What is the cheapest airline that flies from London to San Francisco?

Air Canada, United Airlines, and WestJet are the most popular carriers operating from London to San Francisco

Which airport is the most popular layover for flights between London, Ontario and San Francisco?

Toronto (YYZ) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from London, Ontario to San Francisco?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 343.

Which layover airport has the shortest connection time from London, Ontario to San Francisco?

Calgary (YYC) has the shortest average layover time for this route: 1h 52m.

Which airlines fly to San Francisco?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to San Francisco from London, Ontario according to our data. Air Canada is the first choice among our users, with 45% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 8 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from London, Ontario to San Francisco?

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 38m.

When did momondo last update prices for flights from London Airport to San Francisco Airport?

Prices for flights from London Airport to San Francisco Airport were last updated today.

How many operators does momondo search for flights from London Airport to San Francisco Airport?

The number of operators available for flights from London Airport to San Francisco Airport is 3 as of September 2025.

How old do you have to be to fly from London Airport to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 239 Cheap Flights from London to San Francisco in 2025/26

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Find the cheapest flights from London, Ontario to San Francisco

Round-trip

One-way

Cheap round-trip flights

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

8h 13m1 stop

2:30 p.m. - 8:46 a.m.SFO-YXU

15h 16m1 stop

C$ 523Air Canada

Find Deal

Tue, 21 Oct - Mon, 27 Oct

5:45 a.m. - 2:56 p.m.YXU-SFO

12h 11m2 stops

8:49 a.m. - 9:21 p.m.SFO-YXU

9h 32m1 stop

C$ 528Air Canada

Find Deal

Thu, 5 Feb - Mon, 9 Feb

9:25 a.m. - 9:22 p.m.YXU-SFO

14h 57m2 stops

7:10 p.m. - 5:05 p.m.SFO-YXU

18h 55m2 stops

C$ 537United Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

6:15 a.m. - 1:35 p.m.YXU-SFO

10h 20m2 stops

8:50 a.m. - 9:21 p.m.SFO-YXU

9h 31m1 stop

C$ 554Air Canada

Find Deal

Tue, 21 Oct - Mon, 27 Oct

5:45 a.m. - 10:54 a.m.YXU-SFO

8h 09m1 stop

8:30 a.m. - 9:21 p.m.SFO-YXU

9h 51m1 stop

C$ 578United Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

5:45 a.m. - 12:12 a.m.YXU-SFO

21h 27m2 stops

8:30 a.m. - 9:21 p.m.SFO-YXU

9h 51m1 stop

C$ 586United Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

3:40 p.m. - 9:32 p.m.YXU-SFO

8h 52m1 stop

5:00 a.m. - 9:17 a.m.SFO-YXU

25h 17m2 stops

C$ 623United Airlines

Find Deal

Sat, 4 Oct - Wed, 8 Oct

6:15 a.m. - 2:40 p.m.YXU-SFO

11h 25m2 stops

11:35 a.m. - 9:17 a.m.SFO-YXU

18h 42m2 stops

C$ 630Multiple Airlines

Find Deal

Sat, 4 Oct - Wed, 8 Oct

5:45 a.m. - 9:05 p.m.YXU-SFO

18h 20m2 stops

5:00 a.m. - 9:21 p.m.SFO-YXU

13h 21m2 stops

C$ 666United Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

6:15 a.m. - 1:35 p.m.YXU-SFO

10h 20m2 stops

6:53 p.m. - 8:46 a.m.SFO-YXU

10h 53m2 stops

C$ 689Air Canada

Find Deal

Tue, 21 Oct - Mon, 27 Oct

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets

Air Canada

21 Oct

YXU3:40 p.m.London

8h 13m

1 stop

SFO8:53 p.m.San Francisco

27 Oct

SFO2:30 p.m.San Francisco

15h 16m

1 stop

YXU8:46 a.m.London

C$ 523

Find similar

Air Canada

5 Feb

YXU5:45 a.m.London

12h 11m

2 stops

SFO2:56 p.m.San Francisco

9 Feb

SFO8:49 a.m.San Francisco

9h 32m

1 stop

YXU9:21 p.m.London

C$ 528

Find similar

Air Canada

21 Oct

YXU6:15 a.m.London

10h 20m

2 stops

SFO1:35 p.m.San Francisco

27 Oct

SFO8:50 a.m.San Francisco

9h 31m

1 stop

YXU9:21 p.m.London

C$ 554

Find similar

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets

United Airlines

31 Oct

YXU9:25 a.m.London

14h 57m

2 stops

SFO9:22 p.m.San Francisco

7 Nov

SFO7:10 p.m.San Francisco

18h 55m

2 stops

YXU5:05 p.m.London

C$ 536

Find similar

United Airlines

30 Oct

YXU5:45 a.m.London

8h 09m

1 stop

SFO10:54 a.m.San Francisco

6 Nov

SFO8:30 a.m.San Francisco

9h 51m

1 stop

YXU9:21 p.m.London

C$ 578

Find similar

United Airlines

30 Oct

YXU5:45 a.m.London

21h 27m

2 stops

SFO12:12 a.m.San Francisco

6 Nov

SFO8:30 a.m.San Francisco

9h 51m

1 stop

YXU9:21 p.m.London

C$ 586

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/10

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

1 stop8h 13m

San Francisco

Mon 27/10

2:30 p.m.-8:46 a.m.

1 stop15h 16m

C$ 523

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 5/2

5:45 a.m.-2:56 p.m.

2 stops12h 11m

San Francisco

Mon 9/2

8:49 a.m.-9:21 p.m.

1 stop9h 32m

C$ 528

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 31/10

9:25 a.m.-9:22 p.m.

