£383 Find Cheap Flights from London Heathrow Airport to San Francisco – Compare and Save

These are the earliest and latest flight times available from London Heathrow Airport to San Francisco:

• Earliest: departs at 10:05 and lands at 21:17
• Latest: departs at 15:20 and lands at 02:32.

The flight takes about 11h 12m.

Four cabin classes are available on flights from London Heathrow Airport to San Francisco:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A direct flight from London Heathrow Airport to San Francisco takes 11h 12m, covering 5,350 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from London Heathrow Airport to San Francisco range from £472 to £682, with an average of £565 over the past 12 months. Anything below £472 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 14% above the £565 route average. Book 19 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £474 return via Minneapolis St Paul (MSP), compared with £571 for direct.

United Airlines is slightly above the route average for timely arrivals, while Virgin Atlantic has a lower on-time arrival rate. On-time arrival rates on London Heathrow Airport to San Francisco flights are:

• United Airlines: 89% on time
• Virgin Atlantic: 87% on time
• British Airways: 85% on time

On average, flights on this route are punctual 87% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £38–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 787-9 Dreamliner family is used most often on this route, operated mainly by Lufthansa and Brussels Airlines. Other aircraft seen on the route include Airbus A380-800 variants.

Morning is the busiest departure period on London Heathrow Airport to San Francisco flights, with 60% leaving in that window. Afternoon departures account for 40%, Evening flights for 0%, and Night flights for 0%.

KLM is the only airline on the London Heathrow Airport to San Francisco route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from London Heathrow Airport to San Francisco are currently lower than usual. Average one-way flight prices are about £410, which is 19% below the typical average for this route.

San Francisco Airport (SFO) hosts 5 major car hire companies, with daily rates starting from around £11 for economy cars. Top options include:

• Europcar
• Thrifty
• Dollar
• Hertz
• Fox

Flights from London Heathrow Airport to San Francisco usually depart from London Heathrow (LHR) and arrive at San Francisco (SFO).

Morning flights have the fewest delays on this route, while evening departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the London Heathrow Airport to San Francisco route, 13% of flights were delayed in the past three months, with delays averaging 2h 21m.

One-stop flights from London Heathrow Airport to San Francisco most commonly connect through:

• Dublin (DUB) – 31% of one-stop connections
• Seattle/Tacoma Intl (SEA) – 18% of one-stop connections
• Lisbon Humberto Delgado (LIS) – 13% of one-stop connections
• Kastrup Copenhagen (CPH) – 12% of one-stop connections

Yes. Flexible dates can save you up to 10% on flights from London Heathrow Airport to San Francisco. Thursday is the cheapest departure day at £537 return on average, while Sunday is the most expensive at £595, a difference of £58.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

3 airlines operate flights between London Heathrow Airport and San Francisco. The airlines offering direct flights on this route include:

• United Airlines
• British Airways
• Virgin Atlantic

Flying via Frankfurt am Main (FRA) gives the shortest average 1-stop total travel time of 14h 06m, compared to 14h 12m via Dublin (DUB) and 14h 22m via Amsterdam Schiphol (AMS).

San Francisco is 7 hours behind London Heathrow Airport (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Francisco are Union Square, Fisherman's Wharf, and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

Among airlines operating London Heathrow Airport to San Francisco flights:

• Lufthansa: offers extra legroom
• Virgin Atlantic: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Brussels Airlines: offers free seat selection
• KLM: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Lufthansa: a cabin bag and a checked bag in Economy class
• British Airways: a cabin bag and a checked bag in Economy class
• Virgin Atlantic: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Heathrow Airport has at least one children’s play area in every terminal and most restaurants do children’s menus, and some promise to serve food within 15min. You can pre-order nappies and baby milk via the on-site chemist in each terminal, which reduces the need to carry more things through security.

There are three airports in the San Francisco Bay area: San Francisco International Airport (SFO), Oakland International Airport (OAK) and San Jose International Airport (SJC). SFO is the airport that has more international airline options while Oakland and San Jose have more low-cost carriers and domestic routes. Both British Airways and Virgin fly non-stop to San Francisco SFO Airport from London Heathrow.

There are two trains from central London, leaving Paddington station; the Heathrow Express takes 15min, non-stop and the Heathrow Connect takes 30min with a few stops. It is also very straightforward to catch the London Underground - the journey takes about an hour from central London.

The Bay Area Rapid Transit (BART) is easy, taking 30min, with trains leaving 3-4 times every hour. Passengers can connect to the BART from any of the terminals via the free Air Train. BART trains run from 5:00 in the week, 6:00 on Saturdays, and 8:00 on Sundays and stop at midnight every day. There are also buses that run from San Francisco SFO Airport to various parts of the state. For example, the Evans Airport shuttle serves Napa, the Marin Airporter goes into Marin County and the Sonoma County Airport Express carries passengers to Sonoma County.

Single-stopover flights are some of the top choices for flights between these destinations. Aer Lingus offers one of the best flights, with a single stopover at Dublin Airport (DUB) en route. Iberia has flights with one stopover at Dallas/Fort Worth, while KLM has single-stopover flights going via Amsterdam Schiphol (AMS).

KLM is a popular provider of these flights and offers various routes. The most popular route is a direct flight between these airports. There are also numerous single-stopover flights with stops at airports like Paris Charles de Gaulle (CDG), Los Angeles (LAX), and Seattle/Tacoma International (SEA).

Standard tickets for flights with Iberia allow for one carry-on bag and don't include checked baggage. If you want checked baggage, you'll have to pay for it during the booking process, which will be cheaper than paying in person at the airport.

Several airlines operate along these routes that offer flights that are better for the environment with reduced emissions. KLM stopover flights via CDG are some of the best flights, with a 42% reduction in Co2 emissions. United Airlines flights via Montreal Airport (YUL) come with 34% fewer emissions.