Find Cheap Flights from London Heathrow to San Francisco (LHR - SFO)

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London Heathrow to San Francisco Flight Information

Avg. Flight Duration 10h 51m
Flights Arrive in San Francisco
Flights Depart from London Heathrow
Flight Price $318
Distance 5,354 miles
Airlines SWISS, British Airways, Lufthansa, Austrian Airlines, Brussels Airlines, Virgin Atlantic, KLM, United Airlines

Good to Know

Low Season:
November
Best time to beat the crowds
5%
expected price decrease
High Season:
July
Most popular time to fly
30%
expected price increase
Average Price:
$410
(avg. price over the last 2 weeks)
Good Deal:
$370
or less (round trip)

When to Book Flights from London Heathrow to San Francisco

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $369 or less.
The cheapest flight from London Heathrow to San Francisco was found 79 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is November.
Morning departure is around 8% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to San Francisco Flights

How long does a flight from London Heathrow to San Francisco take?
An average nonstop flight takes 11h 10m, covering a distance of 5354 miles.
How many flights are there between London Heathrow and San Francisco?
There are 418 (nonstop) flights between London Heathrow and San Francisco per week, averaging 60 per day.
Which airlines provide the cheapest flights from London Heathrow to San Francisco?
In the past 3 days, the cheapest round-trip tickets were found on SWISS ($318), British Airways ($326) and Lufthansa ($338).
Do I need a passport to fly between London Heathrow and San Francisco?
Yes.
Which airlines fly most frequently between London Heathrow and San Francisco?
Air New Zealand (8 times daily), Delta (6 times daily), Virgin Atlantic (6 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly London Heathrow to San Francisco?
For London Heathrow to San Francisco, Wednesday is the cheapest day to fly on average and Friday is the most expensive. Flying from San Francisco back to London Heathrow, the best deals are generally found on Monday, with Wednesday being the most expensive.

Find the Flight That Suits You Best

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Cheapest

Airline
Departure & Arrival Time
Stops
Duration
SWISS SWISS
LHR-SFO
12:00a - 12:00a
1 stop
18h 15m
LHR-SFO
$318
SWISS SWISS
SFO - LHR
12:00a - 12:00a
1 stop
15h 30m
SFO - LHR
View Deal

Best

Airline
Departure & Arrival Time
Stops
Duration
Virgin Atlantic Virgin Atlantic
LHR-SFO
12:00a - 12:00a
1 stop
16h 44m
LHR-SFO
$384
StudentUniverse
Virgin Atlantic Virgin Atlantic
SFO - LHR
12:00a - 12:00a +1
1 stop
25h 15m
SFO - LHR
View Deal

Quickest

Airline
Departure & Arrival Time
Stops
Duration
Brussels Airlines Brussels Airlines
LHR-SFO
12:00a - 12:00a
nonstop
11h 10m
LHR-SFO
$421
Brussels Airlines Brussels Airlines
SFO - LHR
12:00a - 12:00a
nonstop
10h 30m
SFO - LHR
View Deal

Earliest

Airline
Departure & Arrival Time
Stops
Duration
Brussels Airlines Brussels Airlines
LHR-SFO
12:00a - 12:00a
nonstop
11h 10m
LHR-SFO
$421
Brussels Airlines Brussels Airlines
SFO - LHR
12:00a - 12:00a
nonstop
10h 30m
SFO - LHR
View Deal
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.