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Northern Ireland

$379+ Cheap flights from Denver (DEN) 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Denver to Northern Ireland

Keep the following information in mind while searching for Denver to Northern Ireland flight deals. Data was last updated August 14, 2025.

Round-trip from

$633
(Cheapflightsfares)

One-way from

$379
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$933
From Denver Intl to Northern Ireland
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One-way flight from Denver Intl to Northern Ireland
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Highest demand for flights based on searches. 9% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($67 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Denver to Northern Ireland

Cheapest flights from Denver to Northern Ireland
Explore the most affordable flight options available from Denver to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 10/26:35 pmDEN - BHD
1 stop11h 40mBritish Airways
Sun 10/126:50 amBHD - DEN
1 stop16h 35mBritish Airways
Deal found 8/13$633
This Ovago deal was found by Cheapflights users on 8/13. 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 10/76:35 pmDEN - BHD
1 stop13h 45mBritish Airways
Wed 10/156:50 amBHD - DEN
1 stop16h 35mBritish Airways
Deal found 8/13$654
This Ovago deal was found by Cheapflights users on 8/13. 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.
Fri 9/265:06 pmDEN - BHD
2 stops18h 09mBritish Airways
Tue 9/306:15 pmBHD - DEN
1 stop29h 10mBritish Airways
Deal found 8/13$657
This British Airways deal was found by Cheapflights users on 8/13. 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.
Sun 10/56:35 pmDEN - BHD
1 stop13h 05mBritish Airways
Wed 10/156:50 amBHD - DEN
1 stop16h 35mBritish Airways
Deal found 8/13$659
This Gurufare deal was found by Cheapflights users on 8/13. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:35 pmDEN - BHD
1 stop15h 55mBritish Airways
Tue 10/149:35 amBHD - DEN
2 stops17h 52mBritish Airways
Deal found 8/13$665
This British Airways deal was found by Cheapflights users on 8/13. 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.
Sun 10/56:35 pmDEN - BHD
1 stop13h 05mBritish Airways
Fri 10/176:35 amBHD - DEN
1 stop16h 50mBritish Airways
Deal found 8/13$732
This British Airways deal was found by Cheapflights users on 8/13. 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.
Sat 10/116:35 pmDEN - BHD
1 stop13h 30mBritish Airways
Thu 10/166:35 amBHD - DEN
1 stop16h 50mBritish Airways
Deal found 8/13$738
This British Airways deal was found by Cheapflights users on 8/12. 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.
Sat 10/46:35 pmDEN - BHD
1 stop15h 40mBritish Airways
Wed 10/84:05 pmBHD - DEN
1 stop31h 20mBritish Airways
Deal found 8/12$739
This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:15 pmDEN - BFS
2 stops22h 00mMultiple Airlines
Tue 10/1411:55 amBFS - DEN
2 stops32h 50mMultiple Airlines
Deal found 8/14$847

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 August 14, 2025.
Use the filters below to find and compare flights from Denver to Northern Ireland that are best for you.

Fly from

Denver

Fly to

Northern Ireland

Route

Depart

Return

Price

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

6:35 pm-1:15 pm

1 stop11h 40m

Belfast City

Sun 10/12

6:50 am-4:25 pm

1 stop16h 35m

$633

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 10/7

6:35 pm-3:20 pm

1 stop13h 45m

Belfast City

Tue 10/14

6:15 pm-4:25 pm

1 stop29h 10m

$654

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 10/7

6:35 pm-3:20 pm

1 stop13h 45m

Belfast City

Wed 10/15

6:50 am-4:25 pm

1 stop16h 35m

$654

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 10/7

6:35 pm-3:20 pm

1 stop13h 45m

Belfast City

Thu 10/16

6:35 am-4:25 pm

1 stop16h 50m

$654

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 10/8

12:36 pm-11:55 am

2 stops16h 19m

Belfast City

Tue 10/14

6:15 pm-4:25 pm

1 stop29h 10m

$657

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 9/26

5:06 pm-6:15 pm

2 stops18h 09m

Belfast City

Tue 9/30

6:15 pm-4:25 pm

1 stop29h 10m

$657

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 10/5

6:35 pm-2:40 pm

1 stop13h 05m

Belfast City

Thu 10/16

6:35 am-4:25 pm

1 stop16h 50m

$659

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 10/5

6:35 pm-2:40 pm

1 stop13h 05m

Belfast City

Sat 10/18

7:00 pm-4:25 pm

1 stop28h 25m

$659

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 10/6

6:35 pm-3:40 pm

1 stop14h 05m

Belfast City

Tue 10/14

8:20 pm-4:25 pm

1 stop27h 05m

$659

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 10/8

12:36 pm-11:55 am

2 stops16h 19m

Belfast City

Thu 10/16

6:35 am-4:25 pm

1 stop16h 50m

$659

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results
1
2

Best time to book a flight from Denver to Northern Ireland

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

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

Find hourly flight availability from Denver 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 August 14, 2025.

When flying from Denver 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 August 14, 2025.
See what other customers who have flown with British Airways from Denver to Northern Ireland have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,266 reviews

Crew

7.6

Boarding

6.9

Food

6.3

Overall

6.7

Entertainment

6.4

Comfort

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.
British Airways
6.7
Okay
7,266 reviews
British Airways
6.7
Okay
7,266 reviews

Crew

7.6

Boarding

6.9

Food

6.3

Overall

6.7

Entertainment

6.4

Comfort

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.

Related info for your journey

Find useful and relevant information for your journey from Denver to Northern 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 Northern Ireland?

    For a flight from Denver to Northern Ireland, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Denver to Northern Ireland (average of $657). Flying from Denver 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 Denver 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 Denver to Northern Ireland

Discover the top airline that operate flights from Denver 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$608Average$771FlexibilityNo cancel feeOn-time70%

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