BFS - DEN

£851 Find Cheap Flights from Belfast Intl Airport to Denver – Compare and Save

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Denver departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return fare
£851
Multiple Airlines
Wed 2/9Wed 16/9
BFS - DEN • 2 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Belfast Intl to Denver (BFS-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast Intl to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Belfast Intl to Denver

Wed, 2 Sep - Wed, 16 Sep
Multiple Airlines Logo
08:15 - 12:40BFS  Belfast Intl-DEN Denver Intl
35h 25m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
16:40 - 19:40DEN  Denver Intl-BFS Belfast Intl
20h 00m2 stops Reykjavik Keflavik Intl London Gatwick
£851Multiple Airlines
Wed, 2 Sep - Wed, 16 Sep
Multiple Airlines Logo
07:35 - 11:20BFS  Belfast Intl-DEN Denver Intl
34h 45m3 stops Glasgow Intl Toronto Pearson Intl Calgary
Multiple Airlines Logo
11:35 - 19:15DEN  Denver Intl-BFS Belfast Intl
24h 40m2 stops Toronto Pearson Intl Edinburgh Turnhouse
£943Multiple Airlines
Wed, 2 Sep - Wed, 16 Sep
Multiple Airlines Logo
07:35 - 11:20BFS  Belfast Intl-DEN Denver Intl
34h 45m3 stops Glasgow Intl Toronto Pearson Intl Calgary
Multiple Airlines Logo
11:25 - 22:20DEN  Denver Intl-BFS Belfast Intl
27h 55m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Manchester
£946Multiple Airlines
Wed, 2 Sep - Wed, 16 Sep
Multiple Airlines Logo
06:15 - 15:40BFS  Belfast Intl-DEN Denver Intl
16h 25m1 stop Paris Charles de Gaulle
Multiple Airlines Logo
20:00 - 22:50DEN  Denver Intl-BFS Belfast Intl
43h 50m2 stops Dublin Paris Charles de Gaulle
£1,631Multiple Airlines
Useful Info

Good to know - Cheap tickets from Belfast Intl Airport to Denver

Cheapest flight

£851
Flight from Belfast Intl Airport to Denver

When to book flights from Belfast Intl to Denver

Are your dates flexible? Find out the best times to travel from Belfast Intl to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast Intl Airport to Denver flights

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

    In the last 5 days, the lowest price for a flight from Belfast Intl Airport to Denver was £851 for a return ticket.

  • Which aircraft models fly most regularly from Belfast Intl Airport to Denver?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Belfast Intl Airport to Denver?

    oneworld is the only airline alliance operating flights between Belfast Intl Airport and Denver.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Belfast Intl Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to Belfast Intl Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Belfast Intl to Denver

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Belfast Intl to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8150 reviews
7.0Boarding
6.4Food
6.8Comfort
6.5Entertainment
7.7Crew
Airline reviews

Long line with check in at the DIA British Airway counter.

8.0 ExcellentAudrey, May 2026
Read more British Airways reviews

Long line with check in at the DIA British Airway counter.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

Everything excellent except for bag drop off. We started at the D area and that was so slow that it was eventually closed just as we were about to go to a station. We then went to F. We got one suitcase checked and then the screen showed that the station was no longer operable. There were long lines everywhere so we had to ask if we could butt in to the next station to finish. Again, this was the only incident, otherwise it was an excellent flying experience

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

We never made it onto this flight due to BA's lackluster organisation.

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

The seat was very uncomfortable. It helped to use the foot rest. Could not sleep because of the seat.

The crew was so unfriendly. Our (the last) section of the plane only got drink service once during an over 9 hour flight. When it come to the main meal service we only got a vegetarian option and where told the chicken option gone. About 30 minutes later I went to the bathroom and lo and behold the whole crew were eating the chicken option.

Everything you need to know for your flight from Belfast Intl to Denver

Information on your arrival and departure airports