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Cheap flights from Saint John to San Francisco from C$ 348

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — SFO
7 Jul — 14 Jul1
1 adult

Cheap 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 2 July 2025.

Round-trip from

C$ 767

One-way from

C$ 348
United Airlines
  • United Airlines
  • 24/8-30/8
  • 4 total stops
  • 29h 33m total
  • Saint John to San Francisco
Search Deals
Air Canada
  • Air Canada
  • 15/8
  • 1 total stop
  • 10h 58m total
  • Saint John to San Francisco
Search Deals

Find flight deals from St John to San Francisco

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 2 July 2025.

Sun 24/85:55 a.m.YSJ - SFO
2 stops15h 52mUnited Airlines
Sat 30/811:59 p.m.SFO - YSJ
2 stops13h 41mUnited Airlines
Deal found 2/7C$ 767
Sun 24/86:40 p.m.YSJ - SFO
1 stop19h 58mAir Canada
Sat 30/812:15 p.m.SFO - YSJ
1 stop9h 15mAir Canada
Deal found 2/7C$ 796

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 2 July 2025.
Use the filters below to find and compare flights from Saint John to San Francisco that are best for you.

Fly from

St John

Fly to

San Francisco

Route

Depart

Return

Price

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sun 24/8

5:55 a.m.-5:47 p.m.

2 stops15h 52m

San Francisco

Sat 30/8

11:59 p.m.-5:40 p.m.

2 stops13h 41m

C$ 767

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sun 24/8

6:40 p.m.-10:38 a.m.

1 stop19h 58m

San Francisco

Sat 30/8

12:15 p.m.-1:30 a.m.

1 stop9h 15m

C$ 796

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Fri 15/8

5:55 a.m.-12:53 p.m.

1 stop10h 58m

C$ 348

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Fri 15/8

10:45 a.m.-11:59 p.m.

3 stops17h 14m

C$ 409

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Sun 17/8

5:55 a.m.-7:41 a.m.

2 stops29h 46m

C$ 487

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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, January is the cheapest month in which you can book a flight from Saint John to San Francisco (average of C$ 276). Flying from Saint John to San Francisco in December is currently the most expensive (average of C$ 368). 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.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated 2 July 2025.
Get a feel of what it's like to fly with United Airlines and Air Canada from Saint John to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,861 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,861 reviews
United Airlines
7.4
Good
8,861 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,669 reviews
United Airlines
7.4
Good
8,861 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • What are the cheapest airlines flying from Saint John to San Francisco round-trip?

    United Airlines, at C$ 767, was found to be the cheapest airline from Saint John to San Francisco. An alternate airline flying to your destination would be Air Canada.

  • 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, January is the cheapest month in which you can book a flight from Saint John to San Francisco (average of C$ 276). Flying from Saint John to San Francisco in December is currently the most expensive (average of C$ 368). 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 Saint John?

Book flights to Saint John if you plan to visit one of these locations
Richmond
San Ramon
Newark
Alameda
Redwood City
Burlingame
San Bruno
South San Francisco
Scotts Valley
Novato
Belmont
Millbrae
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from St John to San Francisco

Discover the top airline that operate flights from St John to San Francisco. 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 629,999 searches. Data last updated 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 542AverageC$ 1,046FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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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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