Cheap Flights from London (SEN) to San Francisco (SFO)

Popular airlines from London (SEN-Southend) to San Francisco Intl. Airport (SFO)

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Frequently asked questions

How much does a flight from Southend Airport (SEN) to San Francisco Intl. Airport (SFO) cost?
Get a cheap one-way flight or cheap return flight from Southend Airport (SEN) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Southend Airport (SEN) to San Francisco Intl. Airport (SFO)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between SEN and SFO. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Southend Airport (SEN) to San Francisco Intl. Airport (SFO)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEN to SFO flight.
How many flights per day from Southend Airport (SEN) to San Francisco Intl. Airport (SFO)?
You'll need to catch a flight with a layover if you're traveling from Southend Airport (SEN) to San Francisco Intl. Airport (SFO). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from SEN to SFO?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Southend Airport (SEN) to San Francisco Intl. Airport (SFO)?
To arrive at San Francisco Intl. Airport (SFO) without delays, pick a flight that leaves Southend Airport (SEN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Southend Airport (SEN) to San Francisco Intl. Airport (SFO) last-minute?
Booking your flight from SEN to SFO shortly before your getaway is usually more expensive. However, if there's some wiggle room with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a SEN to SFO flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEN to SFO flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of travel planning. Just secure your flights and choose from our extensive range of stays, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Southend Airport (SEN) to San Francisco Intl. Airport (SFO)?
If you reserved your SEN to SFO flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Southend
Destination airport
San Francisco Intl.
Distance
5383 mi

Book with confidence

London to San Francisco Flights

The cheapest times to fly from London to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to San Francisco are during the month of . You can find some of the cheapest flights from London to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to San Francisco

Sunday is one of the best days to book for cheap flights from London to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to San Francisco in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

London to San Francisco Flights
*Available to One Key members.