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Cheap flights from Dublin to Denver from £279

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
9 Aug — 16 Aug1
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
Explore the most affordable flight options available from Dublin to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 July 2026.

Mon 24/811:30
DUB
-
DEN
1 stop18h 28m
Multiple Airlines
Mon 31/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 9/7£415
Wed 19/810:40
DUB
-
DEN
1 stop29h 23m
Multiple Airlines
Sun 30/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 5/7£416
Thu 20/809:40
DUB
-
DEN
2 stops56h 40m
Multiple Airlines
Sun 30/816:40
DEN
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 7/7£465
Fri 28/810:40
DUB
-
DEN
1 stop19h 02m
JetBlue
Mon 31/814:04
DEN
-
DUB
1 stop11h 56m
JetBlue
Deal found 8/7£517

Find flight deals from Dublin to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 July 2026.

Round-trip from

£415

One-way from

£279

Popular in

August

Cheapest in

February

Average price

£718
Icelandair
  • Icelandair
  • 24/8-31/8
  • 2 total stops
  • 32h 03m total
  • Dublin to Denver
Search Deals
JetBlue
  • JetBlue
  • 3/9
  • 1 total stop
  • 19h 02m total
  • Dublin to Denver
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£76 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin to Denver 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 10 July 2026.
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 - DEN

DUBDEN

Dublin

Fri 2/10

08:35-16:25

1 stop14h 50m

Denver Intl

Fri 16/10

18:35-19:25

1 stop17h 50m

£553

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 30/9

08:35-16:30

1 stop14h 55m

Denver Intl

Fri 9/10

18:35-17:50

1 stop16h 15m

£556
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

£556

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 1/9

09:40-23:59

2 stops21h 19m

Denver Intl

Tue 6/10

18:35-18:50

1 stop17h 15m

£562

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 18/9

09:40-00:17

2 stops21h 37m

Denver Intl

Fri 25/9

18:40-19:25

1 stop17h 45m

£562

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 28/8

09:40-23:59

2 stops21h 19m

Denver Intl

Fri 11/9

10:47-09:45

1 stop15h 58m

£566

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 29/8

18:00-17:37

2 stops30h 37m

Denver Intl

Fri 11/9

18:40-17:50

1 stop16h 10m

£569

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 29/8

18:00-17:37

2 stops30h 37m

Denver Intl

Sat 12/9

10:47-09:45

1 stop15h 58m

£576

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 29/8

10:15-22:44

2 stops19h 29m

Denver Intl

Fri 11/9

06:00-18:20

2 stops29h 20m

£578
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 4/9

10:40-22:42

1 stop19h 02m

£279

Flights are sorted by cheapest return flights first.

Deals found on 8/7

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
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 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 £345). Flying from Dublin to Denver in August is currently the most expensive (average of £774). 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?

Find hourly flight availability from Dublin to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 July 2026.

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?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated 10 July 2026.
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
1,654 reviews
Check prices

Overall

7.3

Boarding

7.4

Comfort

7.2

Food

6.6

Entertainment

7.0

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
1,654 reviews
Aer Lingus
7.3
Good
1,654 reviews
Check prices

Overall

7.3

Boarding

7.4

Comfort

7.2

Food

6.6

Entertainment

7.0

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
7.0
Good
702 reviews
Aer Lingus
7.3
Good
1,654 reviews
Check prices

Overall

7.3

Boarding

7.4

Comfort

7.2

Food

6.6

Entertainment

7.0

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
8,107 reviews
Aer Lingus
7.3
Good
1,654 reviews
Check prices

Overall

7.3

Boarding

7.4

Comfort

7.2

Food

6.6

Entertainment

7.0

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

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

  • 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 9h 50m 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, 29 users have taken a look at flights from Dublin to Denver Intl.

  • How long is the flight from Dublin to Denver?

    JetBlue can get you from Dublin to Denver in just under 18h 28m. Your travel time can differ by up to . There are 4378 mi between Dublin and Denver.

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

    British Airways, at £302, 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 (88%), Aer Lingus (88%), Iberia (88%).

  • 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 £345). Flying from Dublin to Denver in August is currently the most expensive (average of £774). 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 Denver

Discover the top 3 airlines that operate flights from Dublin to Denver. 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 10 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£302Average£356FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£334Average£556FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£365Average£600FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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How does Cheapflights help users find flights from Dublin to Denver?

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Why should you use Cheapflights to find cheap flight tickets from Dublin to Denver?

Cheapflights simply makes it quick and affordable to book flights from Dublin to Denver by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Dublin to Denver with no change fees?

Need flexible booking options for your flight to Denver from Dublin? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Dublin to Denver become cheaper?

Yes, Cheapflights offers price alerts on Dublin to Denver flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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