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United · Route guide

United Airlines San Francisco (SFO) to London Heathrow Route Overview

Everything you need to fly San Francisco to London: when to go, who flies it, what it costs, and how to land well.

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1 airline on this route · Daily Year-Round

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Airline

United Airlines

Aircraft

Boeing 777-200ER

Service

Daily Year-Round

Region

Europe

The route

The route from San Francisco to London Heathrow is one of the most significant transatlantic corridors, connecting the technology center of the United States with the United Kingdom's primary global hub. Operated by United Airlines, this flight offers consistent daily service for travelers moving between the West Coast and Europe.

United Airlines provides year-round, daily service from San Francisco International Airport (SFO) to London Heathrow (LHR). This long-haul flight typically utilizes the Boeing 777-200ER, ensuring a reliable schedule for both corporate and leisure passengers crossing the Atlantic.

This service is a cornerstone of United's international network, facilitating essential business travel for the Silicon Valley region and serving as a major gateway for tourists. Heathrow's status as a global hub allows passengers arriving from San Francisco to easily connect to hundreds of destinations across Europe, Africa, and the Middle East.

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Airports

Taking off, touching down.

Check-in, security, connections and getting into town at both ends of the flight.

Departure

San Francisco International Airport (SFO)

SFO

Check-in: International flights depart from the International Terminal; passengers should arrive at least 3 hours before departure.
Security: TSA PreCheck is available, but security lines can be longer during the evening peak international departure window.
Connections: Easily accessible via BART and the SFO AirTrain which connects all terminals and parking garages.

Arrival

London Heathrow Airport (LHR)

LHR

On arrival: United arrives at Terminal 2, known as The Queen's Terminal, which features modern amenities and efficient customs processing.
Ground transport: The Heathrow Express and Elizabeth Line offer the fastest rail connections to central London stations like Paddington.
Planning ahead: Eligible travelers should use the e-passport gates to significantly reduce immigration wait times.

Timing & fares

When it flies, what it costs.

Schedule & reliability

Schedule: Flights generally depart SFO in the late afternoon or evening, arriving at LHR the following morning or afternoon.
Duration: Eastbound flights are typically faster than westbound flights due to high-altitude jet streams.
Seasonality: This route operates on a consistent daily schedule throughout the entire year.
Time zones: London is 8 hours ahead of San Francisco time.

Fares & booking

Booking window: For the best value, monitor prices approximately 4 months before your intended travel date.
Cabin advice: Considering the 10-hour duration, upgrading to Premium Plus or Polaris offers significant comfort benefits.
Peak pricing: Fares rise sharply during the summer holidays and the December festive period.

Book at least 90 to 120 days in advance to secure the most competitive fares.
Travel on Tuesdays or Wednesdays to find lower pricing compared to weekend departures.
Use United MileagePlus miles for potential cabin upgrades on this long-haul segment.

Peak season

June to August and the second half of December.

Shoulder season

April to May and September to October.

Off-peak season

January to early March.

Tours and experiences at either end

Vetted day trips and activities in London and San Francisco, through our travel partner.

Browse tours

When to fly

Best Time to Fly San Francisco to London

01
Spring (April - May)
Ideal for mild weather and seeing London's parks in bloom with fewer crowds than summer.
02
Autumn (September - October)
Excellent travel conditions and more affordable airfare compared to the peak July season.
03
Winter (January - February)
The best time for budget-conscious travelers to find the lowest possible fares.

Trip planning

Who this route suits best.

Corporate Travelers

The daily schedule and premium cabin amenities cater to those needing to arrive ready for work.

Vacationing Families

Direct flights minimize transit stress and provide a straightforward entry point to Europe.

Connections & alternatives

Edinburgh

Heathrow offers frequent short-haul connections for travelers heading to the Scottish capital.

Paris

London is a perfect starting point for a multi-city trip including a short flight or train to France.

Dublin

Quick hop across the Irish Sea for those exploring Ireland after their arrival from the US.

Field notes

Travel Tips for the San Francisco-London Route

Visa & entry

United States citizens currently do not require a visa for short-term tourism or business visits to the UK.
Passports must be valid for the duration of your stay in the United Kingdom.
Keep documentation of your return flight or onward travel ready for presentation at immigration.

Airport transfers

The Elizabeth Line is the most cost-effective way to reach the City of London directly from Heathrow.
Pre-booked private transfers can be more convenient for those traveling with heavy luggage.
London's iconic Black Cabs are available at Terminal 2 but are the most expensive transit option.

Baggage & transit

Check your specific fare class baggage allowance as it varies between Basic Economy and Polaris.
Keep essential medications and electronics in your carry-on due to the length of the flight.
Ensure all checked luggage has durable tags with updated contact information.

Checklist

Valid Passport
Universal power adapter for UK Type G outlets
Mobile boarding pass via the United app
Travel insurance documentation

Carriers

Airlines Flying San Francisco to London

United Airlines

Daily

Utilizes the Boeing 777-200ER with multiple cabin classes including Polaris.

FAQ

Common questions.

Straight answers about flying San Francisco to London.

Does United Airlines fly direct from San Francisco to London Heathrow?

Yes, United operates a direct daily service between SFO and LHR using the Boeing 777-200ER.

Which terminal does United use at London Heathrow?

United Airlines operates out of Terminal 2, also known as The Queen's Terminal.

How long is the flight from SFO to London?

The flight duration is typically around 10 hours and 30 minutes, depending on weather and air traffic.

What aircraft is used for the UA-SFO-LHR route?

United primarily uses the Boeing 777-200ER for this specific flight route.

Is food provided on the United flight to London?

Yes, as a long-haul international flight, United provides complimentary meals and beverages in all cabin classes.

Keep exploring

Where to next.

Structured data verified

Airports

San Francisco (SFO) (SAN)London Heathrow Airport (LHR)San Francisco International Airport London Heathrow Airport

Countries & layovers

United States United Kingdom London layover guide San Francisco layover guide

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Three steps

1Search the United Airlines flight number on Borderly to view historical delay data and performance.
2Enable notifications in the United app for real-time updates on gate changes and boarding times.
3Use Heathrow's official flight tracking tool for precise arrival and terminal information.

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