How long is the flight from London, Ontario to San Francisco?

Airlines like Air Canada fly from London, Ontario to San Francisco in about 9h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from London, Ontario to San Francisco is about 2180 mi.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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

When flying from London, Ontario to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on London, Ontario-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London, Ontario-San Francisco 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 London, Ontario-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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.

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

Yes. Cheapflights offers flight deals from London 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.

$193+ Cheap Flights from London, ON to San Francisco

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Cheap flight deals from London to San Francisco

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Thu 12/106:40 am -

1 stop12h 10m

Mon 12/144:40 pm -

1 stop9h 55m

Deal found 10/24

$437

Wed 11/253:25 pm -

1 stop9h 05m

Sun 11/298:25 am -

1 stop9h 02m

Deal found 10/25

$498

Thu 12/105:30 am -

1 stop8h 40m

Mon 12/146:53 pm -

2 stops10h 39m

Deal found 10/24

$521

Thu 11/59:05 pm -

1 stop17h 05m

Tue 11/108:25 am -

1 stop9h 02m

Deal found 10/22

$528

Thu 12/1010:00 am -

2 stops17h 50m

Mon 12/149:16 pm -

3 stops29h 19m

Deal found 10/24

$632

Fri 12/185:30 am -

1 stop8h 40m

Fri 1/14:40 pm -

1 stop12h 57m

Deal found 10/25

$651

Best flights from London to San Francisco
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Thu 1/149:15 am -

1 stop9h 25m

Wed 1/204:40 pm -

1 stop12h 57m

Deal found 10/23

$305

Mon 1/113:20 pm -

2 stops13h 25m

Wed 1/137:15 am -

2 stops11h 37m

Deal found 10/25

$564

Wed 1/135:30 am -

1 stop8h 35m

Sat 1/238:25 am -

2 stops10h 27m

Deal found 10/21

$334

Mon 1/119:15 am -

1 stop15h 15m

Wed 1/136:30 am -

2 stops12h 22m

Deal found 10/22

$445

Thu 12/103:20 pm -

2 stops10h 38m

Mon 12/146:53 pm -

2 stops10h 39m

Deal found 10/24

$536

Last-minute flights from London to San Francisco
Discover last-minute flight deals from London to San Francisco. Data last updated October 26, 2026 and is based on user searches.

Thu 11/59:05 pm -

1 stop17h 05m

Tue 11/108:25 am -

1 stop9h 02m

Deal found 10/22

$528

Thu 11/56:40 am -

2 stops28h 50m

Tue 11/1011:47 pm -

3 stops26h 48m

Deal found 10/22

$1,061

Fri 11/209:15 am -

1 stop9h 25m

Thu 11/268:25 am -

1 stop9h 02m

Deal found 10/25

$1,540

Wed 11/253:25 pm -

1 stop9h 05m

Sun 11/298:25 am -

1 stop9h 02m

Deal found 10/25

$498

Wed 11/256:40 am -

3 stops28h 09m

Sun 11/297:11 pm -

3 stops19h 34m

Deal found 10/25

$844

One-way flights from London to San Francisco
Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

Sat 12/53:20 pm -

1 stop9h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$193

Tue 12/155:30 am -

1 stop10h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/24

$241

Sat 12/510:00 am -

3 stops38h 46m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$242

Mon 11/93:25 pm -

1 stop9h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$273

Tue 12/85:30 am -

1 stop10h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/24

$307

Sun 11/89:05 pm -

1 stop17h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/23

$354

Wed 11/43:25 pm -

1 stop9h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/22

$394

Find flight deals from London to San Francisco

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$305 (Air Canada)
One-way from	$193 (Air Canada)
Popular in	August
Cheapest in	January
Average price	$648

Provider with most accurate pricing for London-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for London-San Francisco flights.

