$190 Cheap Delta flights Toronto (YYZ) to San Francisco (SFO)

Set the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines round-trip flights from $323 from YYZ to SFO. Affordable one-way tickets from $190 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for return or one-way flights to San Francisco in February or April. You could find a cheap fare with Delta Air Lines during these quieter months.

Check for Delta Air Lines flights from YYZ to SFO about one month before you want to leave. The cheapest time to book an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of fare class or itinerary, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Travelers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To figure out if there’s a direct route from YYZ to SFO with Delta Air Lines or another airline, select the “Nonstop” filter when searching for flights.

To find the earliest departures from YYZ to SFO with Delta Air Lines, sort your results by “Early Morning” and “Morning.” Choosing an early flight usually means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Pearson Intl. Airport (YYZ) to San Francisco come in to San Francisco Intl. Airport (SFO). This is the main entry point here.

With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is the leading choice for many travelers flying from YYZ to SFO. Plus, if you’re a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee will generally apply if you cancel or change your flight more than 24 hours after it has been confirmed. To secure flexible fares, select our “No cancel fee” or “Changes included” filter when searching for flights. For more information on modifying or canceling your reservation, head to “Trips,” select your flight and click on “Manage Booking.”