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Cheap flights from Dublin to Colorado from £396

DUB — DEN
29 Sep — 6 Oct1
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

Wed 2/1209:00 -
1 stop13h 10m
Thu 10/1217:05 -
1 stop13h 55m
Deal found 29/8£396
Wed 2/1209:00 -
1 stop13h 10m
Fri 11/1217:01 -
1 stop12h 04m
Deal found 27/8£451
Sat 21/1115:10 -
1 stop31h 00m
Sat 28/1117:01 -
1 stop12h 44m
Deal found 29/8£472
Mon 9/1112:55 -
1 stop13h 58m
Mon 23/1117:01 -
1 stop19h 44m
Deal found 28/8£473
Tue 17/1111:00 -
2 stops18h 54m
Tue 1/1212:21 -
2 stops14h 19m
Deal found 27/8£477
Mon 9/1112:55 -
1 stop13h 58m
Mon 23/1117:01 -
2 stops32h 59m
Deal found 27/8£491
Wed 2/1211:30 -
2 stops17h 27m
Fri 11/1212:26 -
2 stops13h 04m
Deal found 27/8£493
Thu 22/1009:40 -
2 stops20h 18m
Wed 4/1117:01 -
1 stop12h 14m
Deal found 28/8£498
Mon 19/1010:30 -
2 stops19h 06m
Wed 11/1112:08 -
2 stops17h 07m
Deal found 29/8£501
Mon 19/1009:40 -
2 stops20h 12m
Tue 10/1117:01 -
1 stop16h 54m
Deal found 29/8£502
Mon 19/1008:30 -
2 stops19h 16m
Sat 7/1112:24 -
2 stops14h 31m
Deal found 27/8£502

Find flight deals from Dublin to Colorado

Round-trip from

£396

Popular in

July

Cheapest in

February

Average price

£705
British Airways
  • British Airways
  • 2/12-10/12
  • 2 total stops
  • 27h 05m total
  • Dublin 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 August 2026
Search Deals

Cheapflights Fare Finder

 
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

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 14/1

20:40-15:10

1 stop25h 30m

Denver Intl

Mon 18/1

15:09-15:25

2 stops17h 16m

£470

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 21/11

15:10-15:10

1 stop31h 00m

Denver Intl

Sat 28/11

17:01-12:45

1 stop12h 44m

£472
Fastest return journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 20/10

10:30-20:40

2 stops17h 10m

Denver Intl

Tue 10/11

12:24-09:40

2 stops14h 16m

£502

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 19/10

08:30-20:46

2 stops19h 16m

Denver Intl

Sat 7/11

12:24-09:55

2 stops14h 31m

£502

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 20/10

10:30-22:52

2 stops19h 22m

Denver Intl

Tue 27/10

12:17-09:40

2 stops15h 23m

£522
Cheapest one-way

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 19/9

17:15-18:25

1 stop32h 10m

£611

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 13/10

06:00-22:50

2 stops23h 50m

£705
Fastest single journey

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 1/12

09:30-23:14

3 stops20h 44m

£889

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Sorted by cheapest first

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

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 £341). Flying from Dublin to Colorado in July is currently the most expensive (average of £712). 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?

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 typical for this route at the moment.
Dublin to Colorado flights typically cost between £346 and £564 in December.
The cheapest return price found within the last 5 days was £396 on British Airways (2 Dec–10 Dec).

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

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
1,732 reviews
Check prices

Food

6.7

Boarding

7.5

Entertainment

7.0

Overall

7.3

Comfort

7.2

Crew

8.1

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
1,732 reviews
Aer Lingus
7.3
Good
1,732 reviews
Check prices

Food

6.7

Boarding

7.5

Entertainment

7.0

Overall

7.3

Comfort

7.2

Crew

8.1

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
6.9
Okay
740 reviews
Aer Lingus
7.3
Good
1,732 reviews
Check prices

Food

6.7

Boarding

7.5

Entertainment

7.0

Overall

7.3

Comfort

7.2

Crew

8.1

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
8,195 reviews
Aer Lingus
7.3
Good
1,732 reviews
Check prices

Food

6.7

Boarding

7.5

Entertainment

7.0

Overall

7.3

Comfort

7.2

Crew

8.1

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

  • 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 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 Dublin to Colorado?

    British Airways can get you from Dublin to Colorado in just under 25h 30m. 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 (81%), Aer Lingus (81%) or Iberia (81%) 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 £341). Flying from Dublin to Colorado in July is currently the most expensive (average of £712). 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 Dublin to Colorado

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£299Average£352FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£331Average£453FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£362Average£593FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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