The cheapest times to fly from LIL to SFO are

  • January 8th to April 1st
  • April 23rd to May 20th (except the week of May 7th)
  • August 27th to December 9th (except the weeks of September 3rd, September 17th, October 22nd, and November 12th)

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 LIL to SFO is mid January. Prices can be as high as $2672 for Friday flights during early August, or as low as $391 for Wednesday flights around mid January.


When to Fly to San Francisco

Flying from Lille (LIL) to San Francisco, CA (SFO) will usually cost between $432 to $1657 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid January with an average ticket price of $463. Due to high demand the most expensive time to fly is early August, with an average price of $1883. Planning your trip to low-cost times can easily save you $1420 on economy flights and even more on first-class flights. Generally, any price below $852 can be considered a good price for a round-trip LIL to SFO flight.

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

LIL to SFO Flight Prices

Compared to other flights, the LIL to SFO flight is cheaper than the average and costs slightly more than the average flight leaving from Lille. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to SFO, and Monday the cheapest day to fly back into LIL. Fridays are the most expensive days to fly to San Francisco, and Saturdays are the most expensive days to return to Lille. Selecting flights on the least expensive days could save you up to $314 (18%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $753. Return trip prices are from the SFO to LIL 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 LIL 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 53 minutes may not be realistic.


Flight Hacking LIL to SFO

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 LIL to SFO — but Champion Traveler does!

Hack #1: Nantes (LIL > NTE > SFO)

  • Price for both tickets: $592
  • Average savings: $260 (30.48%)

See LIL to NCE flights

Hack #2: Nice (LIL > NCE > SFO)

  • Price for both tickets: $604
  • Average savings: $248 (29.13%)

See LIL to NTE flights

Hack #3: Toulouse (LIL > TLS > SFO)

  • Price for both tickets: $708
  • Average savings: $144 (16.85%)

See LIL to TLS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air France, Delta, Iberia, KLM, Lufthansa, SWISS, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5503 miles or 8856 kilometers.

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

The real-world flight time for a nonstop LIL to SFO flight is about 10 hour 53 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 13 available flights from LIL to SFO.


Airport Location Info


Departing Airport

Origination code LIL
Origination airport name Lille Lesquin Airport
City Lille
Country France
Latitude 50.6
Longitude 3.1

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.