The cheapest times to fly from YWL to SFO are

  • October 8th to March 11th (except the week of 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 YWL to SFO is late October. Prices can be as high as $952 for Saturday flights during late May, or as low as $452 for Wednesday flights around late October.


When to Fly to San Francisco

Flying from Williams Lake (YWL) to San Francisco, CA (SFO) will usually cost between $453 to $837 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October with an average ticket price of $502. Due to high demand the most expensive time to fly is late May, with an average price of $856. Planning your trip to low-cost times can easily save you $354 on economy flights and even more on first-class flights. Generally, any price below $625 can be considered a good price for a round-trip YWL to SFO flight.

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

YWL to SFO Flight Prices

Compared to other flights, the YWL to SFO flight is cheaper than the average and costs slightly more than the average flight leaving from Williams Lake. The average price per mile (for a direct flight) is $0.39, which is a bit above average.


Flight Prices by Day of the Week

Wednesday 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 $159 (22%) 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 $553. Return trip prices are from the SFO to YWL 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 YWL 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 2 hour 48 minutes may not be realistic.


Flight Questions Answered

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

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Air Canada, Alaska, CMA, Delta, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 1006 miles or 1619 kilometers.

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

The real-world flight time for a nonstop YWL to SFO flight is about 2 hour 48 minutes.

How many flights go between Williams Lake and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 19 available flights from YWL to SFO.


Airport Location Info


Departing Airport

Origination code YWL
Origination airport name Williams Lake Airport
City Williams Lake
Country Canada
Latitude 52.2
Longitude -122.1

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

Flights to YWL

Flights from YWL

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.