Dublin

$242+ Cheap flights from Denver (DEN) to Dublin (DUB)

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Feb 7 — Feb 141
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Dublin are usually found in November or February, booked 42 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from Denver to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Dublin (DUB). 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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$391
(CrystalTravel)

One-way from

$242
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$504

Good round-trip deal

$640 or less

Good one-way deal

$453 or less
Provider with most accurate pricing for Denver Intl-Dublin flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Dublin flights.
From Denver Intl to Dublin
One-way flight from Denver Intl to Dublin
Highest demand for flights based on searches. 22% potential increase in price ($186 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Denver Intl to Dublin.
Price to beat on a one-way flight from Denver Intl to Dublin.

Find flight deals from Denver to Dublin

Cheapest flights from Denver to Dublin
Explore the most affordable flight options available from Denver to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This CrystalTravel deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:40 pmDEN - DUB
1 stop13h 35mIcelandair
Mon 4/202:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/6$380
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:40 pmDEN - DUB
1 stop11h 25mIcelandair
Tue 5/122:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/7$390
This CrystalTravel deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Wed 4/1512:15 pmDUB - DEN
1 stop13h 45mIcelandair
Deal found 1/7$391
This FlightHub deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Tue 5/52:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/6$394
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:40 pmDEN - DUB
1 stop11h 25mIcelandair
Mon 5/112:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/7$397
This CrystalTravel deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/193:40 pmDEN - DUB
1 stop11h 35mIcelandair
Sat 1/2411:30 amDUB - DEN
1 stop13h 35mIcelandair
Deal found 1/6$399
This oojo deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:40 pmDEN - DUB
1 stop13h 35mIcelandair
Mon 4/272:15 pmDUB - DEN
1 stop11h 45mIcelandair
Deal found 1/8$400
This KAYAK deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/283:17 pmDEN - DUB
2 stops15h 18mBritish Airways
Wed 2/48:50 amDUB - DEN
1 stop13h 40mBritish Airways
Deal found 1/6$402
This KAYAK deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:25 pmDEN - DUB
1 stop13h 40mBritish Airways
Tue 2/108:45 amDUB - DEN
1 stop13h 45mBritish Airways
Deal found 1/8$403
This KAYAK deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/95:25 pmDEN - DUB
1 stop14h 55mBritish Airways
Mon 2/238:40 pmDUB - DEN
1 stop25h 50mBritish Airways
Deal found 1/6$404

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Dublin 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 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Denver to Dublin that are best for you.

Fly from

Denver

Fly to

Dublin

Route

Depart

Return

Price

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 4/25

4:40 pm-11:05 am

1 stop11h 25m

Dublin

Thu 4/30

2:15 pm-7:00 pm

1 stop11h 45m

$409

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 1/18

12:34 pm-10:15 am

2 stops14h 41m

Dublin

Tue 1/27

7:35 am-3:30 pm

1 stop14h 55m

$419

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 3/10

6:25 pm-5:00 pm

1 stop16h 35m

Dublin

Mon 3/16

7:45 pm-4:30 pm

1 stop26h 45m

$420

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 3/9

6:25 pm-3:40 pm

1 stop15h 15m

Dublin

Mon 3/16

12:05 pm-4:30 pm

1 stop34h 25m

$420

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 5/6

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Tue 5/12

2:15 pm-7:00 pm

1 stop11h 45m

$424

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/4

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Tue 5/12

2:15 pm-7:00 pm

1 stop11h 45m

$424

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Thu 4/23

4:40 pm-11:05 am

1 stop11h 25m

Dublin

Fri 5/1

12:15 pm-7:00 pm

1 stop13h 45m

$430

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 3/4

12:20 pm-10:15 am

2 stops14h 55m

Dublin

Tue 3/17

8:50 am-9:36 pm

2 stops18h 46m

$435

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/1

4:43 pm-4:45 pm

2 stops17h 02m

Dublin

Wed 4/29

6:30 am-4:52 pm

2 stops17h 22m

$439

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/4

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Sat 5/16

2:15 pm-7:00 pm

1 stop11h 45m

$442

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 21 results
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Compare providers for flights from Denver to Dublin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Dublin in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Dublin flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Dublin flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Denver-Dublin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Dublin flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Dublin

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Dublin. Price data was last updated on January 2, 2026.

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Dublin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Dublin (average of $346). Flying from Denver to Dublin in June is currently the most expensive (average of $677). 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.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated January 8, 2026.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Aer Lingus from Denver to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

Find useful and relevant information for your journey from Denver to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Denver to Dublin flight route?

  • How long is the flight from Denver to Dublin?

    For as low as $409, Icelandair can have you in Dublin from Denver in 11h 25m. Denver and Dublin are separated by a distance of 4378 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from Denver to Dublin is JetBlue. Our recent data shows that you can find tickets from as low as $131 on this airline. Additional options worth looking into are Icelandair and KLM, starting at $358 and $362 round-trip. JetBlue is 79% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Denver to Dublin one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $215. Users have also found prices from $234 and $273 on WestJet and Icelandair, respectively.

  • What are the cheapest flights from Denver to Dublin?

    While on average a flight from Denver to Dublin is generally $637, our data shows the cheapest flight currently is $385. When looking at the most popular route, (Denver Intl - Dublin), you can expect to pay $376 for that flight.

  • Where are the most common layover locations when flying from Denver to Dublin?

  • What are some popular things to do or see while on a layover in Reykjavik?

    Most Reykjavik visitors opt to spend their time experiencing Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be visited by traveling about 23.2 mi, 23.3 mi, and 24.6 mi respectively from Reykjavik Keflavik Intl. Those looking to explore during their layover in Reykjavik can rent a car from Reykjavik Keflavik Intl for about $52 per day.

  • What are some popular points of interest to see during a layover in London?

    Hyde Park, Buckingham Palace, and Piccadilly Circus are currently the most popular points of interest in London at the moment. Hyde Park, Buckingham Palace and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow if you are interested in checking them out. Travelers can rent a car at London Heathrow for an average daily rate of $35 to make sightseeing during their layover a little easier.

  • What are points of interest worth seeing during a layover in Chicago?

    Most Chicago visitors opt to spend their time at Magnificent Mile, River North, and Grant Park. Magnificent Mile, River North, and Grant Park are located about 15.5 mi, 15.0 mi, and 16.2 mi, respectively from Chicago O'Hare Intl. Those landing in Chicago looking to spend some time exploring during their layover can rent a car for about $52 per day.

  • Where are the least popular layover locations for Denver to Dublin flights?

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Dublin (average of $346). Flying from Denver to Dublin in June is currently the most expensive (average of $677). 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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Leixlip

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Top 10 airlines flying from Denver to Dublin

Discover the top 10 airlines that operate flights from Denver to Dublin. 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 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$655FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$358Average$507FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$633FlexibilityNo cancel feeOn-time75%
IberiaCheapest$372Average$570FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$384Average$602FlexibilityNo cancel feeOn-time67%
DeltaCheapest$391Average$585FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$395Average$628FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$405Average$554FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$432Average$619FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$458Average$780FlexibilityNo cancel feeOn-time71%

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