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$331+ Cheap flights from Dublin (DUB) to Denver (DEN)

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — DEN
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Find cheap flights from Dublin to Denver 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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Dublin to Denver Intl are usually found in September or October, booked 85 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap 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 January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$365

One-way from

$331
(oojo)

Popular in

June

Cheapest in

September

Average price

$837
Provider with most accurate pricing for Dublin-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Denver Intl flights.
Search Deals
From Dublin to Denver Intl
Search Deals
One-way flight from Dublin to Denver Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Dublin to Denver

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 January 6, 2026.

This deal was found by Cheapflights users on 1/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/258:45 amDUB - DEN
1 stop14h 45mBritish Airways
Mon 6/86:40 pmDEN - DUB
1 stop13h 00mBritish Airways
Deal found 1/4$365
This TravelUp deal was found by Cheapflights users on 1/4. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/58:50 amDUB - DEN
1 stop13h 40mBritish Airways
Sun 2/155:25 pmDEN - DUB
1 stop16h 25mBritish Airways
Deal found 1/4$386
This British Airways deal was found by Cheapflights users on 1/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/58:40 pmDUB - DEN
1 stop25h 50mBritish Airways
Fri 2/2012:21 pmDEN - DUB
2 stops14h 39mBritish Airways
Deal found 1/5$400
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:45 amDUB - DEN
2 stops18h 49mBritish Airways
Tue 2/242:28 pmDEN - DUB
2 stops16h 52mBritish Airways
Deal found 1/6$405
This Iberia deal was found by Cheapflights users on 1/5. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/168:50 amDUB - DEN
2 stops19h 03mMultiple Airlines
Fri 1/304:30 pmDEN - DUB
2 stops14h 50mMultiple Airlines
Deal found 1/5$406
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:50 amDUB - DEN
1 stop13h 40mBritish Airways
Tue 3/176:25 pmDEN - DUB
1 stop13h 55mBritish Airways
Deal found 1/6$411
This Flysmarter 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/258:40 pmDUB - DEN
1 stop25h 50mBritish Airways
Wed 4/86:40 pmDEN - DUB
1 stop16h 20mBritish Airways
Deal found 1/6$420
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:35 amDUB - DEN
1 stop14h 55mBritish Airways
Fri 5/156:40 pmDEN - DUB
1 stop30h 05mBritish Airways
Deal found 1/6$427
This Iberia deal was found by Cheapflights users on 1/5. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:30 amDUB - DEN
1 stop13h 00mBritish Airways
Thu 4/306:40 pmDEN - DUB
1 stop16h 20mBritish Airways
Deal found 1/5$428

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated January 6, 2026.
Use the filters below to find and compare flights from Dublin to Denver that are best for you.

Fly from

Dublin

Fly to

Denver

Route

Depart

Return

Price

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 5/25

8:45 am-4:30 pm

1 stop14h 45m

Denver Intl

Mon 6/8

6:40 pm-2:40 pm

1 stop13h 00m

$365

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 2/15

1:40 pm-3:30 pm

1 stop32h 50m

Denver Intl

Tue 3/3

12:21 pm-5:00 pm

2 stops21h 39m

$400

DublinDenver

DUB - DEN

DUBDEN

Dublin

Mon 2/9

5:55 pm-3:30 pm

1 stop28h 35m

Denver Intl

Tue 2/24

5:25 pm-5:00 pm

1 stop16h 35m

$400

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 2/5

4:05 pm-3:30 pm

1 stop30h 25m

Denver Intl

Fri 2/20

5:25 pm-2:20 pm

1 stop13h 55m

$400

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 2/5

8:40 pm-3:30 pm

1 stop25h 50m

Denver Intl

Thu 2/19

12:21 pm-2:50 pm

2 stops19h 29m

$400

DublinDenver

DUB - DEN

DUBDEN

Dublin

Fri 1/16

8:50 am-8:53 pm

2 stops19h 03m

Denver Intl

Fri 1/30

4:30 pm-2:20 pm

2 stops14h 50m

$406

DublinDenver

DUB - DEN

DUBDEN

Dublin

Sun 5/3

12:50 pm-11:25 am

1 stop29h 35m

$331

DublinDenver

DUB - DEN

DUBDEN

Dublin

Tue 6/2

10:00 am-11:25 am

2 stops56h 25m

$352

DublinDenver

DUB - DEN

DUBDEN

Dublin

Thu 4/2

11:30 am-8:56 am

2 stops28h 26m

$385

DublinDenver

DUB - DEN

DUBDEN

Dublin

Wed 2/18

7:40 pm-3:01 pm

3 stops50h 21m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 15 results
1
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Compare providers for flights from Dublin to Denver

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 Dublin to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Dublin-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Dublin-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Dublin-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-Denver 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 Dublin-Denver 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 Dublin to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Dublin 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 Dublin to Denver

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

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

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to Denver. 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 Dublin to Denver?

Currently, April is the cheapest month in which you can book a flight from Dublin to Denver (average of $431). Flying from Dublin to Denver in July is currently the most expensive (average of $708). 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.

How much does it cost to fly round-trip 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 January 6, 2026.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Aer Lingus from Dublin to Denver 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
9,134 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Boarding

7.7

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.
United Airlines
7.4
Good
9,134 reviews
United Airlines
7.4
Good
9,134 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Boarding

7.7

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.
American Airlines
7.2
Good
11,085 reviews
United Airlines
7.4
Good
9,134 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Boarding

7.7

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.
Aer Lingus
7.2
Good
1,425 reviews
United Airlines
7.4
Good
9,134 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Boarding

7.7

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.
Icelandair
7.1
Good
593 reviews
United Airlines
7.4
Good
9,134 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Boarding

7.7

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 Dublin to Denver. 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 Dublin to Denver flight route?

    This flight path from Dublin to Denver Intl was viewed by 5 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 Dublin to Denver?

    Departing from Dublin to Denver will take you 14h 45m. Airlines will cover a distance of 4378 mi.

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

    Cheapflights users have booked flights from Dublin to Denver round-trip from $433. Other airlines that can offer you cheap pricing are American Airlines, from $484, and Icelandair, from $601. Users have found that Aer Lingus is 45% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $444. British Airways flights start at $463 while deals on Aer Lingus start at $530 one-way.

  • 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 vacation 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, April is the cheapest month in which you can book a flight from Dublin to Denver (average of $431). Flying from Dublin to Denver in July is currently the most expensive (average of $708). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Broomfield
Westminster
Lakewood
Golden
Greeley
Lone Tree
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Evergreen
Idaho Springs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dublin to Denver

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

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 2,558,603 searches. Data last updated January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$433Average$808FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$484Average$789FlexibilityNo cancel feeOn-time71%
IcelandairCheapest$601Average$737FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$625Average$879FlexibilityNo cancel feeOn-time69%

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