Cheap flights from Heathrow to San Francisco

Flight FAQs

From Heathrow to San Francisco

Are flight prices decreasing from Heathrow to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Heathrow and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from London Heathrow to San Francisco to control the spread of COVID-19?

New policies can now be found on Delta to help keep travellers safe while flying. Airline carriers are regularly disinfecting and sanitising their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from London Heathrow to San Francisco. Policies will vary by airline.

Which airlines flying from London Heathrow to San Francisco have flexible cancellations due to COVID-19?

Some of the carriers operating flights from London Heathrow to San Francisco that may be offering flexible cancellation policies are Virgin Atlantic, British Airways, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Heathrow to San Francisco for under £290 on Cheapflights?

Yes, there are multiple flights from Heathrow to San Francisco for under £290. The cheapest flight booked recently is on TAP AIR PORTUGAL for just £261, but on average you can expect to pay £275.

Are there direct flights from Heathrow to San Francisco for under £362 on Cheapflights?

Cheapflights has 20 direct flights from Heathrow to San Francisco under £362. A good price for a direct flight from Heathrow to San Francisco is less than £312.

Are there last-minute flights available from Heathrow to San Francisco for under £435?

There are currently 20+ open flights from Heathrow to San Francisco within the next 7 days for less than £435.

Does it rain more in Heathrow or San Francisco?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Heathrow is roughly greater than that of San Francisco. You can assume this to be the case over the next 20 days.

Is Heathrow weather warmer or cooler than San Francisco?

Expect the weather to be around 25 °C on average in September. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in San Francisco is generally hotter than in Heathrow.

How long does is the flight from Heathrow to San Francisco?

For as low as £286, Lufthansa can have you in San Francisco from Heathrow in 14h 25m. This flight may include one or multiple stops.

What are the cheapest airlines to flying from Heathrow to San Francisco return?

Flying on TAP AIR PORTUGAL is currently your cheapest option to San Francisco, with prices starting at £261. Additional return tickets that might be worth considering are offered by SWISS and Lufthansa, with the lowest prices starting at £282 and £285, respectively. TAP AIR PORTUGAL is 26% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Heathrow to San Francisco one-way?

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at £214. Lufthansa flights start at £216 while deals on SWISS start at £219 one-way.