The cheapest times to fly from GAJ to SFO are

  • January 8th to July 1st (except the weeks of March 12th, March 19th, April 23rd, April 30th, and June 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 GAJ to SFO is early to mid May. Prices can be as high as $3552 for Saturday flights during early to mid August, or as low as $1204 for Tuesday flights around early to mid May.


When to Fly to San Francisco

Flying from Yamagata (GAJ) to San Francisco, CA (SFO) will usually cost between $1204 to $1837 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 $1270. Due to high demand the most expensive time to fly is early to mid August, with an average price of $2174. 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 $1407 can be considered a good price for a round-trip GAJ to SFO flight.

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

GAJ to SFO Flight Prices

Compared to other flights, the GAJ to SFO flight is slightly more expensive than the average and costs more than the average flight leaving from Yamagata. The average price per mile (for a direct flight) is $0.17, which is 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 $237 (11%) 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 $1346. Return trip prices are from the SFO to GAJ 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 GAJ 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 9 hour 60 minutes may not be realistic.


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

Hack #1: Tokyo (GAJ > HND > SFO)

  • Price for both tickets: $1050
  • Average savings: $358 (25.41%)

See GAJ to LAX flights

Hack #2: Los Angeles, CA (GAJ > LAX > SFO)

  • Price for both tickets: $1241
  • Average savings: $166 (11.8%)

See GAJ to HND flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Alaska, American, ANA, Delta, Garuda Indonesia, Hawaiian, JAL, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5008 miles or 8060 kilometers.

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

The real-world flight time for a nonstop GAJ to SFO flight is about 9 hour 60 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 16 available flights from GAJ to SFO.


Airport Location Info


Departing Airport

Origination code GAJ
Origination airport name Yamagata Airport
City Yamagata
Country Japan
Latitude 38.4
Longitude 140.4

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.