$323+ Cheap flights from San Francisco (SFO) to Sudbury, ON (YSB)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YSB
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Sudbury with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Sudbury
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to SudburyExplore the most affordable flight options available from San Francisco to Sudbury. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from San Francisco to Sudbury. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:10 am -
1 stop8h 17m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![Air Canada logo]()
$470
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 am -
2 stops11h 27m
Tue 10/138:05 pm -
2 stops18h 20m
Deal found 9/8![United Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:55 pm -
2 stops19h 50m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![United Airlines logo]()
$590
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:35 am -
1 stop23h 10m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![Air Canada logo]()
$682
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:10 am -
2 stops23h 35m
Sat 9/198:05 pm -
1 stop17h 39m
Deal found 9/8![Air Canada logo]()
$704
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:13 pm -
2 stops19h 14m
Sat 9/198:05 pm -
1 stop17h 39m
Deal found 9/7![United Airlines logo]()
$780
Best flights from San Francisco to SudburyDiscover carefully curated flight deals from San Francisco to Sudbury that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from San Francisco to Sudbury that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 am -
2 stops11h 27m
Tue 10/138:05 pm -
2 stops18h 20m
Deal found 9/8![United Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:55 pm -
2 stops19h 50m
Tue 10/138:05 pm -
2 stops20h 39m
Deal found 9/8![United Airlines logo]()
$605
Last-minute flights from San Francisco to SudburyDiscover last-minute flight deals from San Francisco to Sudbury. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Sudbury. Data last updated September 9, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:10 am -
2 stops23h 35m
Sat 9/198:05 pm -
1 stop17h 39m
Deal found 9/8![Air Canada logo]()
$704
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:13 pm -
2 stops19h 14m
Sat 9/198:05 pm -
1 stop17h 39m
Deal found 9/7![United Airlines logo]()
$780
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:55 pm -
2 stops19h 50m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![United Airlines logo]()
$590
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:35 am -
1 stop23h 10m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![Air Canada logo]()
$682
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:10 am -
1 stop8h 17m
Tue 10/138:05 pm -
1 stop16h 03m
Deal found 9/8![Air Canada logo]()
$470
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 am -
2 stops11h 27m
Tue 10/138:05 pm -
2 stops18h 20m
Deal found 9/8![United Airlines logo]()
$581
One-way flights from San Francisco to SudburySearch for one-way flight options from San Francisco to Sudbury. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from San Francisco to Sudbury. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 pm -
2 stops21h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$323
Find flight deals from San Francisco to Sudbury
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Sudbury (YSB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $470 (Air Canada) |
One-way from | $323 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Sudbury that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from San Francisco to Sudbury that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San FranciscoSudbury
SFO San Francisco - YSB Sudbury
SFOYSB
San Francisco
Thu 10/22
6:30 pm-7:27 pm
2 stops21h 57m
Sudbury
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$323
San FranciscoSudbury
SFO San Francisco - YSB Sudbury
SFOYSB
San Francisco
Sun 10/11
5:00 am-7:27 pm
2 stops11h 27m
Sudbury
Tue 10/13
8:05 pm-11:25 am
2 stops18h 20m
$581
San FranciscoSudbury
SFO San Francisco - YSB Sudbury
SFOYSB
San Francisco
Tue 10/6
2:55 pm-1:45 pm
2 stops19h 50m
Sudbury
Tue 10/13
8:05 pm-1:44 pm
2 stops20h 39m
$605
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Francisco-Sudbury, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Sudbury, Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Sudbury, Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Sudbury, Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Sudbury, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Sudbury
Have a flexible travel schedule? Discover the best time to fly to Sudbury from San Francisco with our price prediction graph.
SFO-YSB
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Sudbury
Get insights into the airlines that provide service to Sudbury. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sudbury. Reviews last updated September 9, 2026.
Read reviews from past customers who have flown Air Canada from San Francisco to Sudbury. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.3
Crew
7.8
Overall
7.1
Boarding
7.3
Entertainment
6.8
Comfort
7.1
Reviews
1 / 20
8.0
ExcellentDr vandana,Feb 2026
SFO - YYC
Food
6.3
Crew
7.8
Overall
7.1
Boarding
7.3
Entertainment
6.8
Comfort
7.1
Reviews
1 / 20
8.0
ExcellentDr vandana,Feb 2026
SFO - YYC
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Sudbury. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Sudbury by adding a car rental and/or hotel reservation to your travel itinerary.
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San Francisco and Sudbury flights
Browse other San Francisco and Sudbury flight options. Last updated on September 9, 2026.
Other flights from San Francisco
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Francisco to Sudbury
Discover the top airline that operate flights from San Francisco to Sudbury. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$639 | FlexibilityNo cancel fee | On-time67% |