Cheap Flights from London (LHR) to San Francisco (SFO)

Prices were available within the past 7 days and starts at £198 for one-way flights and £338 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from London to San Francisco: Reviews from verified customers

Feb 16, 2020

A great experience with my family on our first United Flight for several years!

Feb 14, 2020

Good staff, food was the right amount for the long flight!

Jan 27, 2020

Economy was reasonably comfortable and made the 11hr trip a bit more bearable.

Jan 14, 2020

The whole experience was totally spoilt by huge (4hour plus) queues to pass through passport control. After requesting our luggage to be routed through to Auckland, which was confirmed with label attached to the cases; we were appalled to find our cases unattended, with those of other passengers, in the baggage hall after they have been offloaded from the carousel. It then took us over an hour to find an Air New Zealand desk to have the cases booked on to our flight to Auckland. There were hundreds of passengers, some elderly, some with children, who were obviously affected by the experience. Shame on San Francisco Airport and the Authorities, not the best way to welcome visitors, even those in transit, to their country.

Dec 26, 2019

We really enjoyed flying with Virgin Atlantic

Dec 24, 2019

3 hours to get through San Francisco immigration was not great !!!

Dec 20, 2019

On time and efficient

Dec 3, 2019

Really great staff on-board.

Nov 26, 2019

Smooth flight

Nov 26, 2019

Delays meant we had too little time for our transfer and our bags were not loaded, so we ended up in San Francisco without any luggage. Not great

Flight from London to San Francisco route information

Origin Airport Heathrow
Destination Airport San Francisco Intl.
Airlines Serving Aer Lingus, Aeromexico, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, SAS, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Flight Price £338
Distance 8,567 km

Cheap London to San Francisco (LHR-SFO) flights: frequently asked questions

Compare flights from London to San Francisco easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to San Francisco. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Francisco Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to San Francisco Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow ( LHR) to San Francisco Intl. (SFO) 

The easiest way to view the best deals on flights from London to San Francisco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to San Francisco Intl. start at just £338 and range up to £399.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and San Francisco
  • booking your flight during January , the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why book your London to San Francisco flights with Expedia?  

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to San Francisco Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.