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Cheap flights from Ireland to Colorado from £354

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
15 Jan — 22 Jan1
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 16 December 2025.

Wed 24/1205:55DUB - DEN
2 stops21h 13mDelta
Thu 1/106:00DEN - DUB
1 stop18h 45mDelta
Deal found 16/12£648
Wed 31/1213:25DUB - DEN
2 stops27h 04mDelta
Sun 18/111:33DEN - DUB
2 stops21h 12mDelta
Deal found 14/12£661
Mon 15/1209:00DUB - DEN
1 stop14h 40mUnited Airlines
Mon 29/1210:15DEN - DUB
2 stops14h 15mUnited Airlines
Deal found 14/12£701
Wed 31/1217:20DUB - DEN
1 stop27h 20mLufthansa
Sun 18/111:20DEN - DUB
1 stop13h 50mLufthansa
Deal found 14/12£751
Mon 15/1205:55DUB - DEN
2 stops20h 06mDelta
Mon 29/1206:45DEN - DUB
2 stops18h 20mDelta
Deal found 14/12£768
Sun 14/1213:25DUB - DEN
2 stops17h 20mDelta
Thu 18/1205:45DEN - DUB
1 stop19h 00mDelta
Deal found 14/12£799
Sun 14/1212:05DUB - DEN
1 stop19h 10mUnited Airlines
Thu 18/1216:05DEN - DUB
1 stop11h 15mUnited Airlines
Deal found 14/12£821
Wed 24/1211:30DUB - DEN
2 stops18h 29mMultiple Airlines
Thu 1/110:20DEN - DUB
3 stops16h 55mMultiple Airlines
Deal found 16/12£1,863

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 16 December 2025.

Round-trip from

£482

One-way from

£354

Popular in

June

Cheapest in

September

Average price

£588
Scandinavian Airlines
  • Scandinavian Airlines
  • 29/1-5/2
  • 4 total stops
  • 78h 25m total
  • Ireland to Colorado
Search Deals
JetBlue
  • JetBlue
  • 29/4
  • 1 total stop
  • 17h 59m total
  • Ireland to Colorado
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 16 December 2025.
Use the filters below to find and compare flights from Ireland to Colorado that are best for you.

Fly from

Ireland

Fly to

Colorado

Route

Depart

Return

Price

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 1/2

10:10-22:50

2 stops43h 40m

Denver Intl

Thu 5/2

12:00-09:25

2 stops38h 25m

£495

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 1/5

11:45-23:01

1 stop18h 16m

Denver Intl

Tue 12/5

09:18-08:20

1 stop16h 02m

£511

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 1/5

11:45-23:01

1 stop18h 16m

Denver Intl

Fri 15/5

11:05-09:00

1 stop14h 55m

£512

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 21/1

10:40-17:35

1 stop37h 55m

Denver Intl

Sat 31/1

19:20-09:40

1 stop31h 20m

£579

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 28/1

05:10-13:40

1 stop15h 30m

Denver Intl

Wed 4/2

17:42-17:10

2 stops16h 28m

£590

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 14/1

07:35-15:30

1 stop14h 55m

Denver Intl

Wed 28/1

15:17-14:05

2 stops15h 48m

£591

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 13/1

06:40-18:13

2 stops18h 33m

Denver Intl

Tue 20/1

17:25-14:20

1 stop13h 55m

£595

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 12/1

11:30-22:34

2 stops18h 04m

Denver Intl

Mon 2/2

17:25-15:20

1 stop14h 55m

£597

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 4/5

11:45-23:01

1 stop18h 16m

£354

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 6/5

10:40-21:39

1 stop17h 59m

£354

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 16 results
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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, April is the cheapest month in which you can book a flight from Ireland to Colorado (average of £322). Flying from Ireland to Colorado in June is currently the most expensive (average of £531). 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 16 December 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 24% on flights from Ireland to Colorado by exploring options for tickets in the afternoon.

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 16 December 2025.
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
9,094 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,094 reviews
United Airlines
7.4
Good
9,094 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Aer Lingus
7.2
Good
1,392 reviews
United Airlines
7.4
Good
9,094 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
Icelandair
7.0
Good
590 reviews
United Airlines
7.4
Good
9,094 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
British Airways
6.7
Okay
7,580 reviews
United Airlines
7.4
Good
9,094 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 79 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 £511, Scandinavian Airlines can have you in Colorado from Ireland in 18h 16m. 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, April is the cheapest month in which you can book a flight from Ireland to Colorado (average of £322). Flying from Ireland to Colorado in June is currently the most expensive (average of £531). 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

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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 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£320Average£457FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£413Average£615FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£436Average£583FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£483Average£652FlexibilityNo 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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