The cheapest times to fly from BLL to SFO are

  • January 8th to March 25th
  • April 16th to June 17th (except the week of May 7th)
  • October 22nd to December 9th

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 BLL to SFO is early December. Prices can be as high as $969 for Saturday flights during mid July, or as low as $362 for Tuesday flights around early December.


When to Fly to San Francisco

Flying from Billund (BLL) to San Francisco, CA (SFO) will usually cost between $371 to $851 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $378. Due to high demand the most expensive time to fly is mid July, with an average price of $878. Planning your trip to low-cost times can easily save you $500 on economy flights and even more on first-class flights. Generally, any price below $405 can be considered a good price for a round-trip BLL to SFO flight.

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

BLL to SFO Flight Prices

Compared to other flights, the BLL to SFO flight is much cheaper than the average and costs less than the average flight leaving from Billund. The average price per mile (for a direct flight) is $0.05, which is far below average.


Flight Prices by Day of the Week

Tuesday 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 $73 (8%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $427. Return trip prices are from the SFO to BLL 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 BLL to SFO can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 40 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from BLL to SFO? We’ve got answers.

Which airlines fly this route?

You can find 25 major airlines flying this route most often: Air Canada, Air France, Alaska, Alitalia, American, atlasglobal, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, Norwegian, SAS, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to Billund Airport?

The distance between the two airports is roughly 5384 miles or 8665 kilometers.

How long does it take to fly from BLL to SFO?

The real-world flight time for a nonstop BLL to SFO flight is about 10 hour 40 minutes.

How many flights go between Billund and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 73 available flights from BLL to SFO.


Airport Location Info


Departing Airport

Origination code BLL
Origination airport name Billund Airport
City Billund
Country Denmark
Latitude 55.7
Longitude 9.2

Return Airport

Destination code SFO
Destination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4


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.