Find flights
When to book
Airlines
FAQs

Cheap flights from Belfast Intl Airport to Denver from £842

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — DEN
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Belfast Intl to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Denver
Explore the most affordable flight options available from Belfast Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Tue 30/1206:00BFS - DEN
2 stops35h 23mMultiple Airlines
Fri 9/111:20DEN - BFS
2 stops18h 55mMultiple Airlines
Deal found 30/10£842
Sun 28/1223:05BFS - DEN
3 stops41h 03mMultiple Airlines
Fri 9/115:40DEN - BFS
2 stops14h 25mMultiple Airlines
Deal found 30/10£994

Cheap flight deals from Belfast Intl to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Denver (DEN). 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 31 October 2025.

Round-trip from

£842
30/12-9/1
  • 30/12-9/1
  • 4 total stops
  • 54h 18m total
  • Belfast to Denver
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to Denver 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 858,174 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Denver that are best for you.

Fly from

Belfast Intl

Fly to

Denver

Route

Depart

Return

Price

BelfastDenver

BFS - DEN

BFSDEN

Belfast Intl

Tue 30/12

06:00-10:23

2 stops35h 23m

Denver Intl

Fri 9/1

11:20-13:15

2 stops18h 55m

£842

BelfastDenver

BFS - DEN

BFSDEN

Belfast Intl

Sun 28/12

23:05-09:08

3 stops41h 03m

Denver Intl

Fri 9/1

15:40-13:05

2 stops14h 25m

£994

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Best time to book a flight from Belfast Intl to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Belfast Intl with our price prediction graph.
Estimated return 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 Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated 31 October 2025.
Read through reviews of airlines operating flights from Belfast Intl Airport to Denver, such as British Airways. 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
7,487 reviews
Check prices

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,487 reviews
British Airways
6.7
Okay
7,487 reviews
Check prices

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

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

    For a flight from Belfast Intl to Denver, you will be flying into 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 inbound flights from Belfast Intl per day. 1 airline has flights to Denver Intl from Belfast Intl on a regular basis.

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

    Currently priced at £522, British Airways will fly you from Belfast Intl Airport to Denver and back. In addition to British Airways, many other airlines offer competitively priced options for your trip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl to Denver 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

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Winter Park
Frisco

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Belfast Intl to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Belfast City to Colorado Springs flights
Belfast City to Denver flights

Top airline flying from Belfast Intl to Denver

Discover the top airline that operate flights from Belfast Intl to Denver. 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 858,174 searches. Data last updated 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£522Average£679FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast Intl to Denver?

When you search for this flight from Belfast Intl to Denver, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to Denver?

Cheapflights simply makes it quick and affordable to book flights from Belfast Intl to Denver by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Belfast Intl to Denver with no change fees?

Certainly. Search results for flights to Denver from Belfast Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Belfast Intl to Denver become cheaper?

Yes, Cheapflights offers price alerts on Belfast Intl to Denver flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.