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Belfast Intl

$328+ Cheap flights from Denver (DEN) to Belfast Intl (BFS)

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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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Cheap flight deals from Denver to Belfast Intl

Cheapest flights from Denver to Belfast Intl
Explore the most affordable flight options available from Denver to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.

This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:40 pm
DEN
-
BFS
2 stops21h 00m
Multiple Airlines
Thu 9/179:25 pm
BFS
-
DEN
3 stops29h 52m
Multiple Airlines
Deal found 5/12$1,062
This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:40 pm
DEN
-
BFS
2 stops16h 55m
Multiple Airlines
Sun 9/137:35 pm
BFS
-
DEN
3 stops30h 11m
Multiple Airlines
Deal found 5/12$1,150
This Mytrip deal was found by Cheapflights users on 5/8. 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.
Thu 9/174:40 pm
DEN
-
BFS
3 stops23h 20m
Multiple Airlines
Thu 9/246:10 am
BFS
-
DEN
2 stops19h 50m
Multiple Airlines
Deal found 5/8$1,180
This Mytrip deal was found by Cheapflights users on 5/9. 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 9/164:15 pm
DEN
-
BFS
2 stops20h 00m
Multiple Airlines
Mon 10/56:50 pm
BFS
-
DEN
2 stops27h 50m
Multiple Airlines
Deal found 5/9$1,279
This Mytrip deal was found by Cheapflights users on 5/11. 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.
Mon 6/111:25 am
DEN
-
BFS
3 stops21h 10m
Multiple Airlines
Wed 6/108:30 am
BFS
-
DEN
2 stops33h 50m
Multiple Airlines
Deal found 5/11$1,348

Find flight deals from Denver to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Belfast Intl (BFS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,062
(Mytrip)

One-way from

$328
(Kiwi.com)
Provider with most accurate pricing for Denver Intl-Belfast Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Belfast Intl flights.
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From Denver Intl to Belfast Intl
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One-way flight from Denver Intl to Belfast Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Belfast Intl 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 May 13, 2026.
Use the filters below to find and compare flights from Denver to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 9/12

4:40 pm-4:35 pm

2 stops16h 55m

Belfast Intl

Sun 9/13

7:35 pm-6:46 pm

3 stops30h 11m

$1,150
Quickest round-trip

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Thu 9/17

4:40 pm-11:00 pm

3 stops23h 20m

Belfast Intl

Thu 9/24

6:10 am-7:00 pm

2 stops19h 50m

$1,180

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 9/16

4:15 pm-7:15 pm

2 stops20h 00m

Belfast Intl

Mon 10/5

6:50 pm-3:40 pm

2 stops27h 50m

$1,279

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 6/1

11:25 am-3:35 pm

3 stops21h 10m

Belfast Intl

Wed 6/10

8:30 am-11:20 am

2 stops33h 50m

$1,348
Cheapest one-way

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 9/13

4:40 pm-9:30 pm

2 stops21h 50m

$328

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 9/9

8:10 pm-7:50 am

2 stops28h 40m

$414

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 9/14

6:25 am-10:00 am

3 stops20h 35m

$415

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 9/15

8:10 pm-7:40 am

3 stops28h 30m

$453

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Thu 9/10

6:25 am-10:40 am

3 stops21h 15m

$532
Quickest one-way

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 9/12

8:10 pm-7:10 pm

3 stops16h 00m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Sorted by cheapest first

Compare providers for flights from Denver to Belfast Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Belfast Intl in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Belfast Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Belfast Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Belfast Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Belfast Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Belfast Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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.

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Belfast Intl. Reviews last updated May 13, 2026.
Peruse reviews from past customers who have flown with British Airways from Denver to Belfast Intl Airport 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
7,974 reviews

Boarding

6.9

Comfort

6.8

Overall

6.7

Entertainment

6.4

Crew

7.7

Food

6.4

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance
British Airways
6.7
Okay
7,974 reviews
British Airways
6.7
Okay
7,974 reviews

Boarding

6.9

Comfort

6.8

Overall

6.7

Entertainment

6.4

Crew

7.7

Food

6.4

Reviews

1 / 20
10.0
Excellent

Viorica,Mar 2026

PHX - LHR

The food lately is just from poor to very poor. I bealeave that you can serve less quantities for more quality food. Exemple : at breakfast : omlete and vegetarian omlete ....I beleave with less work less personel could be provide some hummus and carrots and some boiled egss plus whatever snacks or drinks you wish....... Thank you in advance

Related info for your journey

Find useful and relevant information for your journey from Denver to Belfast Intl. 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 Belfast Intl?

    For a flight from Denver to Belfast Intl, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 0 outbound flights to Belfast Intl per day. 1 airline has flights to Belfast Intl from Denver Intl on a regular basis.

  • What is the cheapest airline to fly from Denver to Belfast Intl Airport round-trip?

    Currently priced at $679, British Airways will fly you from Denver to Belfast Intl Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from Denver to Belfast Intl that include hotel bookings?

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

  • How can I find direct flights from Denver to Belfast Intl?

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

  • Can I find deals for business class flights from Denver to Belfast Intl?

    Yes. Cheapflights offers flight deals from Denver to Belfast Intl 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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Other flights to Belfast Intl

Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 13, 2026.
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Top airline flying from Denver to Belfast Intl

Discover the top airline that operate flights from Denver to Belfast Intl. 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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$679Average$1,099FlexibilityNo cancel feeOn-time70%

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