2 stops14h 57m

San Francisco

Fri 7/11

7:10 p.m.-5:05 p.m.

2 stops18h 55m

C$ 536

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/10

6:15 a.m.-1:35 p.m.

2 stops10h 20m

San Francisco

Mon 27/10

8:50 a.m.-9:21 p.m.

1 stop9h 31m

C$ 554

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

5:45 a.m.-10:54 a.m.

1 stop8h 09m

San Francisco

Thu 6/11

8:30 a.m.-9:21 p.m.

1 stop9h 51m

C$ 578

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

5:45 a.m.-12:12 a.m.

2 stops21h 27m

San Francisco

Thu 6/11

8:30 a.m.-9:21 p.m.

1 stop9h 51m

C$ 586

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 4/10

3:40 p.m.-9:32 p.m.

1 stop8h 52m

San Francisco

Wed 8/10

5:00 a.m.-9:17 a.m.

2 stops25h 17m

C$ 623

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 4/10

6:15 a.m.-2:40 p.m.

2 stops11h 25m

San Francisco

Wed 8/10

11:35 a.m.-9:17 a.m.

2 stops18h 42m

C$ 630

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

5:45 a.m.-9:05 p.m.

2 stops18h 20m

San Francisco

Thu 6/11

5:00 a.m.-9:21 p.m.

2 stops13h 21m

C$ 666

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/10

6:15 a.m.-1:35 p.m.

2 stops10h 20m

San Francisco

Mon 27/10

6:53 p.m.-8:46 a.m.

2 stops10h 53m

C$ 689

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London, Ontario to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from London, Ontario is in August. Flight prices, which tend to average around C$ 254, are often lower during this time because this is during the off-season. The month of May is another great option to travel to San Francisco, with average flight prices from London, Ontario averaging around C$ 367.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from London, Ontario to San Francisco is on a Saturday. Travellers who choose to depart for San Francisco on a Saturday will often find tickets for as low as C$ 498. On the other hand, Tuesday is the most expensive day to depart from London, Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 662.

What is the cheapest time of day to depart on your flight to San Francisco?

Flying to San Francisco from London, Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 506 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 626.

Can stopping save me money on London, Ontario to San Francisco flights?

You could potentially save up to 55% on your flight if you consider stops on a London, Ontario to San Francisco flight.

When to book flights from London, Ontario to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap London, Ontario to San Francisco (YXU to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to San Francisco

Direct flights	None

There are no direct flights from London, Ontario to San Francisco. There are no popular flight routes from London, Ontario to San Francisco.

Search flight deals

How far is London to San Francisco by plane?
San Francisco is 3497.0 km away from London. In terms of flight time, this usually takes a little over 8h 09m.
When did momondo last update prices for flights from London Airport to San Francisco Airport?
Prices for flights from London Airport to San Francisco Airport were last updated today.
How many operators does momondo search for flights from London Airport to San Francisco Airport?
The number of operators available for flights from London Airport to San Francisco Airport is 3 as of September 2025.
How old do you have to be to fly from London Airport to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London, Ontario to San Francisco?
momondo data reveals that the most frequently booked airline on the route from London, Ontario to San Francisco is Air Canada, representing 42% of all bookings. The subsequent popular airlines are WestJet at 40% and United Airlines at 18%.

Best airlines flying from London, Ontario to San Francisco

Compare and see reviews for airlines that fly from London, Ontario to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 241	Free Cancellation	Rating 7.2 3,095 reviews	Search WestJet flights
Air Canada	PriceFrom C$ 304	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 347	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Fremont

Carmel-by-the-Sea

Turlock

South San Francisco

Mountain View

Half Moon Bay

Sunnyvale

Cupertino

Mill Valley

Los Banos

Palo Alto

Pacifica

Roseville

Woodland

Why use momondo?

Why should I use momondo to find a flight deal from London to San Francisco?

It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

Can I find flights from London to San Francisco with flexible booking policies on momondo?

Yes. All flights to San Francisco from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to San Francisco?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from London.

I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?

Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

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Cheap flights from London, Ontario to San Francisco from C$ 239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to San Francisco departing on 27/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

Cheap one-way flights

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets

momondo Fare Finder

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

See travel insights to San Francisco from

How to get the cheapest flight ticket from London, Ontario to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

What is the cheapest time of day to depart on your flight to San Francisco?

Can stopping save me money on London, Ontario to San Francisco flights?

You could potentially save up to 55% on your flight if you consider stops on a London, Ontario to San Francisco flight.

What is the cheapest airline that flies from London to San Francisco?

Air Canada, United Airlines, and WestJet are the most popular carriers operating from London to San Francisco

Which airlines fly to San Francisco?

Which airport is the most popular layover for flights between London, Ontario and San Francisco?

Toronto (YYZ) was the most common stop: 67% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from London, Ontario to San Francisco?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 343.

Which layover airport has the shortest travel time from London, Ontario to San Francisco?

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 38m.

Which layover airport has the shortest connection time from London, Ontario to San Francisco?

Calgary (YYC) has the shortest average layover time for this route: 1h 52m.

When to book flights from London, Ontario to San Francisco

Cheap London, Ontario to San Francisco (YXU to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to San Francisco

Direct flights

How far is London to San Francisco by plane?

When did momondo last update prices for flights from London Airport to San Francisco Airport?

How many operators does momondo search for flights from London Airport to San Francisco Airport?

How old do you have to be to fly from London Airport to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular airline from London, Ontario to San Francisco?

Best airlines flying from London, Ontario to San Francisco

Compare and see reviews for airlines that fly from London, Ontario to San Francisco with momondo

Travelling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from London to San Francisco?

Can I find flights from London to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from London to San Francisco?

I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California