Cheap flights from San Francisco to London from $404
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 3/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.Aer Lingus flights from San Francisco to Southampton
Our best Aer Lingus deals on San Francisco to Southampton flight tickets
KLM flights from San Francisco to Southampton
Our best KLM deals on San Francisco to Southampton flight tickets
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Fly from
Fly to
Route
Depart
Return
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Sun 3/21
6:20 pm-7:30 pm
1 stop18h 10m
Southampton Eastleigh
Wed 3/31
9:20 am-3:50 pm
1 stop14h 30m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Tue 1/12
1:50 pm-5:00 pm
1 stop19h 10m
Southampton Eastleigh
Tue 1/19
5:30 pm-11:45 am
1 stop26h 15m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Tue 1/12
10:00 am-5:00 pm
2 stops23h 00m
Southampton Eastleigh
Tue 1/19
5:30 pm-11:45 am
1 stop26h 15m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Tue 1/12
11:35 am-5:00 pm
2 stops21h 25m
Southampton Eastleigh
Tue 1/19
8:40 am-10:39 pm
2 stops21h 59m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Mon 11/9
5:20 pm-8:50 am
1 stop31h 30m
Southampton Eastleigh
Tue 11/17
9:20 am-8:10 pm
2 stops42h 50m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Mon 11/9
1:50 pm-5:05 pm
1 stop19h 15m
Southampton Eastleigh
Tue 11/17
5:35 pm-11:45 am
1 stop26h 10m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Sat 3/13
10:45 pm-8:10 am
2 stops25h 25m
Southampton Eastleigh
Sun 3/28
5:35 pm-11:45 am
1 stop26h 10m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Tue 3/30
1:45 pm-8:45 am
1 stop35h 00m
Southampton Eastleigh
Sun 4/11
5:35 pm-6:48 pm
2 stops33h 13m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Tue 3/30
1:45 pm-8:45 am
1 stop35h 00m
Southampton Eastleigh
Sat 4/10
9:20 am-8:18 pm
2 stops18h 58m
San FranciscoSouthampton
SFO San Francisco - SOU Southampton Eastleigh
SFOSOU
San Francisco
Sun 3/21
11:50 pm-8:50 am
2 stops26h 00m
Southampton Eastleigh
Wed 3/31
9:20 am-3:50 pm
1 stop14h 30m
See travel insights to London from
How to get the cheapest flight ticket from San Francisco to Southampton
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Southampton?
If you don’t want to visit Southampton in February, then you should wait until January to fly from San Francisco, when ticket prices are also cheap, with an average price of $0.
Can stopping save me money on San Francisco to Southampton flights?
You could potentially save up to 11% on your flight if you consider stops on a San Francisco to Southampton flight.
What is the cheapest airline that flies from San Francisco to Southampton Eastleigh?
Delta is the most popular carrier operating from San Francisco to Southampton Eastleigh
What airlines fly to Southampton?
United Airlines, British Airways and Virgin Atlantic are the top three most popular airlines that fly to Southampton from San Francisco according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 21 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.
When to book flights from San Francisco to Southampton
Cheap San Francisco to Southampton (SFO to SOU) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Southampton
Frequently asked questions about flying from San Francisco to Southampton
How far is San Francisco to Southampton Eastleigh by plane?
There are 5341.3 mi between San Francisco and Southampton Eastleigh. By plane, this route typically takes 18h 10m.
When did momondo last update prices for flights from San Francisco Airport to Southampton Eastleigh Airport?
Prices for flights from San Francisco Airport to Southampton Eastleigh Airport were last updated today.
How many operators does momondo search for flights from San Francisco Airport to Southampton Eastleigh Airport?
As of October 2026, there is 1 operator available to choose from for flights from San Francisco Airport to Southampton Eastleigh Airport.
How old do you have to be to fly from San Francisco Airport to Southampton Eastleigh Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The travel and health documents you'll need for your trip to Southampton Eastleigh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southampton Eastleigh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from San Francisco to Southampton?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Southampton is Aer Lingus (100% of total bookings).
Best airlines flying from San Francisco to Southampton
Compare and see reviews for airlines that fly from San Francisco to Southampton with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $923 | Free Cancellation | Rating 7.3 1,817 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Francisco to Southampton?
It is quick and easy to find San Francisco to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.
Can I find flights from San Francisco to Southampton with flexible booking policies on momondo?
Yes. All flights to Southampton from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from San Francisco to Southampton?
momondo helps you find the best flight between San Francisco and Southampton by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from San Francisco to Southampton right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Francisco to Southampton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.