55 -
1 stop16h 45m
Fri 27/1106:05 -
1 stop18h 50m
Deal found 18/9£473

Find flight deals from Ireland to Colorado

Round-trip from

£467

One-way from

£387

Popular in

July

Cheapest in

February

Average price

£570
Delta
  • Delta
  • 2/11-15/11
  • 4 total stops
  • 36h 20m total
  • Ireland to Colorado
Search Deals
Delta
  • Delta
  • 1/1-31/12
  • 2 total stops
  • 20h 50m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£12 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

Fri 1/1

05:45-19:35

2 stops20h 50m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£387

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 12/3

05:45-15:56

2 stops17h 11m

Denver Intl

Mon 15/3

11:40-09:45

1 stop16h 05m

£470

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 12/3

05:45-15:56

2 stops17h 11m

Denver Intl

Mon 15/3

16:00-12:40

2 stops14h 40m

£471

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 12/3

13:25-00:23

2 stops17h 58m

Denver Intl

Mon 15/3

11:40-09:45

1 stop16h 05m

£472

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 22/12

16:20-15:10

1 stop29h 50m

Denver Intl

Mon 11/1

17:01-09:40

1 stop33h 39m

£473

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Fri 12/3

08:50-15:10

1 stop13h 20m

Denver Intl

Mon 15/3

18:01-17:05

1 stop17h 04m

£473

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

£520

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 24/10

08:55-20:13

2 stops18h 18m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£528

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 14/10

05:55-20:06

2 stops21h 11m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£531
Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 15/10

08:55-20:06

2 stops18h 11m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£531

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 12 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 £345). Flying from Ireland to Colorado in July is currently the most expensive (average of £720). 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 87 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
1,777 reviews
Check prices

Boarding

7.4

Food

6.7

Overall

7.3

Comfort

7.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
Aer Lingus
7.3
Good
1,777 reviews
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Food

6.7

Overall

7.3

Comfort

7.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
Icelandair
6.9
Okay
747 reviews
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Food

6.7

Overall

7.3

Comfort

7.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight
British Airways
6.7
Okay
8,225 reviews
Aer Lingus
7.3
Good
1,777 reviews
Check prices

Boarding

7.4

Food

6.7

Overall

7.3

Comfort

7.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michael,Sept 2026

DUB - JFK

Food and service was great. Wish the USB on the planes worked so I could charge and use my phone on the flight

Related info for your journey

  • How popular is this Ireland to Colorado flight route?

    The Ireland to Colorado flight path was viewed by 19 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, KLM can have you in Colorado from Ireland in 17h 11m. 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 £345). Flying from Ireland to Colorado in July is currently the most expensive (average of £720). 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£302Average£361FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£335Average£458FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£366Average£602FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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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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