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Northern Ireland

$350+ Cheap flights from Colorado to Northern 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Colorado to Northern Ireland

Keep the following information in mind while searching for Colorado to Northern Ireland flight deals. Data was last updated September 16, 2025.

Round-trip from

$777
(Mytrip)

One-way from

$350
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$722
From Colorado to Northern Ireland
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One-way flight from Colorado to Northern Ireland
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Highest demand for flights based on searches. 7% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Colorado to Northern Ireland

Cheapest flights from Colorado to Northern Ireland
Explore the most affordable flight options available from Colorado to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:40 pmDEN - BFS
2 stops22h 00mMultiple Airlines
Wed 11/57:20 amBFS - DEN
2 stops17h 45mMultiple Airlines
Deal found 9/14$777
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 10/212:05 pmDEN - BHD
2 stops21h 50mDelta
Sun 10/126:30 amBHD - DEN
2 stops22h 11mDelta
Deal found 9/16$949
This Ovago deal was found by Cheapflights users on 9/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:59 pmDEN - BHD
2 stops42h 46mBritish Airways
Sun 10/126:50 amBHD - DEN
2 stops19h 36mBritish Airways
Deal found 9/14$952
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Thu 10/27:55 pmDEN - BHD
2 stops17h 00mAer Lingus
Sun 10/127:00 amBHD - DEN
2 stops17h 59mAer Lingus
Deal found 9/15$962
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/106:14 pmDEN - BHD
2 stops19h 31mMultiple Airlines
Fri 10/179:30 amBHD - DEN
2 stops17h 57mMultiple Airlines
Deal found 9/14$1,034
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:20 pmDEN - BFS
2 stops22h 40mMultiple Airlines
Fri 11/73:05 pmBFS - DEN
2 stops31h 55mMultiple Airlines
Deal found 9/15$1,068
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:15 pmDEN - BFS
2 stops21h 25mMultiple Airlines
Fri 10/176:05 amBFS - DEN
3 stops35h 41mMultiple Airlines
Deal found 9/14$1,134
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Fri 10/107:55 pmDEN - BHD
2 stops17h 30mAer Lingus
Fri 10/176:35 amBHD - DEN
1 stop16h 50mAer Lingus
Deal found 9/14$1,584

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Northern 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 September 16, 2025.
Use the filters below to find and compare flights from Colorado to Northern Ireland that are best for you.

Fly from

Colorado

Fly to

Northern Ireland

Route

Depart

Return

Price

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 10/29

4:40 pm-8:40 pm

2 stops22h 00m

Belfast Intl

Wed 11/5

7:20 am-6:05 pm

2 stops17h 45m

$777

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

12:05 pm-4:55 pm

2 stops21h 50m

Belfast City

Sun 10/12

6:30 am-9:41 pm

2 stops22h 11m

$949

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

6:59 pm-8:45 pm

2 stops42h 46m

Belfast City

Sun 10/12

6:50 am-7:26 pm

2 stops19h 36m

$952

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

7:55 pm-7:55 pm

2 stops17h 00m

Belfast City

Sun 10/12

7:00 am-5:59 pm

2 stops17h 59m

$962

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 10/10

6:14 pm-8:45 pm

2 stops19h 31m

Belfast City

Fri 10/17

9:30 am-8:27 pm

2 stops17h 57m

$1,034

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 10/31

5:20 pm-10:00 pm

2 stops22h 40m

Belfast Intl

Fri 11/7

3:05 pm-4:00 pm

2 stops31h 55m

$1,068

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 10/10

12:15 pm-4:40 pm

2 stops21h 25m

Belfast Intl

Fri 10/17

6:05 am-10:46 am

3 stops35h 41m

$1,134

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 9/26

11:59 pm-9:25 am

3 stops26h 26m

$350

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 9/26

11:59 pm-8:10 am

3 stops49h 11m

$359

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 9/26

12:41 pm-8:45 pm

2 stops25h 04m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 13 results
1
2

Best time to book a flight from Colorado to Northern Ireland

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

What is the cheapest time of day to fly from CO to NIR?

Find hourly flight availability from Colorado to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Colorado to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern 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 Northern Ireland. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with British Airways from Colorado to Northern Ireland 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.
British Airways
6.7
Okay
7,363 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,363 reviews
British Airways
6.7
Okay
7,363 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Colorado to Northern Ireland?

    There are many flights that can get you from Colorado to Northern Ireland in 17h. Fly via Delta, British Airways, or Aer Lingus to get the fastest option. The distance between Colorado and Northern Ireland is about 4347 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Colorado to Northern Ireland (average of $657). Flying from Colorado to Northern Ireland in June is currently the most expensive (average of $1,189). 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

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Alternative routes for Colorado to Northern Ireland

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Top airline flying from Colorado to Northern Ireland

Discover the top airline that operate flights from Colorado to Northern 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$608Average$776FlexibilityNo cancel feeOn-time70%

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