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Northern Ireland

$316+ 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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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Cheap 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 December 3, 2025.

This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/107:10 amDEN - BHD
2 stops30h 50mDelta
Mon 12/155:20 pmBHD - DEN
2 stops32h 41mDelta
Deal found 12/3$667
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/107:10 amDEN - BHD
2 stops30h 50mDelta
Sun 12/145:20 pmBHD - DEN
2 stops32h 41mDelta
Deal found 12/3$682
This Delta deal was found by Cheapflights users on 12/3. 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.
Mon 12/87:10 amDEN - BHD
2 stops26h 40mDelta
Sun 12/145:20 pmBHD - DEN
2 stops32h 41mDelta
Deal found 12/3$697
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/3112:20 pmDEN - BHD
2 stops21h 30mDelta
Wed 1/75:20 pmBHD - DEN
2 stops48h 37mDelta
Deal found 12/3$699
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/107:10 amDEN - BHD
2 stops30h 50mDelta
Tue 12/166:30 amBHD - DEN
2 stops24h 15mDelta
Deal found 12/3$732
This Delta deal was found by Cheapflights users on 12/3. 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.
Wed 12/3112:20 pmDEN - BHD
2 stops21h 30mDelta
Sat 1/105:20 pmBHD - DEN
2 stops48h 37mDelta
Deal found 12/3$741
This Delta deal was found by Cheapflights users on 12/3. 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.
Mon 12/86:15 amDEN - BHD
2 stops27h 35mDelta
Tue 12/166:30 amBHD - DEN
2 stops18h 22mDelta
Deal found 12/3$747
This Ovago deal was found by Cheapflights users on 12/3. 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.
Tue 12/305:25 pmDEN - BHD
1 stop16h 20mBritish Airways
Wed 1/77:25 pmBHD - DEN
1 stop27h 05mBritish Airways
Deal found 12/3$765
This British Airways deal was found by Cheapflights users on 12/3. 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 12/305:25 pmDEN - BHD
1 stop14h 25mBritish Airways
Thu 1/86:35 amBHD - DEN
1 stop15h 55mBritish Airways
Deal found 12/3$770
This British Airways deal was found by Cheapflights users on 12/3. 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.
Wed 12/315:25 pmDEN - BHD
1 stop19h 50mBritish Airways
Wed 1/77:25 pmBHD - DEN
1 stop27h 05mBritish Airways
Deal found 12/3$779
This British Airways deal was found by Cheapflights users on 12/3. 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 12/305:25 pmDEN - BHD
1 stop16h 20mBritish Airways
Sat 1/106:00 pmBHD - DEN
1 stop28h 30mBritish Airways
Deal found 12/3$811
This British Airways deal was found by Cheapflights users on 12/3. 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.
Wed 12/315:25 pmDEN - BHD
1 stop19h 50mBritish Airways
Sat 1/1011:35 amBHD - DEN
1 stop34h 55mBritish Airways
Deal found 12/3$820

Find 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 December 3, 2025.

Round-trip from

$627
(Cheapflightsfares)

One-way from

$316
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,558
From Colorado to Northern Ireland
Search Deals
One-way flight from Colorado to Northern Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 3, 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 - BHD

DENBHD

Denver Intl

Wed 2/18

5:25 pm-2:15 pm

1 stop13h 50m

Belfast City

Fri 2/27

8:45 am-3:30 pm

1 stop13h 45m

$627

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 1/11

5:25 pm-4:50 pm

1 stop16h 25m

Belfast City

Mon 1/19

7:25 pm-11:16 pm

2 stops34h 51m

$642

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 4/16

6:40 pm-3:30 pm

1 stop13h 50m

Belfast City

Tue 4/21

4:25 pm-4:35 pm

1 stop31h 10m

$649

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 2/6

5:25 pm-5:15 pm

1 stop16h 50m

Belfast City

Tue 2/10

6:35 am-3:30 pm

1 stop15h 55m

$665

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 2/6

10:50 am-4:50 pm

2 stops23h 00m

Belfast City

Tue 2/10

5:20 pm-7:28 pm

2 stops33h 08m

$692

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 12/31

12:20 pm-4:50 pm

2 stops21h 30m

Belfast City

Wed 1/7

5:20 pm-10:57 am

2 stops48h 37m

$699

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 1/11

3:40 pm-9:55 pm

2 stops23h 15m

Belfast Intl

Mon 1/19

6:30 am-7:55 pm

2 stops20h 25m

$1,058

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 12/29

3:40 pm-10:15 pm

3 stops23h 35m

Belfast Intl

Wed 1/7

9:05 pm-6:05 pm

2 stops28h 00m

$1,084

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 2/18

3:40 pm-3:35 pm

2 stops16h 55m

Belfast Intl

Fri 2/27

2:20 pm-4:00 pm

2 stops32h 40m

$1,141

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 1/17

11:15 am-10:40 pm

3 stops28h 25m

Belfast Intl

Sat 1/24

10:25 pm-6:05 pm

3 stops26h 40m

$1,175

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 15 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 December 3, 2025.

It’s optimal to fly from Colorado to Northern Ireland in the morning. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the evening.

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 December 3, 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
7,557 reviews

Crew

7.6

Boarding

6.9

Food

6.4

Comfort

6.7

Entertainment

6.4

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
7,557 reviews
British Airways
6.7
Okay
7,557 reviews

Crew

7.6

Boarding

6.9

Food

6.4

Comfort

6.7

Entertainment

6.4

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 13h 50m. Fly via British Airways to get the fastest option. The distance between Colorado and Northern Ireland is about 4347 mi.

  • 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.

See more FAQs

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Alternative routes for Colorado to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$608Average$771FlexibilityNo cancel feeOn-time70%

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