Cheap Flight Tickets from London (LHR) to San Francisco (SFO), Starting at $806

Good to Know: Cheapest and Fastest LHR - SFO Flights

Useful information for finding best airline tickets from London Heathrow to San Francisco International on your next trip.

Cheapest Round Trip Flight

$806

UA United Airlines • 1 stop • 39h 11m

Aug 10 – Aug 23

The cheapest round trip flight from London to San Francisco (LHR-SFO-LHR) is currently $806

🔍 Search Flights

Cheapest One way Flight

$1348

VS Virgin Atlantic • 1 stop • 35h 2m

Aug 04

The cheapest one way flight from London to San Francisco (LHR-SFO) is currently $1348

🔍 Search Flights

Cheapest Direct Flight

$1920

UA United Airlines • nonstop • 17h 35m

Aug 10

The cheapest nonstop flight from London to San Francisco (LHR-SFO) is currently $1920

🔍 Search Flights

Fastest Flight

17h 35m

The fastest nonstop flight from London to San Francisco (LHR-SFO) takes 17h 35m

Top Airlines Flying from London to San Francisco

Turkish Airlines - TK

Turkish Airlines

Delta Airline, DL

Delta Airlines

Air France-AF

Air France

Virgin Atlantic (VS)

Virgin Atlantic

United Airlines, UA

United Airlines

Lufthansa Airline (LH)

Lufthansa Airlines

WestJet Airlines

WestJet Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Iberia airline

Iberia Airlines

Latest Flight Deals from London (LHR) to San Francisco (SFO)

Compare and book low fare round-trip air tickets from London to San Francisco. Ideal for travelers with confirmed return itineraries.

Aug 10 - Aug 23, Economy
UA
London → San Francisco
39h 11m
2:50 PM - 6:41 AM • 1 stop
UA
London → San Francisco
17h
7:50 PM - 2:10 PM • nonstop
$806
United Airlines
Aug 10 - Aug 23, Economy
B6
London → San Francisco
40h 23m
8:15 AM - 12:38 AM • 1 stop
B6
London → San Francisco
27h
8:25 PM - 8:45 PM • 1 stop
$1546
JetBlue Airways
Aug 10 - Aug 23, Economy
B6
London → San Francisco
30h 42m
8:40 AM - 7:22 PM • 1 stop
B6
London → San Francisco
27h
8:25 PM - 8:45 PM • 1 stop
$1546
JetBlue Airways
Aug 10 - Aug 23, Economy
SK
London → San Francisco
42h 15m
9:05 PM - 2:40 PM • 2 stops
SK
London → San Francisco
54h 10m
4:45 PM - 9:35 AM • 2 stops
$1702
Scandinavian Airlines
Aug 10 - Aug 23, Economy
EI
London → San Francisco
30h 20m
1:25 PM - 11:45 PM • 2 stops
EI
London → San Francisco
28h 35m
5:40 PM - 6:55 PM • 1 stop
$1941
Aer Lingus
Aug 10 - Aug 23, Economy
BA
London → San Francisco
18h 30m
2:30 PM - 5:40 PM • nonstop
AA
London → San Francisco
17h 5m
7:30 PM - 1:55 PM • nonstop
$2122
British Airways

Fly from London to San Francisco with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from London to San Francisco? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on London to San Francisco Flights

What are the airports in London?
LHR
What’s the most popular airline flying from LHR to SFO?
The most popular airline flying from London to San Francisco are
Can I fly from LHR to SFO non-stop?
Yes, you can fly LHR to SFO non-stop on
Which airlines fly nonstop between London and San Francisco?
The non-stop flights between London and San Francisco are .
What’s the earliest departure time from LHR to SFO Airport?
The earliest flight leaves LHR at 6:20 am and lands in SFO - San Francisco International
What are the airports in San Francisco?
SFO
Can I make changes to my London to San Francisco flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from LHR to SFO?
Read the fare rules of the London to San Francisco air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from London and San Francisco?
operate flights between London and San Francisco
How long does a flight from London to San Francisco take?
It takes approximately 11 hour to fly non-stop from LHR to SFO, which is 5367.55 miles by air.
Which airlines provide the cheapest flights from London (LHR) to San Francisco (SFO) ?
In the past couple of days, the cheapest tickets to SFO from LHR were found on EI : USD 2026
Do I need a passport to fly between LHR and SFO?
Yes
What’s the latest departure time from LHR to SFO ?
The last flight leaves LHR at 9:10 pm

Essential Information for Booking Flights from London (LHR) - AI Insights

What's the cheapest airline from lhr to sfo?
You can find affordable flights from London Heathrow to San Francisco International Airport on TAP - Air Portugal. For a round-trip economy ticket, consider booking at least 25 days in advance to secure low fares. This airline offers budget-friendly options for your group of five passengers.
What's the popular airline to fly from lhr to sfo?
You can fly from London Heathrow to San Francisco International Airport with Aer Lingus, a popular airline that offers budget-friendly flights. As you're booking a Round Trip journey, it's recommended to book in advance to secure the best airfares. With 25 days of lead time, you can expect to find affordable options.
What's the cheapest day of the week to fly from lhr to sfo?
The cheapest day to fly from London Heathrow (LHR) to San Francisco International Airport (SFO) is Thursday. Flying on this day can result in low fares, making it a budget-friendly option for your round-trip journey.
What's the cheapest month to fly from lhr to sfo?
The cheapest month to fly from London Heathrow (LHR) to San Francisco International (SFO) is November. Flying during this time can help you save on airfares, as it's considered a low season for flights to the US West Coast.
Which airline/airlines fly from lhr to sfo?
Several airlines operate direct flights from London Heathrow to San Francisco International Airport. These include TAP - Air Portugal (TP), Scandinavian Airlines (SK), Vueling (VY), China Eastern Airlines (MU), Ryanair (FR), EVA Air (BR), KLM Airlines (KL), Aer Lingus (EI), Delta Airlines (DL), and Alaska Airlines (AS). You can find the most up-to-date flight information on airline websites or through airfare comparison platforms.
What is the cheapest airline to fly from London Heathrow to San Francisco International?
TAP - Air Portugal (TP)
How far in advance can I book flights for my round trip to San Francisco?
Advance booking days: 25
Can I find cheap airfares on fareleaders.com for my upcoming weekend getaway?
Yes, search for cheap airfares on fareleaders.com
What are the available flight options for a group of 5 passengers traveling economy?
Group booking available for 5 passengers in Economy (Unknown cabin class)
Is it possible to book flights directly through fareleaders.com or do I need to use a travel agency?
Book flights directly on fareleaders.com
How can I get the best deals on flights from London Heathrow to San Francisco International?
Search for cheap airfares, check airline schedules and fares

London (LHR) to San Francisco (SFO): Airport Information

Origin Airport London Heathrow , London, GB
Destination Airport San Francisco International , San Francisco, US
Distance 5368 miles

More Flight Options for London (LHR) and San Francisco (SFO)

Why Fareleaders for LHR to SFO Plane Tickets

Lowest Prices
Lowest Prices
Uncover the best deals on London to San Francisco flights by comparing fares from hundreds of airlines and agencies.
New Deals
New Deals Everyday
Get the best prices on LHR to SFO flights—we update our fares daily so you never miss a saving.
Best Travel Options
No Service Fees
Compare hundreds of London to San Francisco flights and secure the best deals—we never add any service fees.
Get Fare Drop Alert
Be the first to know when fares drop for the London (LHR) to San Francisco (SFO)
Terms and Conditions*