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Belfast Intl

$480+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$1,416
(Mytrip)

One-way from

$480
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$699
From Denver Intl to Belfast Intl
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One-way flight from Denver Intl to Belfast Intl
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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 September 2025
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Find 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/9. 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 10/17:55 pmDEN - BFS
2 stops18h 25mMultiple Airlines
Sun 10/510:00 amBFS - DEN
2 stops14h 59mMultiple Airlines
Deal found 9/9$1,416

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 September 11, 2025.
Use the filters below to find and compare flights from Denver to Belfast Intl Airport that are best for you.

Fly from

Denver

Fly to

Belfast Intl

Route

Depart

Return

Price

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 10/1

7:55 pm-9:20 pm

2 stops18h 25m

Belfast Intl

Sun 10/5

10:00 am-5:59 pm

2 stops14h 59m

$1,416

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 9/16

11:15 am-8:25 am

3 stops38h 10m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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.

Cheapflights Insights

Everything you need to know about your flight from Denver to Belfast Intl Airport

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

Find hourly flight availability from Denver to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s optimal to fly from Denver to Belfast Intl Airport in the morning. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight at noon.

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 September 11, 2025.
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
7,361 reviews

Entertainment

6.4

Boarding

6.9

Comfort

6.7

Crew

7.6

Overall

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
7,361 reviews
British Airways
6.7
Okay
7,361 reviews

Entertainment

6.4

Boarding

6.9

Comfort

6.7

Crew

7.6

Overall

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 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 $655, 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. Users have found that British Airways is 25% cheaper than the other options available to this destination.

  • 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.

  • What is the cheapest month to book a flight from Denver to Belfast Intl Airport?

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

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Alternative routes for Denver to Belfast Intl

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Denver to Belfast City flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$655Average$924FlexibilityNo cancel feeOn-time70%

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