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$458+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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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 November 25, 2025.

This KLM deal was found by Cheapflights users on 11/24. 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 12/21:59 pmDEN - BHD
2 stops19h 51mKLM
Thu 12/116:30 amBHD - DEN
2 stops18h 22mKLM
Deal found 11/24$695
This oojo deal was found by Cheapflights users on 11/24. 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.
Tue 12/25:25 pmDEN - BHD
1 stop16h 20mBritish Airways
Thu 12/118:00 pmBHD - DEN
1 stop26h 30mBritish Airways
Deal found 11/24$800
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Mon 12/112:17 amDEN - BHD
2 stops33h 28mMultiple Airlines
Thu 12/1110:40 amBHD - DEN
2 stops18h 40mMultiple Airlines
Deal found 11/24$1,061
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Tue 12/25:45 pmDEN - BFS
2 stops19h 30mMultiple Airlines
Thu 12/116:30 amBFS - DEN
2 stops18h 35mMultiple Airlines
Deal found 11/24$1,229
This Mytrip deal was found by Cheapflights users on 11/23. 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.
Tue 12/233:40 pmDEN - BFS
2 stops23h 10mMultiple Airlines
Tue 12/306:30 amBFS - DEN
2 stops16h 30mMultiple Airlines
Deal found 11/23$2,278

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 November 25, 2025.

Round-trip from

$652
(oojo)

One-way from

$458
(Kiwi.com)

Popular in

December

Cheapest in

February
From Denver Intl to Northern Ireland
Search Deals
One-way flight from Denver Intl 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

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 November 25, 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 4/16

6:40 pm-3:30 pm

1 stop13h 50m

Belfast City

Tue 4/21

8:20 pm-4:35 pm

1 stop27h 15m

$652

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 1/16

5:25 pm-2:15 pm

1 stop13h 50m

Belfast City

Tue 1/20

8:45 am-3:30 pm

1 stop13h 45m

$669

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 1/16

6:05 am-4:50 pm

2 stops27h 45m

Belfast City

Tue 1/20

5:20 pm-3:15 pm

2 stops28h 55m

$704

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 1/16

3:17 pm-7:15 pm

2 stops20h 58m

Belfast City

Tue 1/20

8:45 am-3:30 pm

1 stop13h 45m

$871

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 4/3

1:25 pm-3:45 pm

3 stops19h 20m

Belfast Intl

Mon 4/13

6:40 am-6:55 pm

2 stops19h 15m

$1,464

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 12/23

3:40 pm-9:50 pm

2 stops23h 10m

Belfast Intl

Tue 12/30

6:30 am-4:00 pm

2 stops16h 30m

$2,278

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 5/18

7:55 pm-7:05 am

2 stops28h 10m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

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 November 25, 2025.

It’s optimal to fly from Denver to Northern Ireland in the morning. By choosing this option you can save up to 54% 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 November 25, 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
7,539 reviews

Entertainment

6.4

Overall

6.7

Crew

7.6

Boarding

6.9

Comfort

6.7

Food

6.3

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
7,539 reviews
British Airways
6.7
Okay
7,539 reviews

Entertainment

6.4

Overall

6.7

Crew

7.6

Boarding

6.9

Comfort

6.7

Food

6.3

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 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.

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

    Airlines like British Airways and Delta fly from Denver to Northern Ireland in about 13h 50m. The time it takes to get you to your destination can typically vary by up to 13h 55m. Airlines will cover a distance of 4347 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

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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Aspen to Edinburgh flights
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Durango to Glasgow Intl flights

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 November 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$608Average$771FlexibilityNo cancel feeOn-time70%

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