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$243+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Dublin are usually found in January or February, booked 85 days in advance, depart on a Monday or Thursday and return on a Wednesday

Cheap 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 March 10, 2026.

This Finnair deal was found by Cheapflights users on 3/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:40 pm
DEN
-
DUB
1 stop17h 50m
Multiple Airlines
Wed 9/168:35 am
DUB
-
DEN
1 stop14h 55m
Multiple Airlines
Deal found 3/5$571
This Finnair deal was found by Cheapflights users on 3/4. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:40 pm
DEN
-
DUB
1 stop17h 55m
Multiple Airlines
Mon 5/119:30 am
DUB
-
DEN
1 stop20h 15m
Multiple Airlines
Deal found 3/4$573
This Mytrip deal was found by Cheapflights users on 3/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:50 pm
DEN
-
DUB
1 stop28h 55m
Multiple Airlines
Wed 5/138:50 am
DUB
-
DEN
1 stop13h 50m
Multiple Airlines
Deal found 3/6$576
This Ticket deal was found by Cheapflights users on 3/7. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:30 am
DEN
-
DUB
1 stop15h 15m
Air Canada
Fri 5/159:50 am
DUB
-
DEN
1 stop16h 37m
Air Canada
Deal found 3/7$583
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:05 pm
DEN
-
DUB
1 stop17h 50m
Lufthansa
Sat 5/96:00 am
DUB
-
DEN
1 stop16h 40m
Lufthansa
Deal found 3/7$584
This Mytrip deal was found by Cheapflights users on 3/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:15 pm
DEN
-
DUB
1 stop17h 40m
Multiple Airlines
Tue 9/159:20 am
DUB
-
DEN
1 stop32h 11m
Multiple Airlines
Deal found 3/6$587
This Air Canada deal was found by Cheapflights users on 3/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/911:25 am
DEN
-
DUB
1 stop13h 20m
Air Canada
Wed 8/199:20 am
DUB
-
DEN
2 stops39h 44m
Air Canada
Deal found 3/7$598
This FlightHub deal was found by Cheapflights users on 3/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:59 pm
DEN
-
DUB
2 stops39h 51m
Scandinavian Airlines
Sat 10/3110:10 am
DUB
-
DEN
2 stops43h 33m
Scandinavian Airlines
Deal found 3/8$599
This Finnair deal was found by Cheapflights users on 3/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:40 pm
DEN
-
DUB
1 stop17h 40m
Multiple Airlines
Tue 5/199:30 am
DUB
-
DEN
1 stop20h 15m
Multiple Airlines
Deal found 3/5$600

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$576
(Mytrip)

One-way from

$243
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$590

Good round-trip deal

$801 or less

Good one-way deal

$417 or less
Provider with most accurate pricing for Denver Intl-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Dublin flights.
Search Deals
From Denver Intl to Dublin
Search Deals
One-way flight from Denver Intl to Dublin
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($176 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Dublin.
Search Deals
Price to beat on a one-way flight from Denver Intl to Dublin.
Search Deals

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 March 10, 2026.
Use the filters below to find and compare flights from Denver to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Fri 5/1

9:30 am-7:45 am

1 stop15h 15m

Dublin

Tue 5/5

8:50 am-4:45 pm

1 stop14h 55m

$631

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 5/2

10:28 am-9:45 am

1 stop16h 17m

Dublin

Fri 5/15

9:40 am-10:45 pm

2 stops20h 05m

$656

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 5/9

6:40 pm-4:20 pm

1 stop14h 40m

Dublin

Mon 5/18

9:40 am-10:45 pm

2 stops20h 05m

$662

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/22

11:59 pm-8:20 am

1 stop25h 21m

Dublin

Tue 4/28

10:40 am-11:04 pm

1 stop19h 24m

$667

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 5/10

8:15 am-7:20 am

2 stops16h 05m

Dublin

Tue 5/19

9:30 am-6:25 pm

2 stops15h 55m

$667

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Fri 5/1

6:40 pm-5:50 pm

1 stop16h 10m

Dublin

Tue 5/5

8:25 pm-4:30 pm

1 stop27h 05m

$681

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Fri 5/29

7:55 am-9:15 am

2 stops18h 20m

Dublin

Sun 6/7

10:00 am-10:29 pm

2 stops19h 29m

$694

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 5/24

7:40 am-7:45 am

2 stops17h 05m

Dublin

Sat 7/18

9:20 am-8:12 pm

1 stop17h 52m

$730

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 6/3

12:25 pm-10:00 am

2 stops14h 35m

Dublin

Mon 6/8

5:55 am-3:31 pm

2 stops16h 36m

$741

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 4/28

7:00 am-9:15 am

2 stops19h 15m

Dublin

Tue 5/12

5:55 am-5:57 pm

2 stops19h 02m

$757

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

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

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Dublin flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 6, 2026.

Booking 85 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 $647). 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 March 10, 2026.
Peruse reviews from past customers who have flown with United Airlines,Aer Lingus, andAmerican Airlines 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.
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,413 reviews
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,473 reviews
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,415 reviews
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
619 reviews
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,781 reviews
United Airlines
7.4
Good
9,413 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    The Denver Intl to Dublin flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to Dublin?

    For as low as $631, United Airlines can have you in Dublin from Denver in 15h 15m. 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 $352 and $362 round-trip. JetBlue is 78% 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 $288 and $308 on Icelandair and Delta, respectively.

  • What are the cheapest flights from Denver to Dublin?

    While on average a flight from Denver to Dublin is generally $706, our data shows the cheapest flight currently is $318. When looking at the most popular route, (Denver Intl - Dublin), you can expect to pay $569 for that flight.

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

    The most popular layover on flights from Denver to Dublin is Reykjavik. Denver to Dublin flights stop in London the next most.

  • 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 $61 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 $33 to make sightseeing during their layover a little easier.

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

    Flights departing from Denver and landing in Dublin layover in Washington, D.C. least frequently. Chicago sees the second fewest layovers for non-direct flights flying from Denver to Dublin.

  • 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 $647). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Denver to Dublin

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Shannon flights
Denver to Cork flights

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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$678FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$352Average$456FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$663FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$382Average$639FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$383Average$570FlexibilityNo cancel feeOn-time67%
IberiaCheapest$387Average$567FlexibilityNo cancel feeOn-time77%
DeltaCheapest$403Average$659FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$405Average$645FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$408Average$549FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$428Average$641FlexibilityNo cancel feeOn-time76%

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