Ireland

$291+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Apr 2 — Apr 91
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

Keep the following information in mind while searching for Denver to Ireland flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$595
(KLM)

One-way from

$291
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$533

Good round-trip deal

$780 or less

Good one-way deal

$535 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 Ireland
One-way flight from Denver Intl to Ireland
Highest demand for flights based on searches. 27% potential increase in price ($242 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($38 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Denver Intl to Ireland.
Price to beat on a one-way flight from Denver Intl to Ireland.

Find 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 28, 2025.

This oojo deal was found by Cheapflights users on 3/28. 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 10/234:40 pmDEN - DUB
1 stop11h 25mIcelandair
Sat 11/2211:30 amDUB - DEN
1 stop13h 35mIcelandair
Deal found 3/28$589
This KLM deal was found by Cheapflights users on 3/28. 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.
Tue 5/2712:31 pmDEN - SNN
1 stop15h 39mMultiple Airlines
Thu 6/51:05 pmSNN - DEN
1 stop14h 34mMultiple Airlines
Deal found 3/28$595
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Mon 12/2911:50 pmDEN - DUB
1 stop27h 15mUnited Airlines
Sat 1/109:00 amDUB - DEN
1 stop32h 28mUnited Airlines
Deal found 3/26$596
This Delta deal was found by Cheapflights users on 3/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/275:30 amDEN - SNN
2 stops22h 40mDelta
Thu 6/51:05 pmSNN - DEN
2 stops26h 30mDelta
Deal found 3/28$599
This Air Canada deal was found by Cheapflights users on 3/26. 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.
Mon 12/298:34 pmDEN - DUB
2 stops27h 36mAir Canada
Sun 1/119:00 amDUB - DEN
2 stops39h 35mAir Canada
Deal found 3/26$600
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/157:45 amDEN - SNN
2 stops19h 30mUnited Airlines
Tue 4/2212:30 pmSNN - DEN
1 stop12h 40mUnited Airlines
Deal found 3/26$600
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/182:45 pmDEN - SNN
2 stops18h 05mAmerican Airlines
Fri 4/257:40 amSNN - DEN
2 stops21h 59mAmerican Airlines
Deal found 3/27$606
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Sun 5/410:53 pmDEN - DUB
2 stops36h 47mMultiple Airlines
Sun 5/1112:50 pmDUB - DEN
1 stop29h 37mMultiple Airlines
Deal found 3/27$607
This JetBlue Airways deal was found by Cheapflights users on 3/28. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/212:14 pmDEN - DUB
1 stop13h 46mJetBlue
Mon 5/1210:40 amDUB - DEN
1 stop18h 01mJetBlue
Deal found 3/28$625
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2110:45 amDEN - DUB
2 stops17h 00mDelta
Wed 11/510:45 amDUB - DEN
1 stop19h 11mDelta
Deal found 3/26$626
This Lufthansa deal was found by Cheapflights users on 3/26. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:45 pmDEN - DUB
1 stop15h 55mLufthansa
Mon 11/35:00 amDUB - DEN
1 stop17h 55mLufthansa
Deal found 3/26$642
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Sun 6/87:40 pmDEN - DUB
2 stops31h 20mWestJet
Fri 6/1312:50 pmDUB - DEN
1 stop13h 02mWestJet
Deal found 3/27$663

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 28, 2025.
Use the filters below to find and compare flights from Denver to Ireland that are best for you.

Fly from

Denver

Fly to

Ireland

Route

Depart

Return

Price

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Thu 4/3

3:41 pm-10:15 am

1 stop11h 34m

Shannon

Wed 4/16

12:30 pm-10:33 pm

1 stop17h 03m

$586

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 5/27

12:31 pm-11:10 am

1 stop15h 39m

Shannon

Thu 6/5

1:05 pm-8:39 pm

1 stop14h 34m

$595

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 5/27

9:40 am-11:10 am

2 stops18h 30m

Shannon

Thu 6/5

1:05 pm-8:39 pm

1 stop14h 34m

$599

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Fri 4/11

2:45 pm-3:50 pm

2 stops18h 05m

Shannon

Thu 4/17

7:40 am-9:48 pm

2 stops21h 08m

$606

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 5/4

10:53 pm-6:40 pm

2 stops36h 47m

Dublin

Sun 5/11

12:50 pm-11:27 am

1 stop29h 37m

$607

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Fri 5/2

12:14 pm-9:00 am

1 stop13h 46m

Dublin

Mon 5/12

10:40 am-9:41 pm

1 stop18h 01m

$625

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 6/3

7:06 am-11:10 am

1 stop21h 04m

Shannon

Wed 6/11

1:05 pm-10:46 pm

1 stop16h 41m

$640

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 6/8

7:40 pm-10:00 am

2 stops31h 20m

Dublin

Fri 6/13

12:50 pm-6:52 pm

1 stop13h 02m

$663

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 4/28

11:59 pm-10:20 am

1 stop27h 21m

Dublin

Wed 5/7

9:20 am-12:33 pm

1 stop34h 13m

$664

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 9/23

4:40 pm-11:05 am

1 stop11h 25m

Dublin

Sun 10/26

11:15 am-7:00 pm

1 stop13h 45m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 44 results
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, November is the cheapest month in which you can book a flight from Denver to Ireland (average of $509). Flying from Denver to Ireland in June is currently the most expensive (average of $1,010). 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 IE?

Find hourly flight availability from Denver to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Ireland as you normally would.

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

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

Travelers seeking maximum savings on their Denver to Ireland flight should consider departing on Wednesday evenings 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.

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 28, 2025.
See what other customers who have flown with Delta, KLM and Air France from Denver to Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $336. Users have also found prices from $406 and $464 on Icelandair and Air Canada, respectively.

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

  • What are the cheapest flights from Denver to Ireland?

    Looking at all options, your cheapest flight can be booked for $484. While the most popular route (Denver Intl - Dublin) can be booked for $622 on average our data indicates $1,981 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, November is the cheapest month in which you can book a flight from Denver to Ireland (average of $509). Flying from Denver to Ireland in June is currently the most expensive (average of $1,010). 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$345Average$491FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$416Average$552FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$436Average$805FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$445Average$550FlexibilityNo cancel feeOn-time67%
KLMCheapest$449Average$555FlexibilityNo cancel feeOn-time75%
DeltaCheapest$455Average$720FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$468Average$706FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$471Average$621FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$489Average$622FlexibilityNo cancel feeOn-time71%
IberiaCheapest$493Average$651FlexibilityNo cancel feeOn-time77%
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.