Find flights
When to book
Airlines
FAQs

Cheap flights from Ireland to Colorado from £368

DUB — DEN
15 Oct — 22 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

Sun 1/1117:55 -
1 stop27h 35m
Sat 14/1116:15 -
1 stop17h 55m
Deal found 15/9£450
Thu 22/1010:00 -
1 stop12h 49m
Thu 5/1112:15 -
1 stop13h 30m
Deal found 14/9£467
Tue 20/1005:55 -
2 stops18h 01m
Tue 27/1011:07 -
2 stops15h 53m
Deal found 15/9£469
Sat 21/1105:45 -
2 stops21h 26m
Sat 28/1107:05 -
1 stop17h 40m
Deal found 14/9£470
Fri 30/1006:00 -
2 stops17h 32m
Fri 6/1111:07 -
2 stops15h 18m
Deal found 15/9£470
Wed 7/1005:55 -
2 stops21h 11m
Fri 27/1107:05 -
2 stops18h 40m
Deal found 15/9£471
Sat 21/1115:10 -
1 stop31h 00m
Sat 28/1117:01 -
1 stop12h 44m
Deal found 14/9£472
Mon 21/1208:45 -
1 stop13h 25m
Thu 7/117:05 -
1 stop13h 55m
Deal found 12/9£473
Tue 6/1008:55 -
2 stops18h 11m
Tue 13/1012:15 -
1 stop14h 45m
Deal found 12/9£473
Thu 8/1005:55 -
2 stops16h 54m
Thu 15/1013:25 -
2 stops16h 15m
Deal found 11/9£475
Mon 28/909:15 -
1 stop13h 25m
Mon 12/1011:07 -
2 stops14h 13m
Deal found 12/9£476

Find flight deals from Ireland to Colorado

Round-trip from

£450

One-way from

£368

Popular in

July

Cheapest in

February

Average price

£565
Lufthansa
  • Lufthansa
  • 1/11-14/11
  • 2 total stops
  • 45h 30m total
  • Ireland to Colorado
Search Deals
British Airways
  • British Airways
  • 25/1-31/12
  • 1 total stop
  • 35h 20m 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

Mon 25/1

10:50-15:10

1 stop35h 20m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£368

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sun 29/11

13:15-23:35

1 stop17h 20m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£450

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 20/10

05:55-16:56

2 stops18h 01m

Denver Intl

Tue 27/10

11:07-09:00

2 stops15h 53m

£469

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

Tue 13/10

05:55-15:49

2 stops16h 54m

Denver Intl

Tue 20/10

10:30-10:00

2 stops16h 30m

£471

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

Thu 29/10

06:00-23:44

2 stops23h 44m

Denver Intl

Thu 5/11

11:07-09:00

2 stops14h 53m

£473

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 19/10

05:30-11:42

2 stops37h 12m

Denver Intl

Wed 31/12

00:00-08:00

Nonstop0h 00m

£493

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

£527

Flights are sorted by cheapest return flights first.

Deals found on 10/9

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 £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 88 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
1,759 reviews
Check prices

Crew

8.1

Boarding

7.5

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

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
1,759 reviews
Aer Lingus
7.3
Good
1,759 reviews
Check prices

Crew

8.1

Boarding

7.5

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

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
743 reviews
Aer Lingus
7.3
Good
1,759 reviews
Check prices

Crew

8.1

Boarding

7.5

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

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
8,220 reviews
Aer Lingus
7.3
Good
1,759 reviews
Check prices

Crew

8.1

Boarding

7.5

Entertainment

7.0

Food

6.7

Comfort

7.2

Overall

7.3

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 22 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 £469, Delta can have you in Colorado from Ireland in 18h 01m. 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£300Average£354FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£332Average£454FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£363Average£612FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.