The cheapest times to fly from DEN to BFS are

  • May 7th to June 3rd
  • August 13th to October 21st

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEN to BFS is mid October. Prices can be as high as $3854 for Saturday flights during early to mid June, or as low as $615 for Thursday flights around mid October.


When to Fly to Belfast

Flying from Denver, CO (DEN) to Belfast (BFS) will usually cost between $677 to $1777 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid October with an average ticket price of $623. Due to high demand the most expensive time to fly is early to mid June, with an average price of $2816. Planning your trip to low-cost times can easily save you $2193 on economy flights and even more on first-class flights. Generally, any price below $990 can be considered a good price for a round-trip DEN to BFS flight.

See below for a graph of average weekly prices for the DEN to BFS route. All prices are for round-trip tickets in USD.

DEN to BFS Flight Prices

Compared to other flights, the DEN to BFS flight is priced close to the average and costs about as much as the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.14, which is far below average.


Flight Prices by Day of the Week

Thursday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $924 (48%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $898. Return trip prices are from the BFS to DEN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DEN to BFS can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 47 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from DEN to BFS while comparing.

Destination alternative #1: Dublin Airport (DUB) in Dublin

  • 85 miles (137 km) away from BFS
  • Usually 28.74% less expensive than BFS
  • 1-layover flights available

See DEN to DUB flights

Destination alternative #2: Belfast City Airport (BHD) in Belfast

  • 14 miles (23 km) away from BFS
  • Usually 17.42% less expensive than BFS
  • 1-layover flights available

See DEN to BHD flights

Destination alternative #3: Edinburgh Airport (EDI) in Edinburgh

  • 144 miles (232 km) away from BFS
  • Usually 3.28% less expensive than BFS
  • 1-layover flights available

See DEN to EDI flights

Destination alternative #4: Glasgow Airport (GLA) in Glasgow

  • 109 miles (175 km) away from BFS
  • Usually 0.51% less expensive than BFS
  • 1-layover flights available

See DEN to GLA flights


Flight Hacking DEN to BFS

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from DEN to BFS — but Champion Traveler does!

Hack #1: London (DEN > LGW > BFS)

  • Price for both tickets: $649
  • Average savings: $342 (34.49%)

See DEN to LGW flights

Hack #2: New York, NY (DEN > JFK > BFS)

  • Price for both tickets: $773
  • Average savings: $217 (21.92%)

See DEN to JFK flights

Hack #3: Manchester (DEN > MAN > BFS)

  • Price for both tickets: $811
  • Average savings: $180 (18.13%)

See DEN to MAN flights


Flight Questions Answered

Still have questions about flying from DEN to BFS? We’ve got answers.

Which airlines fly this route?

You can find 2 major airlines flying this route most often: Air France, Delta, and potentially more during busy seasons.

How far away is it from Belfast Aldergrove Airport to Denver International Airport?

The distance between the two airports is roughly 4336 miles or 6978 kilometers.

How long does it take to fly from DEN to BFS?

The real-world flight time for a nonstop DEN to BFS flight is about 8 hour 47 minutes.

How many flights go between Denver, CO and Belfast?

It depends on the day of the week and the date, but a typical day might have around 23 available flights from DEN to BFS.


Airport Location Info


Departing Airport

Origination code DEN
Origination airport name Denver International Airport
City Denver, CO
Country the United States
Latitude 39.9
Longitude -104.7

Return Airport

Destination code BFS
Destination airport name Belfast Aldergrove Airport
City Belfast
Country the United Kingdom
Latitude 54.7
Longitude -6.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.