$497 Cheap Flights from San Francisco (SFO) to Southampton (SOU)

Popular airlines from San Francisco Intl. Airport (SFO) to Southampton (SOU)

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Find available prices by choosing your travel dates.

Cheap Flights from San Francisco to Southampton (SFO-SOU)

Prices were available within the past 7 days and start at $497 for one-way flights and $714 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Aer Lingus
Aer Lingus
Virgin Atlantic
Delta
Delta
Delta
Virgin Atlantic
Virgin Atlantic
KLM
Flights from San Francisco (SFO) to Southampton (SOU)
Origin airport
San Francisco Intl.
Destination airport
Southampton
Airlines serving
Aer Lingus, Delta, KLM, Virgin Atlantic
Roundtrip price
$713
Distance
5353 mi

San Francisco to Southampton Flights

The cheapest times to fly from San Francisco to Southampton

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 San Francisco to Southampton are during the month of May. You can find some of the cheapest flights from San Francisco to Southampton with Expedia's search tool and vast selection of airlines.

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

Sunday is one of the best days to book for cheap flights from San Francisco to Southampton: 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 San Francisco to Southampton

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 San Francisco to Southampton in 2025. You can also book with separate airlines for your outbound and return journeys, from $497 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 San Francisco to Southampton 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 San Francisco to Southampton 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.

Frequently asked questions

Is it cheaper to buy a plane ticket from SFO to Southampton Airport (SOU) last minute?
Booking your trip from San Francisco Intl. Airport (SFO) to Southampton Airport last minute could help you save if you’re lucky to find a real steal. However, airfares usually don’t drop in price as the date of departure nears. If you wait around, flights could also be booked up or the best seats taken (because who wants the middle seat?). If you want to be on the safe side, book well ahead of when you want to leave. Don’t forget that some of the biggest bargains can be found up to 12 months in advance. If your favorite carrier hasn’t released its airfares yet, check back regularly as offers are constantly updated on Expedia.
What airports do you fly into for Southampton from San Francisco?
From San Francisco, you can journey to Southampton through Southampton Airport (SOU), Bournemouth Intl. Airport (BOH) and Heathrow Airport (LHR). Determine which airport is the best option for you before you make a decision. If you opt for Southampton Airport (SOU), it’s around 4 mi northeast of the downtown area. Use the cash you save when booking your airfare with Expedia to tour the city’s top sights, such as Southampton Maritime Museum and University of Southampton.
Can I change the date of my flight from San Francisco Airport to SOU?
Make changes quickly to your San Francisco Intl. Airport (SFO) to Southampton Airport (SOU) trip through the Expedia Trips portal. Before you make any amendments, read through the fare rules in your itinerary to learn what the airline will let you do and if fees apply for changes. Some airlines have a change fee per person, plus any difference in fare prices. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also visit our Customer Service portal to find the answers to your questions and to chat with our Virtual Agent.

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*Available to One Key members.