HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$264+ Cheap flights from Denver (DEN) to Ireland

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Ireland 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.

Cheap flight deals from Denver to Ireland

Cheapest flights from Denver to Ireland
Explore the most affordable flight options available from Denver to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This Orbitz deal was found by Cheapflights users on 3/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:40 pm
DEN
-
DUB
1 stop17h 00m
British Airways
Thu 9/38:20 pm
DUB
-
DEN
1 stop27h 10m
British Airways
Deal found 3/10$546
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:00 pm
DEN
-
SNN
1 stop13h 15m
United Airlines
Tue 4/2812:30 pm
SNN
-
DEN
1 stop14h 01m
United Airlines
Deal found 3/7$558
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:45 am
DEN
-
SNN
2 stops19h 30m
United Airlines
Thu 4/3012:30 pm
SNN
-
DEN
3 stops26h 50m
United Airlines
Deal found 3/7$563
This Finnair deal was found by Cheapflights users on 3/10. 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.
Tue 4/2810:28 am
DEN
-
DUB
1 stop16h 17m
Finnair
Sun 5/39:40 am
DUB
-
DEN
2 stops20h 05m
Finnair
Deal found 3/10$565
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/172:00 pm
DEN
-
SNN
1 stop13h 15m
United Airlines
Mon 4/2012:30 pm
SNN
-
DEN
1 stop14h 01m
United Airlines
Deal found 3/7$578
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 United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:29 pm
DEN
-
SNN
1 stop28h 01m
United Airlines
Sun 8/239:30 am
SNN
-
DEN
1 stop13h 55m
United Airlines
Deal found 3/8$584
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/1912:34 pm
DEN
-
SNN
1 stop14h 41m
United Airlines
Tue 5/512:30 pm
SNN
-
DEN
1 stop18h 29m
United Airlines
Deal found 3/10$597
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 FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:21 am
DEN
-
DUB
2 stops37h 24m
Air Canada
Sun 8/239:50 am
DUB
-
DEN
1 stop20h 22m
Air Canada
Deal found 3/7$601

Find flight deals from Denver to Ireland

Keep the following information in mind while searching for Denver to Ireland flight deals. Data was last updated March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$546
(Orbitz)

One-way from

$264
(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 Ireland
Search Deals
One-way flight from Denver Intl to Ireland
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 Ireland.
Search Deals
Price to beat on a one-way flight from Denver Intl to Ireland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Ireland 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 12, 2026.
Use the filters below to find and compare flights from Denver to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 4/21

11:15 am-10:15 am

2 stops16h 00m

Shannon

Tue 4/28

12:30 pm-11:57 pm

2 stops18h 27m

$563

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Fri 4/17

7:45 am-10:15 am

2 stops19h 30m

Shannon

Mon 4/20

12:30 pm-11:57 pm

2 stops18h 27m

$583

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Sat 9/5

11:59 pm-11:10 am

1 stop28h 11m

Shannon

Fri 9/18

1:05 pm-10:49 pm

1 stop16h 44m

$613

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Sat 9/5

11:59 pm-11:10 am

1 stop28h 11m

Shannon

Sat 9/19

1:05 pm-9:23 am

2 stops27h 18m

$628

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Sun 8/23

8:25 pm-7:30 am

2 stops28h 05m

Shannon

Wed 8/26

9:30 am-3:17 pm

1 stop12h 47m

$646

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Mon 5/11

11:59 pm-10:15 am

2 stops27h 16m

Shannon

Thu 5/21

12:30 pm-7:34 pm

1 stop14h 04m

$658

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Sat 8/29

12:20 pm-11:10 am

1 stop15h 50m

Shannon

Sat 9/5

1:05 pm-11:45 pm

2 stops17h 40m

$663

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/11

10:28 am-9:45 am

1 stop16h 17m

Dublin

Tue 5/19

9:40 am-10:45 pm

2 stops20h 05m

$664

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

Sat 5/2

10:30 am-9:15 am

2 stops15h 45m

Dublin

Fri 5/15

5:55 am-3:36 pm

2 stops16h 41m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 44 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from Denver to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland 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 Ireland

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

Currently, January is the cheapest month in which you can book a flight from Denver to Ireland (average of $346). Flying from Denver to Ireland 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 Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated March 12, 2026.
Read through reviews of airlines operating flights from Denver to Ireland, such as United Airlines,Aer Lingus, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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
9,415 reviews
United Airlines
7.4
Good
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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
1,474 reviews
United Airlines
7.4
Good
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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
11,424 reviews
United Airlines
7.4
Good
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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
9,415 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

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 Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Ireland?

    Denver Intl (DEN) is the airport you will fly out of if you book a flight from Denver to Ireland. It is only a 18.5 mi journey to Denver Intl (DEN) from Denver’s city center.

  • How popular is this Denver to Ireland flight route?

    The Denver Intl to Ireland 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 Ireland?

    Airlines like United Airlines, KLM, and Finnair fly from Denver to Ireland in about 13h 15m. The time it takes to get you to your destination can typically vary by up to 14h 56m. The distance from Denver to Ireland is about 4309 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Denver to Ireland 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 most popular routes from Denver to Ireland?

    The most popular flight routes from Denver to Ireland are Denver Intl - Dublin, Denver Intl - Shannon and Denver Intl - Cork.

  • What are the cheapest flights from Denver to Ireland?

    Looking at all options, your cheapest flight can be booked for $318. While the most popular route (Denver Intl - Dublin) can be booked for $561 on average, our data indicates $706 when flying from Denver to Ireland.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Ireland (average of $346). Flying from Denver to Ireland 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

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 10 airlines flying from Denver to Ireland

Discover the top 10 airlines that operate flights from Denver to Ireland. 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$678FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$352Average$456FlexibilityNo cancel feeOn-time76%
KLMCheapest$362Average$663FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$382Average$694FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$383Average$570FlexibilityNo cancel feeOn-time67%
IberiaCheapest$387Average$567FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$402Average$582FlexibilityNo cancel feeOn-time70%
DeltaCheapest$403Average$697FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$405Average$645FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$428Average$641FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.