Find cheap flights from London to San Francisco

YXU - SFO

Find cheap flights from London to San Francisco

Search hundreds of travel sites at once for deals on flights to San Francisco

Round-trip
Economy
London (YXU)
San Francisco
Wed 4/14
Wed 4/21
Any month
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Good to know

Low season

SeptemberBest time to beat the crowds with an average 16% drop in price.

High season

DecemberMost popular time to fly with an average 27% increase in price.

Average price round-trip

$409(avg. price over the last 2 weeks)

Good deal round-trip

$372or less

Good deal one-way

$410or less

When to book flights from London to San Francisco

Estimated round-trip price
Average price per month

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $410 or less one-way and $372 or less round-trip.
  • High season is considered to be November, December and January. The cheapest month to fly is September.

FAQs for booking flights from London to San Francisco

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

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

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

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

COVID-19 information

Safety measures for airlines flying from London to San Francisco

Airlines flying from London to San Francisco have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from London to San Francisco

Mandatory masks

Masks required on board, masks provided on flights from London to San Francisco

Social distancing seating

Middle seats unavailable to book on flights from London to San Francisco

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from London to San Francisco

Book cheap flights from London to San Francisco

Round-trip flight deals

multi-stop
Multiple Airlines
2181 mi
YXU - SFO
multi-stop
Multiple Airlines
2181 mi
SFO - YXU
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One-way flight deals

multi-stop
Multiple Airlines
2181 mi
YXU - SFO
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