The cheapest times to fly from YAM to SFO are

  • March 19th to April 22nd (except the week of April 9th)
  • October 8th to March 4th (except the weeks of December 24th, January 1st, and February 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 YAM to SFO is mid to late November. Prices can be as high as $980 for Saturday flights during early August, or as low as $603 for Tuesday flights around mid to late November.


When to Fly to San Francisco

Flying from Sault Ste. Marie (YAM) to San Francisco, CA (SFO) will usually cost between $607 to $933 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late November with an average ticket price of $605. Due to high demand the most expensive time to fly is early August, with an average price of $937. Planning your trip to low-cost times can easily save you $332 on economy flights and even more on first-class flights. Generally, any price below $845 can be considered a good price for a round-trip YAM to SFO flight.

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

YAM to SFO Flight Prices

Compared to other flights, the YAM to SFO flight is cheaper than the average and costs more than the average flight leaving from Sault Ste. Marie. The average price per mile (for a direct flight) is $0.26, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to SFO, and Wednesday the cheapest day to fly back into YAM. Saturdays are the most expensive days to fly to San Francisco, and Sundays are the most expensive days to return to Sault Ste. Marie. Selecting flights on the least expensive days could save you up to $31 (3%) 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 $801. Return trip prices are from the SFO to YAM 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 YAM 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 4 hour 37 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from YAM to SFO while comparing.

Destination alternative #1: Norman Y. Mineta San Jose International Airport (SJC) in San Jose, CA

  • 30 miles (48 km) away from SFO
  • Usually 27.10% less expensive than SFO
  • 1-layover flights available

See YAM to SJC flights


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

Hack #1: Toronto (YAM > YYZ > SFO)

  • Price for both tickets: $652
  • Average savings: $193 (22.84%)

See YAM to LGA flights

Hack #2: New York, NY (YAM > LGA > SFO)

  • Price for both tickets: $716
  • Average savings: $130 (15.33%)

See YAM to YYZ flights

Hack #3: Thunder Bay (YAM > YQT > SFO)

  • Price for both tickets: $719
  • Average savings: $127 (14.97%)

See YAM to YQT flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 4 major airlines flying this route most often: Air Canada, American, Bearskin Lake Air Services, United, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to Sault Ste. Marie Airport?

The distance between the two airports is roughly 2015 miles or 3243 kilometers.

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

The real-world flight time for a nonstop YAM to SFO flight is about 4 hour 37 minutes.

How many flights go between Sault Ste. Marie and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 8 available flights from YAM to SFO.


Airport Location Info


Departing Airport

Origination code YAM
Origination airport name Sault Ste. Marie Airport
City Sault Ste. Marie
Country Canada
Latitude 46.5
Longitude -84.5

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.