Search Deals

From London to San Francisco

Search Deals

One-way flight from London to San Francisco

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($40 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($40 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sat 12/5

3:20 pm-9:30 pm

1 stop9h 10m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$193

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Tue 12/15

5:30 am-1:10 pm

1 stop10h 40m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$241

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sat 12/5

10:00 am-9:46 pm

3 stops38h 46m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$242

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 1/14

9:15 am-3:40 pm

1 stop9h 25m

San Francisco

Wed 1/20

4:40 pm-8:37 am

1 stop12h 57m

$305

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Tue 12/8

5:30 am-1:10 pm

1 stop10h 40m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$307

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Wed 1/13

5:30 am-11:05 am

1 stop8h 35m

San Francisco

Sat 1/23

8:25 am-9:52 pm

2 stops10h 27m

$334

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sun 11/8

9:05 pm-11:10 am

1 stop17h 05m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$354

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Mon 11/9

9:05 pm-11:10 am

1 stop17h 05m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$354

Quickest round-trip

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Wed 11/4

3:25 pm-9:30 pm

1 stop9h 05m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$394

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Mon 11/2

8:30 pm-11:10 am

1 stop17h 40m

San Francisco

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$425

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 15 resultsSorted by cheapest first

Compare providers for flights from London to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Francisco in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London, Ontario-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London, Ontario-San Francisco 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 London, Ontario-San Francisco 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 London to San Francisco

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

YXU-SFO

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

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

Currently, January is the cheapest month in which you can book a flight from London, Ontario to San Francisco (average of $302). Flying from London, Ontario to San Francisco in August is currently the most expensive (average of $997). 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.

How much does it cost to fly round-trip from London, Ontario to San Francisco?

Airfare is below average for this route at the moment.

London, Ontario to San Francisco flights typically cost between $533 and $738 in January.
The cheapest round-trip price found within the last 5 days was $305 on Air Canada (Jan 14-Jan 20).

Related info for your journey

How long is the flight from London, Ontario to San Francisco?
Airlines like Air Canada fly from London, Ontario to San Francisco in about 9h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from London, Ontario to San Francisco is about 2180 mi.
Can I find deals for flights from London to San Francisco that include hotel bookings?
Yes. In addition to deals on London to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to San Francisco?
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.
Can I find deals for business class flights from London to San Francisco?
Yes. Cheapflights offers flight deals from London 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 London, Ontario to San Francisco?
Currently, January is the cheapest month in which you can book a flight from London, Ontario to San Francisco (average of $302). Flying from London, Ontario to San Francisco in August is currently the most expensive (average of $997). 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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$193+ Cheap flights from London, ON (YXU) to San Francisco (SFO)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from London to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from London to San Francisco

Cheapest flights from London to San FranciscoExplore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Best flights from London to San FranciscoDiscover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Last-minute flights from London to San FranciscoDiscover last-minute flight deals from London to San Francisco. Data last updated October 26, 2026 and is based on user searches.

Discover last-minute flight deals from London to San Francisco. Data last updated October 26, 2026 and is based on user searches.

One-way flights from London to San FranciscoSearch for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

Find flight deals from London to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to San Francisco that are best for you.

Compare providers for flights from London to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Francisco in October.

Best time to book a flight from London to San Francisco

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

Cheapflights Insights

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

How much does it cost to fly round-trip from London, Ontario to San Francisco?

Airfare is below average for this route at the moment.

London, Ontario to San Francisco flights typically cost between $533 and $738 in January.The cheapest round-trip price found within the last 5 days was $305 on Air Canada (Jan 14-Jan 20).

Related info for your journey

How long is the flight from London, Ontario to San Francisco?

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

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

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

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

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Alternative routes for London to San Francisco

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Complete your trip

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Search flights from London to San Francisco by cabin class

Find flights from London to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and San Francisco flights

Browse other London and San Francisco flight options. Last updated on October 26, 2026.

Other flights from London

Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.

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Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Best flights from London to San Francisco
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Last-minute flights from London to San Francisco
Discover last-minute flight deals from London to San Francisco. Data last updated October 26, 2026 and is based on user searches.

One-way flights from London to San Francisco
Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

London, Ontario to San Francisco flights typically cost between $533 and $738 in January.
The cheapest round-trip price found within the last 5 days was $305 on Air Canada (Jan 14-Jan 20).