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$264+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Find cheap flights from Denver to Dublin with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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

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 December 26, 2025.

This Gotogate deal was found by Cheapflights users on 12/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:20 pmDEN - DUB
1 stop17h 50mMultiple Airlines
Wed 1/78:45 amDUB - DEN
2 stops32h 38mMultiple Airlines
Deal found 12/24$808
This oojo deal was found by Cheapflights users on 12/24. 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.
Wed 12/315:25 pmDEN - DUB
1 stop19h 20mBritish Airways
Wed 1/73:10 pmDUB - DEN
1 stop31h 20mBritish Airways
Deal found 12/24$864
This Booking.com deal was found by Cheapflights users on 12/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/274:20 pmDEN - DUB
1 stop17h 50mLufthansa
Mon 12/295:10 amDUB - DEN
1 stop17h 50mLufthansa
Deal found 12/23$865
This United Airlines deal was found by Cheapflights users on 12/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/281:30 pmDEN - DUB
1 stop13h 50mUnited Airlines
Wed 12/3112:05 pmDUB - DEN
2 stops29h 08mUnited Airlines
Deal found 12/25$889
This Gurufare deal was found by Cheapflights users on 12/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:20 amDEN - DUB
1 stop13h 50mLufthansa
Mon 1/55:55 pmDUB - DEN
1 stop32h 00mLufthansa
Deal found 12/24$1,090
This KLM deal was found by Cheapflights users on 12/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:35 amDEN - DUB
1 stop14h 45mKLM
Thu 1/15:55 amDUB - DEN
2 stops17h 49mKLM
Deal found 12/24$1,118
This oojo deal was found by Cheapflights users on 12/24. 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 12/2512:35 pmDEN - DUB
2 stops21h 50mBritish Airways
Thu 1/18:50 amDUB - DEN
2 stops20h 36mBritish Airways
Deal found 12/24$1,124
This KLM deal was found by Cheapflights users on 12/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:20 pmDEN - DUB
2 stops17h 20mKLM
Thu 1/15:55 amDUB - DEN
2 stops17h 49mKLM
Deal found 12/25$1,128
This Booking.com deal was found by Cheapflights users on 12/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:25 pmDEN - DUB
1 stop10h 45mMultiple Airlines
Thu 1/111:45 amDUB - DEN
2 stops18h 53mMultiple Airlines
Deal found 12/25$1,133
This Gurufare deal was found by Cheapflights users on 12/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:20 amDEN - DUB
1 stop13h 50mLufthansa
Thu 1/110:40 amDUB - DEN
1 stop12h 49mLufthansa
Deal found 12/25$1,135

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 December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$428
(CrystalTravel)

One-way from

$264
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$706

Good round-trip deal

$659 or less

Good one-way deal

$448 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 ($183 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 December 2025
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 December 26, 2025.
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 2/21

8:30 pm-8:10 am

1 stop28h 40m

Dublin

Wed 3/4

9:00 am-10:23 am

1 stop32h 23m

$457

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 2/22

8:30 pm-8:10 am

1 stop28h 40m

Dublin

Fri 3/6

9:00 am-10:23 am

1 stop32h 23m

$457

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 2/22

11:59 pm-10:20 am

1 stop27h 21m

Dublin

Wed 3/4

9:00 am-10:23 am

1 stop32h 23m

$457

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 2/23

5:54 pm-8:10 am

1 stop31h 16m

Dublin

Fri 3/6

9:00 am-10:23 am

1 stop32h 23m

$457

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 1/26

3:40 pm-10:15 am

1 stop11h 35m

Dublin

Sun 2/1

11:30 am-6:05 pm

1 stop13h 35m

$479

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 2/22

7:10 am-7:45 am

1 stop17h 35m

Dublin

Thu 3/5

9:45 am-7:21 pm

1 stop16h 36m

$484

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 2/25

7:10 am-8:45 am

2 stops18h 35m

Dublin

Wed 3/4

1:25 pm-12:23 am

2 stops17h 58m

$486

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 2/17

6:00 am-8:00 am

2 stops19h 00m

Dublin

Thu 3/5

8:50 am-9:14 pm

2 stops19h 24m

$487

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/4

11:42 am-10:45 am

1 stop16h 03m

Dublin

Mon 5/18

1:25 pm-6:34 pm

2 stops36h 09m

$515

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 5/3

6:30 am-7:55 am

1 stop18h 25m

Dublin

Mon 5/18

1:25 pm-6:34 pm

2 stops36h 09m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 20 results
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 December.
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 December 19, 2025.

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.

What is the cheapest time of day to fly from DEN to DUB?

Find hourly flight availability from Denver to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to Dublin in the afternoon. If you’re flexible enough to do this you can expect to save up to 35% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Denver to Dublin?

Use this chart to determine the cheapest time to fly round-trip from Denver to Dublin. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Dublin flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 26, 2025.
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.
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,116 reviews
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,066 reviews
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Aer Lingus
7.2
Good
1,412 reviews
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Air Canada
7.1
Good
10,562 reviews
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Icelandair
7.0
Good
592 reviews
United Airlines
7.4
Good
9,116 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 7 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 $479, United Airlines can have you in Dublin from Denver in 11h 35m. 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 $359 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 most reliable airlines from Denver to Dublin?

    Before booking your flight to Dublin from Denver, check out the most reliable airlines to get you to your destination on time: American Airlines (100%), Aer Lingus (100%), Iberia( 100%).

  • What are the cheapest flights from Denver to Dublin?

    While on average a flight from Denver to Dublin is generally $696, our data shows the cheapest flight currently is $385. When looking at the most popular route, (Denver Intl - Dublin), you can expect to pay $428 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. London is followed by Chicago in terms of the most popular layover location for Denver to Dublin flights.

  • 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 $49 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 $32 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 $51 per day.

  • 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. Toronto 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 $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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$655FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$359Average$515FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$658FlexibilityNo cancel feeOn-time75%
IberiaCheapest$372Average$570FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$384Average$598FlexibilityNo cancel feeOn-time67%
DeltaCheapest$391Average$596FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$397Average$624FlexibilityNo 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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