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Cheap flights from Dublin to Denver from £282

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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
9 Jun — 16 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Denver Intl are usually found in February or April, booked 52 days in advance, depart on a Monday or Friday and return on a Monday

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 May 2026.

Mon 7/910:30
DUB
-
DEN
1 stop13h 00m
British Airways
Mon 28/918:40
DEN
-
DUB
1 stop12h 50m
British Airways
Deal found 8/5£390
Mon 18/509:30
DUB
-
DEN
1 stop20h 15m
Finnair
Mon 1/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 6/5£393
Mon 18/509:30
DUB
-
DEN
1 stop20h 15m
Finnair
Wed 27/514:21
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 5/5£393
Sun 17/509:30
DUB
-
DEN
1 stop21h 36m
British Airways
Sat 6/608:48
DEN
-
DUB
1 stop14h 42m
British Airways
Deal found 9/5£401
Sun 7/609:30
DUB
-
DEN
1 stop21h 47m
Finnair
Sat 27/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 8/5£401
Mon 18/512:40
DUB
-
DEN
1 stop18h 05m
Iberia
Wed 27/517:35
DEN
-
DUB
1 stop11h 15m
Iberia
Deal found 6/5£404
Sun 21/611:45
DUB
-
DEN
1 stop15h 28m
American Airlines
Sun 28/617:45
DEN
-
DUB
1 stop11h 05m
American Airlines
Deal found 7/5£411
Fri 5/611:10
DUB
-
DEN
2 stops16h 05m
Delta
Sat 20/612:12
DEN
-
DUB
1 stop12h 43m
Delta
Deal found 6/5£438
Mon 18/508:55
DUB
-
DEN
2 stops18h 20m
Delta
Wed 27/509:06
DEN
-
DUB
2 stops17h 54m
Delta
Deal found 5/5£439
Mon 22/611:10
DUB
-
DEN
2 stops19h 21m
Delta
Mon 29/617:40
DEN
-
DUB
1 stop14h 45m
Delta
Deal found 10/5£440

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 May 2026.

Round-trip from

£390

One-way from

£282

Popular in

August

Cheapest in

February

Average price

£514
British Airways
  • British Airways
  • 7/9-28/9
  • 2 total stops
  • 25h 50m total
  • Dublin to Denver
Search Deals
JetBlue
  • JetBlue
  • 14/7
  • 1 total stop
  • 18h 29m total
  • Dublin to Denver
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£69 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 May 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 May 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

Wed 3/6

08:55-20:15

2 stops18h 20m

Denver Intl

Wed 24/6

09:19-07:55

1 stop15h 36m

£439
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 21/6

16:25-00:30

1 stop15h 05m

Denver Intl

Sun 28/6

20:00-11:45

Nonstop8h 45m

£466

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 2/7

11:30-22:59

1 stop18h 29m

Denver Intl

Wed 8/7

13:59-09:00

1 stop12h 01m

£561

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 21/5

05:55-15:36

2 stops16h 41m

Denver Intl

Wed 27/5

09:06-10:00

2 stops17h 54m

£564

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 7/6

05:55-17:39

2 stops18h 44m

Denver Intl

Fri 26/6

00:40-08:45

1 stop25h 05m

£564

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sat 6/6

12:00-20:15

1 stop15h 15m

Denver Intl

Wed 10/6

14:59-10:00

1 stop12h 01m

£564

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 9/6

19:05-23:59

2 stops35h 54m

Denver Intl

Fri 12/6

06:35-08:00

2 stops42h 25m

£678

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 7/6

05:55-22:45

2 stops23h 50m

Denver Intl

Fri 12/6

18:44-07:55

1 stop30h 11m

£707

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 21/5

08:35-21:38

2 stops20h 03m

Denver Intl

Mon 25/5

18:30-14:50

1 stop13h 20m

£711

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 29/6

11:10-22:45

2 stops18h 35m

Denver Intl

Fri 10/7

12:10-09:15

1 stop14h 05m

£775

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 £339). Flying from Dublin to Denver in August is currently the most expensive (average of £762). 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 May 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 May 2026.
Get a feel of what it's like to fly with Aer Lingus,American Airlines, andIcelandair 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
1,551 reviews
Check prices

Comfort

7.2

Crew

8.1

Boarding

7.4

Overall

7.3

Food

6.6

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
1,551 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Comfort

7.2

Crew

8.1

Boarding

7.4

Overall

7.3

Food

6.6

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.
American Airlines
7.1
Good
11,668 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Comfort

7.2

Crew

8.1

Boarding

7.4

Overall

7.3

Food

6.6

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
7.0
Good
652 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Comfort

7.2

Crew

8.1

Boarding

7.4

Overall

7.3

Food

6.6

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
7,969 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Comfort

7.2

Crew

8.1

Boarding

7.4

Overall

7.3

Food

6.6

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

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 4 different airlines.

  • How popular is this Dublin to Denver flight route?

    Within the past month, 43 users have taken a look at flights from Dublin to Denver Intl.

  • How long is the flight from Dublin to Denver?

    Delta and JetBlue can get you from Dublin to Denver in just under 18h 20m. Your travel time can differ by up to 09m. 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 £297, was found to be the cheapest airline from Dublin to Denver.Alternate airlines flying return to your destination include Icelandair and American Airlines. British Airways is currently priced 44% below the average price you’ll pay for this route.

  • 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 £762). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Dublin to Denver

Discover the top 4 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 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£297Average£386FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£330Average£552FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£358Average£457FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£360Average£592FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Deals for Dublin to Denver flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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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