Cheap Flights from London Heathrow to San Francisco International

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Compare London Heathrow to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

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Flight deals from London Heathrow to San Francisco International

Looking for a cheap last-minute deal or the best return flight from London Heathrow to San Francisco International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London Heathrow to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to San Francisco International flights are currently cheapest in May.

Direct flights from London Heathrow to San Francisco International

London Heathrow to San Francisco International: Alternative routes

Compare routes from London Heathrow to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

London to San Francisco: Flight information

The things to know before you go.
Cheapest flight foundRs91,179
Cheapest month to flyMay
Average flight time11 hrs, 3 mins
Most popular airlineAir New Zealand
Average flights per week290

Finding cheap flights from London Heathrow to San Francisco International: Frequently asked questions

The best price we found for a return flight from London Heathrow to San Francisco International is Rs104,292. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
11 hours and 3 minutes is the average flight time from London Heathrow to San Francisco International.
Air New Zealand, KLM and United fly direct from London Heathrow to San Francisco International.
As of April 2025, there are 290 flights per week flying from London Heathrow to San Francisco International.
The cheapest month to fly from London Heathrow to San Francisco International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to San Francisco International Airport on Wednesday, 11 June 2025.
Yes – the average flight time is 11 hours and 3 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, SWISS and British Airways offer the cheapest flight tickets to San Francisco International.

Flying from London Heathrow Airport (LHR) to San Francisco International Airport (SFO): what you need to know

  • Take a direct flight from London Heathrow Airport to San Francisco International Airport and you'll be in the air for an average of 11 hours 5 minutes.

  • San Francisco is seven hours behind London and follows the UTC-7 timezone.

  • Take your pick of 62 weekly London Heathrow Airport to San Francisco International Airport flights. The 10:05 departure with United Airlines is the earliest flight available. Virgin Atlantic operates the latest service of the day at 17:20.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to board your LHR to SFO flight.

  • Flying during a peak time such as July? Major public holidays and other popular periods can mean longer queues at airport checkpoints. Be extra cautious and arrive up to four hours before an international flight and two hours before a domestic departure.

  • With direct flights from London Heathrow Airport to San Francisco International Airport available through a range of airlines, flying to San Francisco (and then other destinations in United States) is a cinch. Here's who you can fly nonstop with:

  • The airline that passengers book most often on this route is British Airways.

  • Among carriers operating LHR to SFO flights, United Airlines has the highest percentage of on-time landings.

  • Think about adding a stopover when booking your ticket from London Heathrow Airport to San Francisco International Airport. Simply uncheck 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here's where you can stop between LHR and SFO:

    • Hong Kong International Airport

    • Portland International Airport

    • Seattle-Tacoma International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to San Francisco International Airport (SFO)

  • Right now, Rs91,179 is the cheapest price we've found for a one-way London Heathrow Airport to San Francisco International Airport flight. The best price for a return plane ticket is Rs104,292. Remember that fares may change due to availability at the time of booking.

  • To get cheap tickets from LHR to SFO, reserve your journey 11 months ahead of your departure date.

  • October is the cheapest month for flights from London Heathrow Airport to San Francisco International Airport. If you need to travel during a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • Cut down on the time spent looking for cheap flights from LHR to SFO by creating a Price Alert. We'll send you an email or push notification on the app when a lower fare becomes available.

  • Select your preferred departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from London Heathrow Airport to San Francisco International Airport.

Handy information about London Heathrow Airport (LHR)

  • 68.18% of flights departing from London Heathrow Airport make it to their destination on schedule.

  • London Heathrow Airport is around 31 kilometres from central London. If you're driving, ride-sharing or catching a cab from the centre, it'll take 55 minutes or so to get there, depending on the traffic.

  • The journey when using public transport takes roughly 1 hour.

  • Get your break off to a hassle-free start by staying near LHR. Whether you've booked an early flight from London Heathrow Airport to San Francisco International Airport or just don't like being rushed, these stays are the answer:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • San Francisco International Airport to the centre of San Francisco has a drive time of around 20 minutes. It's approximately 21 kilometres away.

  • When travelling on public transport, expect a journey of roughly 45 minutes.

When to fly to San Francisco International Airport (SFO)

  • August is the busiest month for flights from London Heathrow Airport to San Francisco International Airport. To avoid the crowds, visit San Francisco in February.

  • When reserving your flight from London Heathrow Airport to San Francisco International Airport, consider the type of weather you enjoy. September is the warmest month in San Francisco, with temperatures ranging from 12ºC to 22ºC.

  • If you want cooler conditions, look for a cheap ticket from LHR to SFO in January. Average temperatures are between 6ºC and 16ºC then.

Explore more of United States

  • San Jose is just one of the many cities in United States waiting to be discovered once you've seen the sights of San Francisco. Around 64 kilometres away to the south-east, its top attractions include Winchester Mystery House, Rosicrucian Egyptian Museum and San Jose Museum of Art.

  • If you're looking to explore another major stop in United States, consider Fresno, roughly 257 kilometres south-east of San Francisco. Forestiere Underground Gardens, Fresno Chaffee Zoo and Shinzen Japanese Garden are key reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.