What is the cheapest flight from San Francisco to London?

In the last 3 days, the lowest price for a flight from San Francisco to London was C$ 229 for a one-way ticket and C$ 594 for a round-trip. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from San Francisco to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from San Francisco to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to London. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from San Francisco to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to San Francisco with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

What are the most popular airlines flying to London?

The most popular airline among KAYAK users flying to London is Porter Airlines, followed by Air Canada and United Airlines.

C$ 229 CHEAP FLIGHTS from San Francisco to London (SFO - YXU)

SFO - YXU

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Cheapest round-trip

C$ 594

WestJet

Wed 29/4Mon 4/5

SFO - YXU • 1 stop

Cheapest one-way flights

C$ 229

WestJet

Thu 23/4

SFO - YXU • 1 stop

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to London!

Flight Deals

Cheap Flights from San Francisco to London (SFO-YXU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from San Francisco to London

Wed, 29 Apr - Mon, 4 May

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

SFO

YXU

8h 37m

1 stop

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

YXU

SFO

8h 54m

1 stop

C$ 594WestJet

Wed, 29 Apr - Mon, 4 May

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

SFO

YXU

8h 37m

1 stop

6:00 a.m. - 1:57 p.m.

YXU

SFO

10h 57m

2 stops

C$ 601WestJet

Thu, 30 Apr - Mon, 4 May

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

SFO

YXU

8h 37m

1 stop

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

YXU

SFO

8h 54m

1 stop

C$ 623WestJet

Wed, 29 Apr - Sun, 3 May

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

SFO

YXU

8h 37m

1 stop

8:00 p.m. - 1:57 p.m.

YXU

SFO

20h 57m

2 stops

C$ 627WestJet

Thu, 30 Apr - Mon, 4 May

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

SFO

YXU

8h 37m

1 stop

6:00 a.m. - 1:57 p.m.

YXU

SFO

10h 57m

2 stops

C$ 630WestJet

Fri, 1 May - Mon, 4 May

2:45 p.m. - 7:07 p.m.

SFO

YXU

25h 22m

2 stops

6:00 a.m. - 1:57 p.m.

YXU

SFO

10h 57m

2 stops

C$ 634WestJet

Wed, 29 Apr - Sat, 2 May

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

SFO

YXU

8h 37m

1 stop

8:00 p.m. - 9:24 p.m.

YXU

SFO

28h 24m

1 stop

C$ 635WestJet

Thu, 30 Apr - Sat, 2 May

7:25 a.m. - 9:18 p.m.

SFO

YXU

10h 53m

2 stops

6:00 a.m. - 10:50 a.m.

YXU

SFO

7h 50m

1 stop

C$ 653Air Canada

Wed, 29 Apr - Sat, 2 May

7:25 a.m. - 9:18 p.m.

SFO

YXU

10h 53m

2 stops

9:30 a.m. - 6:37 p.m.

YXU

SFO

12h 07m

2 stops

C$ 660Air Canada

Thu, 30 Apr - Sun, 3 May

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

SFO

YXU

8h 37m

1 stop

8:00 p.m. - 9:24 p.m.

YXU

SFO

28h 24m

1 stop

C$ 664WestJet

Booking Insights

Low season	March
High season	September
Cheapest flight	C$ 229

Best time to beat the crowds (63% less expensive on average)

Most popular time to fly (9% more expensive on average)

Flight from San Francisco to London

When to book flights from San Francisco to London

Are your dates flexible? Find out the best times to travel from San Francisco to London based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from San Francisco to London?
In the last 3 days, the lowest price for a flight from San Francisco to London was C$ 229 for a one-way ticket and C$ 594 for a round-trip.
Which aircraft models fly most regularly from San Francisco to London?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from San Francisco to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from San Francisco to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to San Francisco with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from San Francisco to London

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

San Francisco (SFO)

London (YXU)

SFO - YXU

C$ 202 Find Cheap Flights from San Francisco to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

Cheap Flights from San Francisco to London (SFO-YXU)

Recent round-trip flight deals from San Francisco to London

Recent one-way flight deals from San Francisco to London

Recent last minute flight deals from San Francisco to London

Good to know

When to book flights from San Francisco to London

FAQs for booking flights from San Francisco to London

What is the cheapest flight from San Francisco to London?

In the last 3 days, the lowest price for a flight from San Francisco to London was C$ 229 for a one-way ticket and C$ 594 for a round-trip.

Which aircraft models fly most regularly from San Francisco to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from San Francisco to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from San Francisco to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to San Francisco with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from San Francisco to London

Information on your arrival and departure airports

Cabin class types available on flights from San Francisco to London

Complete your trip to London with a hotel stay or car rental

Find direct flights to and from San Francisco and London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight