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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from California 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 California 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 California 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 California 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 California 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>

C$ 309 CHEAP FLIGHTS from California to London

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

...and more

Travellers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

C$ 611

Air Canada

Tue 20/1Thu 22/1

SFO - YXU • 2 stops

Cheapest one-way flights

C$ 309

Multiple Airlines

Wed 17/12

SFO - YXU • 2 stops

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 California to London

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from California 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

Recent round-trip flight deals from California to London

Tue, 20 Jan - Thu, 22 Jan

6:00 p.m. - 8:46 a.m.SFO-YXU

11h 46m2 stops

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

8h 44m1 stop

C$ 611Air Canada

Find Deal

Tue, 20 Jan - Thu, 22 Jan

7:30 a.m. - 9:21 p.m.SFO-YXU

10h 51m2 stops

5:10 a.m. - 3:35 p.m.YXU-SFO

13h 25m2 stops

C$ 618Air Canada

Find Deal

Tue, 20 Jan - Thu, 22 Jan

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

15h 16m1 stop

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

8h 44m1 stop

C$ 636Air Canada

Find Deal

Mon, 19 Jan - Thu, 22 Jan

12:43 a.m. - 5:05 p.m.SFO-YXU

13h 22m2 stops

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

8h 44m1 stop

C$ 723United Airlines

Find Deal

Wed, 4 Mar - Wed, 18 Mar

10:16 a.m. - 6:35 a.m.SJC-YXU

17h 19m2 stops

8:10 p.m. - 7:05 p.m.YXU-SJC

25h 55m2 stops

C$ 743Multiple Airlines

Find Deal

Mon, 19 Jan - Thu, 22 Jan

12:43 a.m. - 5:05 p.m.SFO-YXU

13h 22m2 stops

5:10 a.m. - 2:07 p.m.YXU-SFO

11h 57m2 stops

C$ 744United Airlines

Find Deal

Wed, 4 Mar - Wed, 18 Mar

10:16 a.m. - 6:35 a.m.SJC-YXU

17h 19m2 stops

8:10 p.m. - 10:04 p.m.YXU-SJC

28h 54m2 stops

C$ 774Multiple Airlines

Find Deal

Wed, 14 Jan - Sat, 17 Jan

6:05 p.m. - 8:46 a.m.SAN-YXU

11h 41m2 stops

5:10 a.m. - 11:53 a.m.YXU-SAN

9h 43m1 stop

C$ 823Air Canada

Find Deal

Wed, 7 Jan - Wed, 14 Jan

9:15 a.m. - 6:34 a.m.SJC-YXU

18h 19m3 stops

8:10 p.m. - 2:52 p.m.YXU-SJC

21h 42m2 stops

C$ 859WestJet

Find Deal

Wed, 7 Jan - Wed, 14 Jan

9:15 a.m. - 6:34 a.m.SJC-YXU

18h 19m3 stops

8:10 p.m. - 2:52 p.m.YXU-SJC

21h 42m3 stops

C$ 871WestJet

Find Deal

Useful Info

Cheapest flight	C$ 309

Flight from San Francisco to London

How does KAYAK find such low prices on flights from California 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 California to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from California 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 California 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 California with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California 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 California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Grand Bend

Port Stanley

Everything you need to know for your flight to London

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in London

London (YXU)

C$ 309 Find Cheap Flights from California to London

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

Everything you should know

Cheap Flights from California to London

Recent round-trip flight deals from California to London

Recent one-way flight deals from California to London

Good to know

FAQs for booking flights from California to London

How does KAYAK find such low prices on flights from California 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 California to London.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from California 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 California 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 California with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California 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 California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near London?

Everything you need to know for your flight to London

Information on the airport you'll fly into in London

Cabin class types available on flights to California

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

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