£243 Find Cheap Flights from California to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 31/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from California to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from California to Heathrow 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.

Recent return flight deals from California to Heathrow

Thu, 29 Oct - Mon, 9 Nov
Scandinavian Airlines Logo
17:40 - 18:30
SFO
-
LHR
17h 50m
1 stop
Scandinavian Airlines Logo
06:40 - 14:35
LHR
-
SFO
15h 55m
1 stop
£564Scandinavian Airlines
Thu, 24 Sep - Mon, 28 Sep
Scandinavian Airlines Logo
16:45 - 16:00
SFO
-
LHR
15h 15m
1 stop
Scandinavian Airlines Logo
19:50 - 14:40
LHR
-
SFO
26h 50m
2 stops
£564Scandinavian Airlines
Tue, 8 Sep - Mon, 14 Sep
TAP AIR PORTUGAL Logo
16:45 - 22:55
LAX
-
LHR
22h 10m
1 stop
TAP AIR PORTUGAL Logo
13:45 - 14:45
LHR
-
LAX
33h 00m
1 stop
£577TAP AIR PORTUGAL
Sat, 31 Oct - Tue, 8 Dec
TAP AIR PORTUGAL Logo
18:15 - 17:30
LAX
-
LHR
16h 15m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:15
LHR
-
LAX
17h 15m
1 stop
£580TAP AIR PORTUGAL
Thu, 1 Oct - Tue, 24 Nov
Virgin Atlantic Logo
13:15 - 13:05
SJC
-
LHR
15h 50m
1 stop
Virgin Atlantic Logo
10:45 - 18:52
LHR
-
SJC
16h 07m
1 stop
£595Virgin Atlantic
Thu, 1 Oct - Tue, 24 Nov
Virgin Atlantic Logo
14:35 - 14:00
SJC
-
LHR
15h 25m
1 stop
Virgin Atlantic Logo
11:20 - 18:48
LHR
-
SJC
15h 28m
1 stop
£599Virgin Atlantic
Wed, 9 Sep - Wed, 16 Sep
SWISS Logo
13:50 - 17:50
BUR
-
LHR
20h 00m
2 stops
SWISS Logo
08:40 - 21:58
LHR
-
BUR
21h 18m
2 stops
£632SWISS
Wed, 2 Sep - Wed, 16 Sep
SWISS Logo
19:20 - 17:50
LAS
-
LHR
14h 30m
1 stop
SWISS Logo
08:40 - 15:50
LHR
-
LAS
15h 10m
1 stop
£636SWISS
Sun, 9 Aug - Thu, 27 Aug
Delta Logo
16:57 - 10:00
OAK
-
LHR
33h 03m
1 stop
Delta Logo
06:30 - 23:51
LHR
-
OAK
25h 21m
2 stops
£640Delta
Sun, 9 Aug - Thu, 27 Aug
Delta Logo
06:00 - 13:05
OAK
-
LHR
23h 05m
2 stops
Delta Logo
11:45 - 16:14
LHR
-
OAK
36h 29m
2 stops
£643Delta
Useful Info

Good to know - Cheap tickets from California to London Heathrow Airport

Low seasonJanuary
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (4% more expensive on average)

Flights from California to Heathrow: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from California to Heathrow 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with British Airways
SFO
-
LHR
Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia
SFO
-
LHR
Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic
SFO
-
LHR
Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines
SFO
-
LHR
Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
ValerieFlew with British Airways
LAX
-
LHR
Apr 2025
It was difficult to tell if the checked luggage was included. London Heathrow is huge and if the second flight hasn't been delayed I would have missed it.
PallaviFlew with British Airways
SFO
-
LHR
Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
Verified travelerFlew with Iberia
LAX
-
LHR
Jan 2025
Make sure you arrive early. Sometimes, the traffic getting to LAX can be a total nightmare.
WeiFlew with British Airways
LAX
-
LHR
Sept 2024
Connection takes long, Make sure you plan enough time.
TapanFlew with British Airways
SFO
-
LHR
Oct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.
Verified travelerFlew with British Airways
LAX
-
LHR
Mar 2024
Pack your own food if you have dietary restrictions and fly other airlines if possible
MichelleFlew with British Airways
LAX
-
LHR
May 2024
Make sure you separate your luggage tags from your tickets
ShaunaFlew with British Airways
LAX
-
LHR
Dec 2023
I would suggest calling the airline to make sure that their TV screens work on the back of the seats, and if they don’t work that the entertainment option would work on your cell phones.

FAQs for booking California to London Heathrow Airport flights

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

    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 Heathrow Airport.

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

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

  • What is the Hacker Fare option on flights from California to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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 Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Northampton
Swindon
Slough
Winchester
Stansted
Croydon
Folkestone
Poole
Chichester
Maidstone
Colchester
Salisbury
Chelmsford
Crawley

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

London Heathrow Airport (LHR)