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Cheap flights from London, ON to San Francisco Bay Area from C$ 583

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SFO
5 Jul — 12 Jul1
1 adult

Cheap flight deals from London to San Francisco Bay Area

Keep the following information in mind while searching for London to San Francisco Bay Area flight deals. Data was last updated 30 June 2025.

Round-trip from

C$ 583

Popular in

December

Cheapest in

May

Average price

C$ 406
Delta
  • Delta
  • 10/10-20/10
  • 2 total stops
  • 17h 31m total
  • London to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 243 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from London to San Francisco Bay Area

Cheapest flights from London to San Francisco Bay Area
Explore the most affordable flight options available from London to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 June 2025.

Fri 10/106:00 a.m.YXU - SFO
1 stop8h 54mDelta
Mon 20/107:30 a.m.SFO - YXU
1 stop8h 37mDelta
Deal found 28/6C$ 583
Fri 10/103:40 p.m.YXU - SFO
1 stop8h 13mAir Canada
Mon 20/1011:00 p.m.SFO - YXU
1 stop7h 17mAir Canada
Deal found 30/6C$ 632
Tue 1/76:00 a.m.YXU - SFO
2 stops21h 20mWestJet
Wed 30/76:05 p.m.SFO - YXU
1 stop8h 09mWestJet
Deal found 30/6C$ 1,010
Tue 1/76:15 a.m.YXU - SFO
1 stop9h 48mUnited Airlines
Tue 29/712:30 a.m.SFO - YXU
2 stops11h 32mUnited Airlines
Deal found 30/6C$ 1,072
Tue 1/78:00 p.m.YXU - SFO
2 stops16h 30mMultiple Airlines
Wed 30/710:15 a.m.SFO - YXU
3 stops15h 59mMultiple Airlines
Deal found 30/6C$ 1,655

Cheapflights Fare Finder

Customize your flight search to find flights from London to San Francisco Bay Area 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 30 June 2025.
Use the filters below to find and compare flights from London to San Francisco Bay Area that are best for you.

Fly from

London

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 10/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Mon 20/10

7:30 a.m.-7:07 p.m.

1 stop8h 37m

C$ 583

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 10/10

3:40 p.m.-8:53 p.m.

1 stop8h 13m

San Francisco

Mon 20/10

11:00 p.m.-9:17 a.m.

1 stop7h 17m

C$ 632

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/6

Best time to book a flight from London to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from London 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 London to San Francisco Bay Area

What is the cheapest month to book a flight from London, Ontario to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from London, Ontario to San Francisco Bay Area (average of C$ 276). Flying from London, Ontario to San Francisco Bay Area 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.

What is the cheapest time of day to fly from YXU to XIH?

Find hourly flight availability from London to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to San Francisco Bay Area as you normally would.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 Bay Area. Reviews last updated 30 June 2025.
Read through reviews of airlines operating flights from London to San Francisco Bay Area, such as Delta and Air Canada. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,969 reviews
Check prices

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews
Check prices

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.1
Good
9,657 reviews
Delta
8.0
Very good
7,969 reviews
Check prices

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • What airport do you fly from for flights from London to San Francisco Bay Area?

    Located just 8.6 km from the city centre, London (YXU) is the airport most travellers will use when flying to San Francisco Bay Area from London.

  • What are the most popular routes from London, Ontario to San Francisco Bay Area?

    The most popular route from London, Ontario to San Francisco Bay Area is London - San Jose. You may also consider London - San Francisco or London - Santa Rosa Sonoma County.

  • Can I find deals for flights from London to San Francisco Bay Area that include hotel bookings?

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

  • How can I find direct flights from London to San Francisco Bay Area?

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

  • Can I find deals for business class flights from London to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from London to San Francisco Bay Area 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 London, Ontario to San Francisco Bay Area?

    Currently, January is the cheapest month in which you can book a flight from London, Ontario to San Francisco Bay Area (average of C$ 276). Flying from London, Ontario to San Francisco Bay Area 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

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Top 3 airlines flying from London to San Francisco Bay Area

Discover the top 3 airlines that operate flights from London to San Francisco Bay Area. 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 30 June 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 275AverageC$ 448FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 345AverageC$ 625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 363AverageC$ 612FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to San Francisco Bay Area?

When you search for this flight from London to San Francisco Bay Area, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to San Francisco Bay Area?

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 Bay Area from London.

Can Cheapflights find flights from London to San Francisco Bay Area with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to San Francisco Bay Area flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to San Francisco Bay Area become cheaper?

Yes, Cheapflights offers price alerts on London to San Francisco Bay Area flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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