San Francisco SFO to London Heathrow Flights (SFO to LHR): Nonstop Airlines, Flight Time and Tips

Three airlines fly it nonstop

San Francisco to London Heathrow is a nonstop route with daily service, so there is no need to connect. As of recent schedules, British Airways, Virgin Atlantic and United each fly nonstop between SFO and LHR. British Airways usually offers the most departures, sometimes two a day in the busy months, and United runs the route as part of its Star Alliance network.

Because airlines sell seats on their partners' flights, you may also see American listed on a British Airways departure, or Delta on a Virgin Atlantic one. The aircraft and the crew belong to the operating airline, which is the one that decides baggage, seating and meal rules on the day.

One-stop fares through New York, Boston, Chicago or Dublin exist and are worth a look only if the dates or loyalty programme suit you. For most travellers the nonstop saves several hours on a trip that is already close to 11 hours.

Route fact	SFO to LHR
Distance	about 5,360 miles (8,620 km)
Eastbound flight time	roughly 10 to 10.5 hours
Westbound flight time	roughly 11 to 11.5 hours
Nonstop airlines	British Airways, Virgin Atlantic, United
Time difference	London is 8 hours ahead of San Francisco

Flight time and the great-circle path

The flight covers about 5,360 miles, tracking north over Canada, Hudson Bay and the southern tip of Greenland rather than crossing the continental US. Eastbound it typically takes 10 to 10.5 hours, helped by the jet stream. The westbound return from London is usually 11 to 11.5 hours.

The typical pattern is an afternoon or early-evening departure from San Francisco that lands at Heathrow late morning or around midday the next day. If you prefer to arrive in the evening and go straight to bed, look for a morning departure when one is scheduled, but most of the week's flights follow the afternoon pattern.

Departing SFO

All international flights to London leave from the International Terminal, which has two piers: A and G. As of recent schedules, British Airways and Virgin Atlantic use the A gates, while United uses the G gates. The terminal is connected to BART, which runs from San Francisco, Oakland and the East Bay straight to the airport, making it one of the easier US airports to reach without a car.

Security in the International Terminal is usually busiest from mid-afternoon, when Asian and European departures overlap. Leave a margin, especially on Friday and Sunday afternoons.

Arriving at Heathrow and onward to London

British Airways flights normally arrive at Terminal 5, Virgin Atlantic at Terminal 3 and United at Terminal 2. Once the UK ETA has been approved, most US passport holders can use the eGates, which usually move faster than the staffed desks.

The quickest way into London is the Heathrow Express to Paddington, about 15 minutes. The Elizabeth line is slightly slower but runs straight through the West End and the City, which makes it the better choice if you are staying east of Paddington. The Piccadilly line is the budget option and is the most direct for Earl's Court, South Kensington and Knightsbridge.

Jet lag: eight hours east

London runs eight hours ahead of San Francisco for most of the year, and seven hours for a short spell in March and in late October or early November, because the two countries change their clocks on different weekends.

The common mistake is sleeping straight after take-off, when it is still afternoon in San Francisco. You will sleep better, and wake up closer to London time, if you stay up for dinner and then try to sleep in the second half of the flight. On arrival, a walk in daylight and a normal London bedtime do more than any nap.

Documents for the UK

US citizens can visit the UK for a short stay without a visa but must have an Electronic Travel Authorisation (ETA) before boarding. Apply only through the official UK government app or GOV.UK, which costs less than third-party services. Your passport should be valid for the length of your stay.

Travellers on other passports should check the GOV.UK entry rules for their nationality, as the requirements differ.

Best times of year to fly

Summer and the December holidays are the peak periods on this route, and the nonstops fill early for those dates. Shoulder months such as May, September and early October tend to combine reasonable London weather with easier availability. Winter brings short days and grey skies in London but quieter museums and cheaper hotels.

Tech-industry conferences in both cities also push up demand on particular weeks, so if your dates are flexible, check a few days either side before you commit.

What travellers often miss

Some fares advertised as San Francisco to London land at Gatwick rather than Heathrow, or connect from Oakland or San Jose. Read the airport codes on both ends before booking.

The other easy miss is the BART timetable. Trains run frequently during the day but less often late at night, so if you return on an evening arrival, check the last train or plan a ride home.