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Cheap flights from Dublin to Denver from £283

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Denver Intl are usually found in September or February, 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 5 May 2026.

Thu 28/509:30
DUB
-
DEN
1 stop21h 29m
Multiple Airlines
Thu 4/618:35
DEN
-
DUB
1 stop16h 20m
Multiple Airlines
Deal found 30/4£393
Thu 14/509:30
DUB
-
DEN
1 stop20h 15m
Finnair
Thu 28/514:21
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 30/4£395
Sun 17/509:30
DUB
-
DEN
1 stop20h 15m
Finnair
Mon 1/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 1/5£395
Mon 18/512:40
DUB
-
DEN
1 stop14h 15m
Finnair
Wed 27/514:21
DEN
-
DUB
1 stop14h 29m
Finnair
Deal found 4/5£397
Thu 14/511:45
DUB
-
DEN
2 stops19h 00m
Multiple Airlines
Thu 28/517:35
DEN
-
DUB
1 stop11h 15m
Multiple Airlines
Deal found 30/4£401
Sun 17/515:25
DUB
-
DEN
Nonstop9h 50m
Aer Lingus
Wed 3/620:00
DEN
-
DUB
Nonstop8h 45m
Aer Lingus
Deal found 1/5£401
Sun 17/509:30
DUB
-
DEN
1 stop20h 15m
Finnair
Wed 3/612:39
DEN
-
DUB
1 stop14h 06m
Finnair
Deal found 1/5£402
Wed 13/512:40
DUB
-
DEN
1 stop14h 15m
American Airlines
Fri 29/517:35
DEN
-
DUB
1 stop11h 15m
American Airlines
Deal found 30/4£405
Mon 18/512:40
DUB
-
DEN
1 stop16h 19m
Iberia
Wed 27/517:35
DEN
-
DUB
1 stop11h 15m
Iberia
Deal found 2/5£407
Thu 4/608:35
DUB
-
DEN
2 stops20h 58m
British Airways
Thu 11/616:25
DEN
-
DUB
2 stops19h 15m
British Airways
Deal found 3/5£417
Thu 28/507:00
DUB
-
DEN
2 stops21h 38m
British Airways
Tue 16/610:38
DEN
-
DUB
2 stops18h 27m
British Airways
Deal found 3/5£422

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 5 May 2026.

Round-trip from

£393

One-way from

£283

Popular in

August

Cheapest in

September

Average price

£519
28/5-4/6
  • 28/5-4/6
  • 2 total stops
  • 37h 49m total
  • Dublin to Denver
Search Deals
JetBlue
  • JetBlue
  • 15/6
  • 1 total stop
  • 18h 29m total
  • Dublin to Denver
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 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 5 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

Thu 28/5

09:30-23:59

1 stop21h 29m

Denver Intl

Thu 4/6

18:35-17:55

1 stop16h 20m

£393

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 17/5

09:30-22:45

1 stop20h 15m

Denver Intl

Mon 1/6

12:39-09:45

1 stop14h 06m

£395

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 17/5

09:30-22:45

1 stop20h 15m

Denver Intl

Wed 3/6

14:34-11:50

1 stop14h 16m

£402

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 18/5

05:55-17:14

2 stops18h 19m

Denver Intl

Wed 27/5

10:48-10:00

2 stops16h 12m

£442

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 18/5

11:10-20:15

2 stops16h 05m

Denver Intl

Wed 27/5

11:25-08:45

1 stop14h 20m

£442

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 18/5

11:10-20:15

2 stops16h 05m

Denver Intl

Wed 27/5

10:27-10:00

1 stop16h 33m

£443

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 19/6

11:00-00:22

1 stop20h 22m

Denver Intl

Fri 26/6

11:10-10:00

2 stops15h 50m

£448
Fastest return journey

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 1/6

16:25-00:30

1 stop15h 05m

Denver Intl

Mon 15/6

20:00-11:45

Nonstop8h 45m

£468
Cheapest one-way

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 17/6

11:30-22:59

1 stop18h 29m

£283

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 15/6

11:30-22:59

1 stop18h 29m

£283

Flights are sorted by cheapest return flights first.

Deals found on 4/5

Showing 1-10 of 19 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, September is the cheapest month in which you can book a flight from Dublin to Denver (average of £440). Flying from Dublin to Denver in August is currently the most expensive (average of £766). 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 5 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 5 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
1,541 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

Overall

7.3

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
1,541 reviews
Aer Lingus
7.3
Good
1,541 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

Overall

7.3

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
11,667 reviews
Aer Lingus
7.3
Good
1,541 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

Overall

7.3

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
650 reviews
Aer Lingus
7.3
Good
1,541 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

Overall

7.3

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
7,945 reviews
Aer Lingus
7.3
Good
1,541 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

Overall

7.3

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, 51 users have taken a look at flights from Dublin to Denver Intl.

  • How long is the flight from Dublin to Denver?

    Finnair and Delta can get you from Dublin to Denver in just under 18h 19m. Your travel time can differ by up to 1h 56m. 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 £298, 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 46% 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, September is the cheapest month in which you can book a flight from Dublin to Denver (average of £440). Flying from Dublin to Denver in August is currently the most expensive (average of £766). 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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£298Average£388FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£332Average£555FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£360Average£484FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£388Average£637FlexibilityNo 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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