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Cheap flights from Saint John to San Francisco from C$ 490

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — SFO
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from St John to San Francisco
Explore the most affordable flight options available from St John to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 March 2026.

Wed 16/95:40 a.m.
YSJ
-
SFO
1 stop10h 54m
Air Canada
Sat 19/911:35 a.m.
SFO
-
YSJ
1 stop8h 16m
Air Canada
Deal found 19/3C$ 737
Wed 29/75:00 a.m.
YSJ
-
SFO
1 stop9h 42m
Air Canada
Sat 8/84:30 p.m.
SFO
-
YSJ
1 stop15h 25m
Air Canada
Deal found 22/3C$ 774
Wed 29/75:00 a.m.
YSJ
-
SFO
1 stop11h 32m
United Airlines
Sat 8/86:10 a.m.
SFO
-
YSJ
2 stops14h 45m
United Airlines
Deal found 22/3C$ 855
Sat 18/45:35 a.m.
YSJ
-
SFO
2 stops13h 57m
Air Canada
Sat 25/48:30 a.m.
SFO
-
YSJ
2 stops22h 45m
Air Canada
Deal found 19/3C$ 880
Sat 18/45:35 a.m.
YSJ
-
SFO
1 stop9h 20m
United Airlines
Sat 25/411:52 p.m.
SFO
-
YSJ
2 stops31h 23m
United Airlines
Deal found 19/3C$ 948

Find flight deals from St John to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from St John (YSJ) to San Francisco (SFO). 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 24 March 2026.

Round-trip from

C$ 737

One-way from

C$ 490
Air Canada
  • Air Canada
  • 16/9-19/9
  • 2 total stops
  • 19h 10m total
  • Saint John to San Francisco
Search Deals
Air Canada
  • Air Canada
  • 23/8
  • 1 total stop
  • 9h 42m total
  • Saint John to San Francisco
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to San Francisco 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 629,999 searches. Data last updated 24 March 2026.
Use the filters below to find and compare flights from Saint John to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 16/9

5:40 a.m.-3:21 p.m.

2 stops13h 41m

San Francisco

Sat 19/9

11:35 a.m.-11:51 p.m.

1 stop8h 16m

C$ 737

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 29/7

5:00 a.m.-10:42 a.m.

1 stop9h 42m

San Francisco

Sat 8/8

4:30 p.m.-11:55 a.m.

1 stop15h 25m

C$ 774

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 29/7

5:00 a.m.-12:32 p.m.

1 stop11h 32m

San Francisco

Sat 8/8

6:10 a.m.-12:55 a.m.

2 stops14h 45m

C$ 855

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sat 18/4

5:35 a.m.-3:32 p.m.

2 stops13h 57m

San Francisco

Sat 25/4

8:30 a.m.-11:15 a.m.

2 stops22h 45m

C$ 880

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sat 18/4

5:35 a.m.-10:55 a.m.

1 stop9h 20m

San Francisco

Sat 25/4

11:52 p.m.-11:15 a.m.

2 stops31h 23m

C$ 948
Cheapest one-way
Quickest one-way

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sun 23/8

5:00 a.m.-10:42 a.m.

1 stop9h 42m

C$ 490

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sun 23/8

5:00 a.m.-9:28 p.m.

2 stops20h 28m

C$ 495

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/3

Sorted by cheapest first

Best time to book a flight from St John to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from St John with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Saint John to San Francisco

What is the cheapest month to book a flight from Saint John to San Francisco?

Currently, June is the cheapest month in which you can book a flight from Saint John to San Francisco (average of C$ 331). Flying from Saint John to San Francisco in March is currently the most expensive (average of C$ 749). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from St John to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Saint John to San Francisco?

    For as low as C$ 737, Air Canada can have you in San Francisco from Saint John in 13h 41m. Saint John and San Francisco are separated by a distance of 4682 km.

  • Can I find deals for flights from St John to San Francisco that include hotel bookings?

    Yes. In addition to deals on St John to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St John to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St John to San Francisco.

  • Can I find deals for business class flights from St John to San Francisco?

    Yes. Cheapflights offers flight deals from St John to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Saint John to San Francisco?

    Currently, June is the cheapest month in which you can book a flight from Saint John to San Francisco (average of C$ 331). Flying from Saint John to San Francisco in March is currently the most expensive (average of C$ 749). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Burlingame
Roseville
Livermore
South San Francisco
Novato
Santa Clara
Vallejo

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How does Cheapflights help users find flights from St John to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St John to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from St John to San Francisco?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from St John.

Can Cheapflights find flights from St John to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from St John shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St John to San Francisco become cheaper?

Of course! You can now track prices for flights from St John to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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