HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$270+ Cheap flights from Colorado 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DUB
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado 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 Colorado to Ireland

Keep the following information in mind while searching for Colorado to Ireland flight deals. Data was last updated April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$551
(Iberia)

One-way from

$270
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$559

Good round-trip deal

$781 or less

Good one-way deal

$532 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 Colorado to Ireland
Search Deals
One-way flight from Colorado to Ireland
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($244 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Ireland.
Search Deals
Price to beat on a one-way flight from Colorado to Ireland.
Search Deals

Find flight deals from Colorado to Ireland

Cheapest flights from Colorado to Ireland
Explore the most affordable flight options available from Colorado to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This Iberia deal was found by Cheapflights users on 3/31. 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 5/69:06 amDEN - DUB
1 stop17h 39mIberia
Tue 5/139:35 amDUB - DEN
2 stops21h 24mIberia
Deal found 3/31$551
This Air Canada deal was found by Cheapflights users on 3/31. 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.
Thu 10/2311:35 amDEN - DUB
1 stop13h 10mAir Canada
Sat 11/229:00 amDUB - DEN
2 stops30h 50mAir Canada
Deal found 3/31$552
This Iberia deal was found by Cheapflights users on 3/31. 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.
Thu 10/96:35 pmDEN - DUB
1 stop13h 00mMultiple Airlines
Fri 10/1712:40 pmDUB - DEN
1 stop17h 58mMultiple Airlines
Deal found 3/31$554
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:35 pmDEN - DUB
1 stop17h 55mBritish Airways
Tue 5/208:35 amDUB - DEN
1 stop14h 50mBritish Airways
Deal found 3/31$555
This Delta deal was found by Cheapflights users on 3/31. 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.
Sat 10/2510:45 amDEN - DUB
2 stops16h 00mDelta
Tue 11/49:45 amDUB - DEN
2 stops19h 48mDelta
Deal found 3/31$576
This Finnair deal was found by Cheapflights users on 3/31. 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 4/2812:13 pmDEN - DUB
1 stop14h 32mFinnair
Wed 5/712:40 pmDUB - DEN
1 stop16h 16mFinnair
Deal found 3/31$585
This United deal was found by Cheapflights users on 4/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1211:59 pmDEN - DUB
1 stop27h 21mUnited Airlines
Tue 8/199:20 amDUB - DEN
1 stop32h 01mUnited Airlines
Deal found 4/1$586
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Tue 9/236:35 pmDEN - DUB
1 stop13h 10mAmerican Airlines
Tue 10/712:40 pmDUB - DEN
1 stop16h 17mAmerican Airlines
Deal found 4/1$588
This KLM deal was found by Cheapflights users on 3/31. 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.
Sun 5/259:15 amDEN - DUB
1 stop15h 30mKLM
Fri 6/611:00 amDUB - DEN
1 stop16h 19mKLM
Deal found 3/31$595
This KLM deal was found by Cheapflights users on 3/31. 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 3/31$595
This FlightHub deal was found by Cheapflights users on 3/31. 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 10/234:40 pmDEN - DUB
1 stop11h 25mIcelandair
Sun 11/211:30 amDUB - DEN
1 stop13h 35mIcelandair
Deal found 3/31$597
This United Airlines deal was found by Cheapflights users on 3/30. 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 4/47:46 amDEN - SNN
2 stops19h 29mUnited Airlines
Fri 4/1112:30 pmSNN - DEN
2 stops18h 28mUnited Airlines
Deal found 3/30$599

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado 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 April 1, 2025.
Use the filters below to find and compare flights from Colorado to Ireland that are best for you.

Fly from

Colorado

Fly to

Ireland

Route

Depart

Return

Price

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 5/6

9:06 am-9:45 am

1 stop17h 39m

Dublin

Tue 5/13

9:35 am-11:59 pm

2 stops21h 24m

$551

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 5/6

6:35 pm-7:30 pm

1 stop17h 55m

Dublin

Tue 5/20

8:35 am-4:25 pm

1 stop14h 50m

$555

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sat 5/10

4:37 pm-9:45 am

1 stop34h 08m

Dublin

Mon 5/19

3:20 pm-4:25 pm

1 stop32h 05m

$561

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Wed 4/23

7:55 pm-11:40 am

Nonstop8h 45m

Dublin

Wed 4/30

3:25 pm-5:59 pm

Nonstop9h 34m

$571

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 4/28

12:13 pm-9:45 am

1 stop14h 32m

Dublin

Wed 5/7

12:40 pm-9:56 pm

1 stop16h 16m

$585

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 8/12

11:59 pm-10:20 am

1 stop27h 21m

Dublin

Tue 8/19

9:20 am-10:21 am

1 stop32h 01m

$586

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 9/23

6:35 pm-2:45 pm

1 stop13h 10m

Dublin

Tue 10/7

12:40 pm-9:57 pm

1 stop16h 17m

$588

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Sun 5/25

9:15 am-7:45 am

1 stop15h 30m

Dublin

Wed 6/4

10:00 am-7:58 pm

1 stop16h 58m

$595

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

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Tue 8/12

9:40 am-8:15 am

2 stops15h 35m

Dublin

Tue 8/19

9:20 am-4:40 pm

1 stop14h 20m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 50 results
1
2
3
...
5

Best time to book a flight from Colorado to Ireland

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

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

Currently, November is the cheapest month in which you can book a flight from Colorado to Ireland (average of $509). Flying from Colorado 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 CO to IE?

Find hourly flight availability from Colorado 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 April 1, 2025.

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

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 April 1, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Colorado to Ireland have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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.
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

8.0

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 Colorado to Ireland. 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 Colorado to Ireland flight route?

    Within the past month, 9 users have taken a look at flights from Colorado to Ireland.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $301. Icelandair flights start at $346 while deals on Aer Lingus start at $445 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Colorado to Ireland (average of $509). Flying from Colorado 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.

Alternative routes for Colorado to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
Newark to Athens flights
John F Kennedy Intl to Barcelona-El Prat flights
Los Angeles to Heathrow flights
John F Kennedy Intl to Athens flights
John F Kennedy Intl to London City flights
LaGuardia to Heathrow flights
Boston to Heathrow flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Orly flights
Newark to Gatwick flights
John F Kennedy Intl to Istanbul flights
Newark to Lisbon flights
Newark to Orly flights
Newark to Barcelona-El Prat flights
O'Hare Intl to Heathrow flights
John F Kennedy Intl to Madrid flights
LaGuardia to Charles de Gaulle flights
San Francisco to Heathrow flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Malpensa flights
Seattle to Heathrow flights
O'Hare Intl to Athens flights
John F Kennedy Intl to Dublin flights
O'Hare Intl to Charles de Gaulle flights
Dulles Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Boston to Charles de Gaulle flights
Dallas/Fort Worth to Heathrow flights
Newark to Malpensa flights
Newark to Dublin flights
Newark to London City flights
Miami to Madrid flights
Newark to Madrid flights
Stewart to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Frederic Chopin flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Newark to Frankfurt flights
San Francisco to Charles de Gaulle flights
Stewart to Stansted flights
Boston to Dublin flights

Top 10 airlines flying from Colorado to Ireland

Discover the top 10 airlines that operate flights from Colorado 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$345Average$494FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$416Average$552FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$436Average$797FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$445Average$559FlexibilityNo cancel feeOn-time67%
KLMCheapest$449Average$555FlexibilityNo cancel feeOn-time75%
DeltaCheapest$455Average$722FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$469Average$728FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$471Average$627FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$489Average$768FlexibilityNo cancel feeOn-time71%
IberiaCheapest$493Average$654FlexibilityNo 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.