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Cheap flights from Dublin to Denver from £182

DUB — DEN
21 Sep — 28 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dublin to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Denver

Fri 28/815:25 -
Nonstop9h 50m
Sat 12/923:59 -
1 stop22h 16m
Deal found 21/8£458
Thu 26/1111:30 -
1 stop18h 21m
Thu 3/1215:40 -
1 stop11h 35m
Deal found 21/8£473
Thu 8/1012:35 -
1 stop18h 55m
Wed 21/1008:00 -
1 stop14h 10m
Deal found 20/8£525
Sat 5/909:40 -
2 stops32h 40m
Fri 11/916:40 -
1 stop13h 35m
Deal found 20/8£564
Sat 5/909:15 -
1 stop13h 25m
Fri 11/910:55 -
1 stop15h 20m
Deal found 20/8£568
Thu 8/1012:35 -
1 stop18h 55m
Sun 11/1006:30 -
1 stop17h 00m
Deal found 20/8£569
Mon 7/908:55 -
2 stops21h 39m
Mon 28/917:40 -
1 stop14h 45m
Deal found 17/8£585
Wed 2/909:15 -
1 stop13h 25m
Mon 14/917:55 -
1 stop17h 30m
Deal found 18/8£586

Find flight deals from Dublin to Denver

Round-trip from

£473

One-way from

£182

Popular in

August

Cheapest in

February

Average price

£740
Icelandair
  • Icelandair
  • 26/11-3/12
  • 2 total stops
  • 29h 56m total
  • Dublin to Denver
Search Deals
31/10
  • 31/10
  • 1 total stop
  • 23h 36m total
  • Dublin to Denver
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£71 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 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 Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 2/9

08:55-19:51

2 stops17h 56m

Denver Intl

Mon 14/9

17:55-15:25

1 stop14h 30m

£585

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 7/9

08:55-23:34

2 stops21h 39m

Denver Intl

Mon 28/9

06:15-09:15

2 stops20h 00m

£587

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Mon 12/10

10:40-18:25

1 stop38h 45m

Denver Intl

Tue 20/10

20:30-09:35

1 stop30h 05m

£594

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 11/11

11:30-18:00

1 stop13h 30m

Denver Intl

Mon 23/11

15:40-10:15

1 stop11h 35m

£628

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 14/1

11:30-18:00

1 stop13h 30m

Denver Intl

Mon 18/1

15:40-10:15

1 stop11h 35m

£635

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Tue 1/9

05:55-17:23

2 stops18h 28m

Denver Intl

Mon 14/9

08:45-09:15

2 stops17h 30m

£641

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 12/11

09:00-16:50

1 stop14h 50m

Denver Intl

Thu 26/11

09:48-07:30

1 stop14h 42m

£648

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Thu 26/11

05:45-15:59

2 stops17h 14m

Denver Intl

Thu 3/12

15:58-14:30

2 stops15h 32m

£651

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Sat 21/11

08:50-20:25

2 stops18h 35m

Denver Intl

Sat 28/11

06:45-08:00

2 stops18h 15m

£653

DublinDenver

DUB Dublin - DEN Denver Intl

DUBDEN

Dublin

Wed 11/11

12:05-18:17

1 stop13h 12m

Denver Intl

Sun 22/11

13:25-08:10

1 stop11h 45m

£656

Flights are sorted by cheapest return flights first.

Deals found on 21/8

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

Best time to book a flight from Dublin to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Dublin with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Dublin to Denver

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

The price you pay for your flight from Dublin to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Dublin to Denver (average of £339). Flying from Dublin to Denver in August is currently the most expensive (average of £740). 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 DEN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Denver as you normally would.

How much does it cost for a return flight from Dublin to Denver?

Airfare is below average for this route at the moment.

Dublin to Denver flights typically cost between £474 and £708 in November.
The cheapest return price found within the last 5 days was £473 on Multiple Airlines (26 Nov–3 Dec).

Reviews of airlines servicing Denver

Get a feel of what it's like to fly with Aer Lingus,Icelandair, andBritish Airways from Dublin to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

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
1,713 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

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
732 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

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
8,183 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

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 airports do I use to fly from Dublin to Denver?

    To fly from Dublin to Denver, you need to book a flight from Dublin (DUB) to Denver Intl (DEN). Nonstop flights to Denver Intl from Dublin take 14h 40m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Dublin to Denver Intl offered by 3 different airlines.

  • How popular is this Dublin to Denver flight route?

    Within the past month, 25 users have taken a look at flights from Dublin to Denver Intl.

  • How long is the flight from Dublin to Denver?

    Delta and Scandinavian Airlines can get you from Dublin to Denver in just under 17h 56m. Your travel time can differ by up to 16h 31m. There are 4378 mi between Dublin and Denver. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Dublin to Denver round-trip?

    British Airways, at £296, was found to be the cheapest airline from Dublin to Denver.Alternate airlines flying return to your destination include Icelandair and Aer Lingus. British Airways is currently priced 44% below the average price you’ll pay for this route.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dublin to Denver on time: American Airlines (81%), Aer Lingus (81%), Iberia (81%).

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Dublin to Denver (average of £339). Flying from Dublin to Denver in August is currently the most expensive (average of £740). 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 Denver

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£296Average£349FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£329Average£449FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£359Average£588FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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