What is the cheapest airline to fly from London Stansted Airport to San Francisco round-trip?

Currently priced at $640, Lufthansa will fly you from London Stansted Airport to San Francisco and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip.

What is the cheapest month to book a flight from London Stansted Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from London Stansted Airport to San Francisco (average of $276). Flying from London Stansted Airport to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

How far in advance should I book a flight from London Stansted Airport to San Francisco?

Users have found that booking a flight from London Stansted Airport to San Francisco at least 61 days early can save you up to 17% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from London Stansted Airport to San Francisco for as little as $614 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $736 for flights departing within the next 3 days.

What is the cheapest month to fly from London Stansted Airport to San Francisco?

Our data shows that February tends to be the cheapest month to fly to San Francisco from London Stansted Airport. Users have commonly found prices around $674 for the month, but tickets can be as low as $454. Due to multiple factors, prepare for potentially higher prices in July.

What is the cheapest time of day to fly from STN to SFO?

When flying from London Stansted Airport to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to San Francisco from London Stansted?

If you book a flight to San Francisco from London Stansted, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from London Stansted to San Francisco per day from 0 different airlines.

Can I find deals for flights from Stansted to San Francisco that include hotel bookings?

Yes. In addition to deals on Stansted to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Stansted to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to San Francisco.

Can I find deals for business class flights from Stansted to San Francisco?

Yes. Cheapflights offers flight deals from Stansted to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$583+ Flights from London Stansted Airport to San Francisco

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Cheap flight deals from Stansted to San Francisco

Round-trip from	$583 (Mytrip)
Popular in	July
Cheapest in	February
Average price	$891

From London Stansted to San Francisco

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($137 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Stansted to San Francisco

Cheapest flights from Stansted to San Francisco
Explore the most affordable flight options available from Stansted to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 9/911:25 amSTN - SFO

2 stops35h 10mMultiple Airlines

Tue 9/166:45 pmSFO - STN

2 stops21h 25mMultiple Airlines

Deal found 7/27

$583

Wed 9/247:50 pmSTN - SFO

1 stop26h 40mLufthansa

Thu 10/22:00 pmSFO - STN

1 stop21h 00mLufthansa

Deal found 7/29

$640

Best flights from Stansted to San Francisco
Discover carefully curated flight deals from Stansted to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 9/911:25 amSTN - SFO

2 stops35h 10mMultiple Airlines

Tue 9/166:45 pmSFO - STN

2 stops21h 25mMultiple Airlines

Deal found 7/27

$583

Wed 9/247:50 pmSTN - SFO

1 stop26h 40mLufthansa

Thu 10/22:00 pmSFO - STN

1 stop21h 00mLufthansa

Deal found 7/29

$640

Last-minute flights from Stansted to San Francisco
Discover last-minute flight deals from Stansted to San Francisco. Data last updated July 29, 2025 and is based on user searches.

Mon 8/410:00 pmSTN - SFO

2 stops29h 57mMultiple Airlines

Mon 8/118:20 amSFO - STN

2 stops28h 40mMultiple Airlines

Deal found 7/27

$1,227

Mon 8/252:55 pmSTN - SFO

2 stops33h 35mMultiple Airlines

Mon 9/17:40 pmSFO - STN

2 stops17h 20mMultiple Airlines

Deal found 7/28

$604

One-way flights from Stansted to San Francisco
Search for one-way flight options from Stansted to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Tue 9/98:25 pmSTN - SFO

1 stop26h 10mMultiple Airlines

Deal found 7/27

$585

Mon 9/297:50 pmSTN - SFO

1 stop26h 40mLufthansa

Deal found 7/27

$640

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Stansted Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 9/9

11:25 am-2:35 pm

2 stops35h 10m

San Francisco

Tue 9/16

6:45 pm-12:10 am

2 stops21h 25m

$583

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 9/24

7:50 pm-2:30 pm

1 stop26h 40m

San Francisco

Thu 10/2

2:00 pm-7:00 pm

1 stop21h 00m

$640

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 9/9

8:25 pm-2:35 pm

1 stop26h 10m

$585

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 9/29

7:50 pm-2:30 pm

1 stop26h 40m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Stansted to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Stansted with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing San Francisco

Peruse reviews from past customers who have flown with Lufthansa from London Stansted Airport to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Lufthansa

6.8

Okay

7,265 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

BHX - FRA

Not as good as when I traveled many years ago. My main problem was missing my flight from Frankfurt to Birmingham because of very late start from LA and was told delay wil be made up but then I had to wait 5 hours for my next booked fight . Asian vegetarian food was skimpy and horrible.

Lufthansa

6.8

Okay

7,265 reviews

Lufthansa

6.8

Okay

7,265 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Mar 2025

BHX - FRA

Related info for your journey

What airport do you fly into for flights to San Francisco from London Stansted?
If you book a flight to San Francisco from London Stansted, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from London Stansted to San Francisco per day from 0 different airlines.
What is the cheapest airline to fly from London Stansted Airport to San Francisco round-trip?
Currently priced at $640, Lufthansa will fly you from London Stansted Airport to San Francisco and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Stansted to San Francisco that include hotel bookings?
Yes. In addition to deals on Stansted to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Stansted to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to San Francisco.
Can I find deals for business class flights from Stansted to San Francisco?
Yes. Cheapflights offers flight deals from Stansted to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Stansted Airport to San Francisco?
Currently, January is the cheapest month in which you can book a flight from London Stansted Airport to San Francisco (average of $276). Flying from London Stansted Airport to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$583+ Cheap flights from Stansted (STN) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Stansted to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Stansted to San Francisco

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Stansted to San Francisco

Cheapest flights from Stansted to San FranciscoExplore the most affordable flight options available from Stansted to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Stansted to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Stansted Airport to San Francisco that are best for you.

Best time to book a flight from Stansted to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Stansted with our price prediction graph.

Reviews of airlines servicing San Francisco

Peruse reviews from past customers who have flown with Lufthansa from London Stansted Airport to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Stansted to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Francisco from London Stansted?

What is the cheapest airline to fly from London Stansted Airport to San Francisco round-trip?

Can I find deals for flights from Stansted to San Francisco that include hotel bookings?

How can I find direct flights from Stansted to San Francisco?

Can I find deals for business class flights from Stansted to San Francisco?

What is the cheapest month to book a flight from London Stansted Airport to San Francisco?

Traveling to a place near San Francisco?

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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Stansted to San Francisco

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Travel Smart

Cheapest flights from Stansted to San Francisco
Explore the most affordable flight options available from Stansted to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.