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Cheap flights from Dublin to Colorado from £278

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dublin to Colorado

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Colorado
Explore the most affordable flight options available from Dublin to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Fri 4/911:30
DUB
-
DEN
1 stop32h 41m
JetBlue
Sun 6/923:37
DEN
-
DUB
1 stop25h 43m
JetBlue
Deal found 25/7£507
Thu 3/911:30
DUB
-
DEN
1 stop18h 28m
JetBlue
Tue 8/923:54
DEN
-
DUB
1 stop26h 06m
JetBlue
Deal found 22/7£512
Thu 27/811:30
DUB
-
DEN
1 stop18h 28m
JetBlue
Mon 31/814:04
DEN
-
DUB
1 stop11h 56m
JetBlue
Deal found 24/7£518
Fri 4/910:40
DUB
-
DEN
2 stops55h 40m
Multiple Airlines
Sun 6/916:40
DEN
-
DUB
2 stops18h 30m
Multiple Airlines
Deal found 25/7£528
Fri 21/811:30
DUB
-
DEN
1 stop18h 28m
JetBlue
Fri 28/813:55
DEN
-
DUB
1 stop11h 25m
JetBlue
Deal found 24/7£549
Wed 26/809:30
DUB
-
DEN
1 stop21h 29m
Multiple Airlines
Sun 30/818:40
DEN
-
DUB
1 stop17h 55m
Multiple Airlines
Deal found 24/7£558
Fri 28/809:30
DUB
-
DEN
1 stop21h 29m
Multiple Airlines
Fri 11/918:40
DEN
-
DUB
1 stop16h 10m
Multiple Airlines
Deal found 21/7£560
Wed 7/1010:30
DUB
-
DEN
1 stop12h 55m
Multiple Airlines
Fri 16/1018:35
DEN
-
DUB
1 stop17h 50m
Multiple Airlines
Deal found 22/7£561

Find flight deals from Dublin to Colorado

Keep the following information in mind while searching for Dublin to Colorado flight deals. Data was last updated 25 July 2026.

Round-trip from

£507

One-way from

£278

Popular in

August

Cheapest in

February

Average price

£723

Good round-trip deal

£619 or less
JetBlue
  • JetBlue
  • 4/9-6/9
  • 2 total stops
  • 58h 24m total
  • Dublin to Colorado
Search Deals
JetBlue
  • JetBlue
  • 2/9
  • 1 total stop
  • 33h 04m total
  • Dublin to Colorado
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£68 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 July 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Colorado.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin 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 25 July 2026.
Use the filters below to find and compare flights from Dublin to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 27/8

11:30-22:58

1 stop18h 28m

Denver Intl

Mon 31/8

14:04-09:00

1 stop11h 56m

£521

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 28/8

09:30-23:59

1 stop21h 29m

Denver Intl

Fri 11/9

18:40-19:25

1 stop17h 45m

£558

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 26/8

09:30-23:59

1 stop21h 29m

Denver Intl

Sun 30/8

18:40-19:35

1 stop17h 55m

£559

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 4/9

09:30-23:59

1 stop21h 29m

Denver Intl

Sun 20/9

18:40-19:35

1 stop17h 55m

£560

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 2/10

08:35-16:25

1 stop14h 50m

Denver Intl

Fri 9/10

18:35-19:25

1 stop17h 50m

£563

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 3/9

09:40-23:59

2 stops21h 19m

Denver Intl

Tue 8/9

18:40-19:30

1 stop17h 50m

£566

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 22/8

11:30-22:58

1 stop18h 28m

Denver Intl

Sat 5/9

14:01-09:00

1 stop11h 59m

£590

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 2/9

09:40-23:59

2 stops21h 19m

Denver Intl

Wed 30/9

14:27-17:15

2 stops19h 48m

£597

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 21/11

15:10-15:10

1 stop31h 00m

Denver Intl

Sat 28/11

17:01-12:45

1 stop12h 44m

£609
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 2/9

10:40-12:44

1 stop33h 04m

£278

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Dublin to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Dublin 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 Dublin to Colorado

What is the cheapest month to book a flight from Dublin to Colorado?

Currently, February is the cheapest month in which you can book a flight from Dublin to Colorado (average of £347). Flying from Dublin to Colorado in August is currently the most expensive (average of £729). 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 DUB to CO?

Find hourly flight availability from Dublin 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 25 July 2026.

When flying from Dublin 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 much does it cost for a return flight from Dublin to Colorado?

Airfare is below average for this route at the moment.
Dublin to Colorado flights typically cost between £635 and £835 in September.
The cheapest return price found within the last 5 days was £507 on JetBlue (4 Sept–6 Sept).

How far ahead should I book a flight from Dublin to Colorado?

The price you pay for your flight from Dublin to Colorado may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 25 July 2026.
See what other customers who have flown with Aer Lingus,Icelandair, andBritish Airways from Dublin to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Boarding

7.4

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,679 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Boarding

7.4

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Icelandair
7.0
Good
715 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Boarding

7.4

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
British Airways
6.7
Okay
8,132 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Boarding

7.4

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dublin to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dublin to Colorado?

    For a flight from Dublin to Colorado, you will be flying from Dublin. Dublin (DUB) is just 5.7 mi from the center of the city.

  • How popular is this Dublin to Colorado flight route?

    This flight path from Dublin to Colorado was viewed by 27 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 Dublin to Colorado?

    JetBlue can get you from Dublin to Colorado in just under 18h 28m. Your travel time can differ by up to . The distance from Dublin to Colorado is about 4378 mi.

  • What are the most reliable airlines from Dublin to Colorado?

    No one likes to see their flight delayed. When booking a flight from Dublin to Colorado consider choosing American Airlines (83%), Aer Lingus (83%) or Iberia (83%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Dublin to Colorado that include hotel bookings?

    Yes. In addition to deals on Dublin to Colorado flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Colorado.

  • Can I find deals for business class flights from Dublin to Colorado?

    Yes. Cheapflights offers flight deals from Dublin 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 Dublin to Colorado?

    Currently, February is the cheapest month in which you can book a flight from Dublin to Colorado (average of £347). Flying from Dublin to Colorado in August is currently the most expensive (average of £729). 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

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Top 3 airlines flying from Dublin to Colorado

Discover the top 3 airlines that operate flights from Dublin 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 25 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£303Average£358FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£336Average£559FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£368Average£603FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Colorado flexibly with Cheapflights today.

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