The cheapest times to fly from SLU to SFO are

  • January 8th to February 4th
  • March 19th to July 1st (except the week of April 2nd)
  • October 15th to November 4th

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 SLU to SFO is early to mid May. Prices can be as high as $1824 for Saturday flights during early August, or as low as $776 for Tuesday flights around early to mid May.


When to Fly to San Francisco

Flying from St. Lucia (SLU) to San Francisco, CA (SFO) will usually cost between $782 to $1508 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid May with an average ticket price of $817. Due to high demand the most expensive time to fly is early August, with an average price of $1721. Planning your trip to low-cost times can easily save you $904 on economy flights and even more on first-class flights. Generally, any price below $1030 can be considered a good price for a round-trip SLU to SFO flight.

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

SLU to SFO Flight Prices

Compared to other flights, the SLU to SFO flight is priced close to the average and costs less than the average flight leaving from Saint Lucia. The average price per mile (for a direct flight) is $0.16, 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 $171 (15%) 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 $894. Return trip prices are from the SFO to SLU 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 SLU to SFO 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 19 minutes may not be realistic.


Flight Hacking SLU 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 SLU to SFO — but Champion Traveler does!

Hack #1: Port of Spain (SLU > POS > SFO)

  • Price for both tickets: $829
  • Average savings: $202 (19.56%)

See SLU to MIA flights

Hack #2: Miami, FL (SLU > MIA > SFO)

  • Price for both tickets: $966
  • Average savings: $65 (6.26%)

See SLU to POS flights

Hack #3: Fort Lauderdale, FL (SLU > FLL > SFO)

  • Price for both tickets: $977
  • Average savings: $54 (5.19%)

See SLU to FLL flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Air Canada, Air France, American, Caribbean Airlines, Delta, JetBlue, LIAT, United, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to George F Charles Airport?

The distance between the two airports is roughly 4071 miles or 6552 kilometers.

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

The real-world flight time for a nonstop SLU to SFO flight is about 8 hour 19 minutes.

How many flights go between St. Lucia and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 14 available flights from SLU to SFO.


Airport Location Info


Departing Airport

Origination codeSLU
Origination airport nameGeorge F Charles Airport
CitySt. Lucia
CountrySt Lucia

Return Airport

Destination codeSFO
Destination airport nameSan Francisco International Airport
CitySan Francisco, CA
Countrythe United States


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.