The cheapest times to fly from HSG to SFO are

  • January 8th to March 4th
  • March 26th to July 1st (except the weeks of April 23rd and April 30th)

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 HSG to SFO is early to mid May. Prices can be as high as $2139 for Saturday flights during early August, or as low as $1300 for Tuesday flights around early to mid May.


When to Fly to San Francisco

Flying from Saga (HSG) to San Francisco, CA (SFO) will usually cost between $1300 to $1779 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 $1349. Due to high demand the most expensive time to fly is early August, with an average price of $1779. Planning your trip to low-cost times can easily save you $430 on economy flights and even more on first-class flights. Generally, any price below $1394 can be considered a good price for a round-trip HSG to SFO flight.

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

HSG to SFO Flight Prices

Compared to other flights, the HSG to SFO flight is slightly more expensive than the average and costs less than the average flight leaving from Saga. The average price per mile (for a direct flight) is $0.15, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SFO, and Monday the cheapest day to fly back into HSG. 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 $198 (13%) 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 $1345. Return trip prices are from the SFO to HSG 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 HSG 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 11 hour 12 minutes may not be realistic.


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

Hack #1: Shanghai (HSG > PVG > SFO)

  • Price for both tickets: $1107
  • Average savings: $287 (20.59%)

See HSG to HND flights

Hack #2: Tokyo (HSG > HND > SFO)

  • Price for both tickets: $1214
  • Average savings: $181 (12.95%)

See HSG to PVG flights

Hack #3: Seoul (HSG > ICN > SFO)

  • Price for both tickets: $1223
  • Average savings: $172 (12.3%)

See HSG to ICN flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Air Canada, Alaska, American, ANA, Hawaiian, JAL, Singapore Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5676 miles or 9135 kilometers.

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

The real-world flight time for a nonstop HSG to SFO flight is about 11 hour 12 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 9 available flights from HSG to SFO.


Airport Location Info


Departing Airport

Origination codeHSG
Origination airport nameSaga Airport

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.