$357 Find Cheap Flights from San Francisco to London - Compare and Save

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

• Earliest: departs at 12:50 pm and lands at 11:19 pm
• Latest: departs at 9:35 pm and lands at 8:04 am.

The flight takes about 10h 29m.

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

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

Prices vary by airline.

A nonstop flight from San Francisco to London takes 10h 29m, covering 5,358 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.

Round-trip flights from San Francisco to London range from $727 to $1,180, with an average of $922 over the past 12 months. Anything below $727 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 7% above the $922 route average. Book 15 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $495 round-trip via San Diego (SAN), compared to $948 for nonstop.

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

• British Airways: 92% on time
• Virgin Atlantic: 88% on time
• United Airlines: 87% on time

Overall, flights on this route are punctual 89% of the time on average.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

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

One-way fares from San Francisco to London are currently lower than usual. Average one-way flight prices are about $380, which is 26% below the typical average for this route.

Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) — daily rates averaging $39:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Hertz

Near London Gatwick Airport (LGW) — daily rates averaging $39:

• GREEN MOTION
• DRIVALIA
• U-Save
• Europcar
• Alamo

Near London City Airport (LCY) — daily rates averaging $40:

• GREEN MOTION
• Budget
• Hertz
• Avis
• Sixt

Near London Stansted Airport (STN) — daily rates averaging $39:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• U-Save

Near London Luton Airport (LTN) — daily rates averaging $41:

• GREEN MOTION
• DRIVALIA
• Alamo
• Europcar
• U-Save

Flights from San Francisco to London usually depart from San Francisco (SFO) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

Evening flights have the fewest delays on this route, while night 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 San Francisco to London route, 11% of flights were delayed in the past 3 months, with delays averaging 2h 29m.

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

• Kastrup Copenhagen (CPH) - 26% of one-stop connections
• Dublin (DUB) - 23% of one-stop connections
• Lisbon Humberto Delgado (LIS) - 17% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 7% of one-stop connections

Yes. Flexible dates can save you up to 9% on flights from San Francisco to London. Wednesday is the cheapest departure day at $892 round-trip on average, while Saturday is the most expensive at $979, a difference of $87.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

• United Airlines
• British Airways
• Virgin Atlantic

Flying via Dublin (DUB) gives the shortest average 1-stop total travel time at 14h 03m, compared with 14h 20m via Chicago O'Hare Intl (ORD) and 14h 25m via Denver Intl (DEN).

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

Some of the most popular sights in London are Hyde Park and Buckingham Palace. These are among the most viewed places in London on KAYAK.

Among airlines operating San Francisco to London flights:

• British Airways: offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Virgin Atlantic: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection
• American Airlines: 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:

• British Airways: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class
• Virgin Atlantic: a cabin bag and a checked bag in Economy Class

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

Yes. Bay Area Rapid Transit (BART) provides direct service from downtown San Francisco to San Francisco International Airport (SFO). SamTrans also serves SFO from San Mateo County and other parts of San Francisco, with stops near Courtyard 2 in Terminal 2 and near Courtyard 4 in Terminal 3. Another option is a taxi, which takes about 30 minutes.

Yes. Heathrow Connect no longer operates. Transport for London (TfL) services replaced it and the Elizabeth line serves Terminal 5.

Yes, San Francisco International Airport (SFO) has nursing rooms for passengers traveling with infants. SFO Kids’ Spot is also available for parents waiting with children before a flight. Children’s play areas are located in Terminal 1 near Gates B2 and B18. In Terminal 2, they are near Gates D15 and D7 after the security area.

Yes, ATMs are available in all terminals at London Heathrow Airport (LHR). Global Exchange offers currency exchange services in Terminals 2, 3, 4 and 5, with 23 exchange offices throughout the airport. Currency can be ordered online for pickup without waiting. Most exchange offices operate from as early as 5 am to 10 pm.

London Heathrow Airport (LHR) is home to St. George’s Chapel and ten interfaith prayer rooms. Each of these prayer rooms is open to all travelers, regardless of their religious affiliations.

LHR is fully accessible for travelers with disabilities. Accessible lifts are located throughout the airport and moving walkways help cover longer distances to the gates. Every terminal also has reserved seating in general seating areas, clearly signed Blue Badge parking spaces and accessible toilets. Guide dogs are allowed at the airport.

Yes, pets are allowed to travel through San Francisco International Airport (SFO). They must remain in their carriers in the terminals, except when using relief areas or passing through security. SFO has pet relief areas in all four terminals. Outdoor relief areas are pre-security and indoor relief areas are post-security.