$399 Cheap Flights from San Francisco (SFO) to Sudbury (YSB)

View $399 flight on Sun, Nov 2, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Sudbury, ON (YSB-Greater Sudbury)

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Cheap Flights from San Francisco to Sudbury (SFO-YSB)

Prices were available within the past 7 days and start at $399 for one-way flights and $625 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Nov 4 - Sat, Nov 8
SFO
San Francisco
YSB
Sudbury
$625 Roundtrip, found 3 days ago
$625
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 4 from San Francisco to Sudbury, returning Sat, Nov 8, priced at $625 found 3 days ago
Air Canada
Wed, Nov 5 - Fri, Nov 7
SFO
San Francisco
YSB
Sudbury
$639 Roundtrip, found 3 days ago
$639
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 5 from San Francisco to Sudbury, returning Fri, Nov 7, priced at $639 found 3 days ago
Air Canada
Wed, Nov 5 - Sat, Nov 8
SFO
San Francisco
YSB
Sudbury
$644 Roundtrip, found 3 days ago
$644
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 5 from San Francisco to Sudbury, returning Sat, Nov 8, priced at $644 found 3 days ago
Air Canada
Tue, Nov 4 - Wed, Nov 12
SFO
San Francisco
YSB
Sudbury
$650 Roundtrip, found 3 days ago
$650
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 4 from San Francisco to Sudbury, returning Wed, Nov 12, priced at $650 found 3 days ago
Air Canada
Tue, Nov 4 - Sun, Nov 9
SFO
San Francisco
YSB
Sudbury
$656 Roundtrip, found 3 days ago
$656
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 4 from San Francisco to Sudbury, returning Sun, Nov 9, priced at $656 found 3 days ago
Air Canada
Thu, Oct 30 - Wed, Nov 5
SFO
San Francisco
YSB
Sudbury
$669 Roundtrip, found 3 days ago
$669
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Oct 30 from San Francisco to Sudbury, returning Wed, Nov 5, priced at $669 found 3 days ago
Air Canada
Thu, Oct 30 - Sat, Nov 8
SFO
San Francisco
YSB
Sudbury
$674 Roundtrip, found 3 days ago
$674
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Oct 30 from San Francisco to Sudbury, returning Sat, Nov 8, priced at $674 found 3 days ago
Air Canada
Sun, Nov 2 - Mon, Nov 3
SFO
San Francisco
YSB
Sudbury
$680 Roundtrip, found 1 day ago
$680
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Nov 2 from San Francisco to Sudbury, returning Mon, Nov 3, priced at $680 found 1 day ago
Air Canada
Tue, Nov 4 - Mon, Nov 10
SFO
San Francisco
YSB
Sudbury
$687 Roundtrip, found 3 days ago
$687
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 4 from San Francisco to Sudbury, returning Mon, Nov 10, priced at $687 found 3 days ago
United
Sun, Nov 2 - Mon, Nov 3
SFO
San Francisco
YSB
Sudbury
$697 Roundtrip, found 1 day ago
$697
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 2 from San Francisco to Sudbury, returning Mon, Nov 3, priced at $697 found 1 day ago
Flights from San Francisco (SFO) to Sudbury (YSB)
Origin airport
San Francisco Intl.
Destination airport
Greater Sudbury
Roundtrip price
$625
Distance
2192 mi

San Francisco to Sudbury Flights

The cheapest times to fly from San Francisco to Sudbury

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Sudbury are during the month of November. You can find some of the cheapest flights from San Francisco to Sudbury with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Sudbury

Sunday is one of the best days to book for cheap flights from San Francisco to Sudbury: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Sudbury

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Sudbury in 2025. You can also book with separate airlines for your outbound and return journeys, from $399 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Sudbury flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Sudbury airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB) cost?
Snag a cheap one-way flight from $399 or cheap return flight from $625 from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB)?
November is the cheapest month to fly from SFO to YSB. Avoiding peak travel times is often the key to better flight prices.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SFO to YSB flight.
How many flights per day from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB)?
There aren't any daily direct flights from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SFO to YSB?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB)?
Choose a flight from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB) last-minute?
Last-minute bookings from SFO to YSB are usually more expensive. To lock in the cheapest rates, start searching for flights ahead of time. That said, if your travel plans are flexible, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a SFO to YSB flight and hotel package?
You'll generally save money by booking a SFO to YSB flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your ideal flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Greater Sudbury Airport (YSB)?
If you booked your SFO to YSB flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.