Cheap flight deals from London to San Francisco

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from London to San Francisco?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

6 13
13 20
20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15
15 22
22 29

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

When are flight tickets from London (LON) to San Francisco (SFO) the cheapest?

Airlines adjust prices for flights from London to San Francisco based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from London (LON) to San Francisco (SFO) cost?

According to Trip.com's data, the lowest price is around Rp 20,949,323.
How long does it take to fly from London (LON) to San Francisco (SFO) and what is the distance?

It takes around 11 hours 3 minutes to fly from London (LON) to San Francisco (SFO).
What is the transportation method from the main airport to downtown in San Francisco?
- The distance from San Francisco International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
What are the most popular airlines that fly from London (LON) to San Francisco (SFO)?

Airlines with flights from London (LON) to San Francisco (SFO): Delta Air Lines, Iberia, Alaska Airlines, Lufthansa, Finnair, British Airways, American Airlines, Swiss Airlines, Air Canada, United Airlines, Brussels Airlines, Air New Zealand and Aer Lingus.

How to find a cheap flight from London to San Francisco

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from London to San Francisco. Book your flights at the right time and save more.

Be flexible with your travel dates to get the cheapest London to San Francisco ticket.

Tap "Date" in the flight search bar to browse the calendar and find airfare from London to San Francisco for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is Rp 19995414 for a one-way ticket on Mon, Apr 28.

Compare cheap London to San Francisco flight deals from hundreds of airlines.

Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from London to San Francisco. The most affordable airline currently operating on this route is Virgin Atlantic.

Set up a Price Alert to track fare drops.

Set up a Price Alert for your London to San Francisco route to track ticket prices effortlessly—no need to check manually every day.

Don't miss out on cheap London to San Francisco flight deals and promo codes.

Stay updated on the latest deals with Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership to unlock even more exclusive flight discounts.

Book early or wait unitl the last minute to fine the best fares.

It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.

Search for flights on the go.

For the best booking experience on the go, download Trip.com and search for cheap flights from London to San Francisco to access exclusive deals just for you.

Flight Info | London to San Francisco

Cheapest one-way flight price	Rp 5,856,454
Cheapest round-trip ticket price	Rp 8,587,479
Off-season for travel	May
Peak season for travel	June
Flight distance	8,628.48 km
Average flight time	11 hours 3 minutes
Popular airline	Finnair