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Cheap flights from San Francisco to London from £370

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 27/10. 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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0 bags
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Cheap return flights

Delta Logo
13:45 - 08:45SFO-SOU
35h 00m1 stop
Delta Logo
17:35 - 11:45SOU-SFO
26h 10m1 stop
£635Delta
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Thu, 21 Aug - Thu, 28 Aug
Delta Logo
13:45 - 08:45SFO-SOU
35h 00m1 stop
Delta Logo
17:35 - 17:17SOU-SFO
31h 42m2 stops
£643Delta
Find Deal
Thu, 4 Sep - Tue, 9 Sep
Delta Logo
13:45 - 08:45SFO-SOU
35h 00m1 stop
Delta Logo
09:20 - 21:29SOU-SFO
20h 09m2 stops
£643Delta
Find Deal
Thu, 21 Aug - Fri, 29 Aug
Delta Logo
22:59 - 08:45SFO-SOU
25h 46m2 stops
Delta Logo
09:20 - 22:41SOU-SFO
21h 21m2 stops
£646Delta
Find Deal
Thu, 4 Sep - Wed, 10 Sep
KLM Logo
13:45 - 08:45SFO-SOU
35h 00m1 stop
KLM Logo
09:20 - 11:45SOU-SFO
34h 25m1 stop
£656KLM
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Thu, 4 Sep - Sun, 14 Sep
KLM Logo
13:45 - 08:45SFO-SOU
35h 00m1 stop
KLM Logo
09:20 - 11:45SOU-SFO
34h 25m1 stop
£657KLM
Find Deal
Thu, 4 Sep - Sun, 14 Sep
Aer Lingus Logo
17:40 - 08:15SFO-SOU
30h 35m1 stop
Aer Lingus Logo
09:10 - 15:55SOU-SFO
14h 45m1 stop
£712Aer Lingus
Find Deal
Sun, 14 Sep - Sun, 21 Sep
Aer Lingus Logo
17:40 - 09:10SFO-SOU
31h 30m1 stop
Aer Lingus Logo
09:40 - 15:55SOU-SFO
14h 15m1 stop
£744Aer Lingus
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Sat, 23 Aug - Sat, 13 Sep
Logo
08:40 - 19:30SFO-SOU
26h 50m3 stops
Logo
09:10 - 21:24SOU-SFO
20h 14m2 stops
£938
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Sun, 14 Sep - Sun, 21 Sep
Logo
08:40 - 19:30SFO-SOU
26h 50m3 stops
Logo
09:10 - 13:57SOU-SFO
36h 47m3 stops
£958
Find Deal
Sun, 14 Sep - Sun, 21 Sep

Delta flights from San Francisco to Southampton

Our best Delta deals on San Francisco to Southampton flight tickets
Delta
21 Aug
SFO13:45San Francisco
35h 00m
1 stop
SOU08:45Southampton Eastleigh
28 Aug
SOU17:35Southampton Eastleigh
26h 10m
1 stop
SFO11:45San Francisco
£635
Find similar
Delta
4 Sept
SFO13:45San Francisco
35h 00m
1 stop
SOU08:45Southampton Eastleigh
9 Sept
SOU17:35Southampton Eastleigh
31h 42m
2 stops
SFO17:17San Francisco
£643
Find similar
Delta
21 Aug
SFO13:45San Francisco
35h 00m
1 stop
SOU08:45Southampton Eastleigh
29 Aug
SOU09:20Southampton Eastleigh
20h 09m
2 stops
SFO21:29San Francisco
£643
Find similar

British Airways flights from San Francisco to Southampton

Our best British Airways deals on San Francisco to Southampton flight tickets
British Airways
12 Aug
SFO19:20San Francisco
16h 05m
2 stops
SOU19:25Southampton Eastleigh
21 Aug
SOU09:40Southampton Eastleigh
14h 15m
1 stop
SFO15:55San Francisco
£1,693
Find similar
British Airways
14 Aug
SFO06:28San Francisco
21h 32m
2 stops
SOU12:00Southampton Eastleigh
21 Aug
SOU09:40Southampton Eastleigh
14h 15m
1 stop
SFO15:55San Francisco
£1,738
Find similar
British Airways
5 Aug
SFO09:26San Francisco
18h 34m
2 stops
SOU12:00Southampton Eastleigh
12 Aug
SOU09:10Southampton Eastleigh
14h 45m
1 stop
SFO15:55San Francisco
£2,659
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from San Francisco to Southampton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 August 2025.
Use the filters below to find and compare flights from San Francisco to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 21/8

13:45-08:45

1 stop35h 00m

Southampton Eastleigh

Thu 28/8

17:35-11:45

1 stop26h 10m

£635

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 4/9

13:45-08:45

1 stop35h 00m

Southampton Eastleigh

Tue 9/9

17:35-17:17

2 stops31h 42m

£643

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 21/8

13:45-08:45

1 stop35h 00m

Southampton Eastleigh

Fri 29/8

09:20-21:29

2 stops20h 09m

£643

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 4/9

22:59-08:45

2 stops25h 46m

Southampton Eastleigh

Wed 10/9

09:20-22:41

2 stops21h 21m

£646

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 4/9

13:45-08:45

1 stop35h 00m

Southampton Eastleigh

Sun 14/9

09:20-11:45

1 stop34h 25m

£656

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 4/9

13:45-08:45

1 stop35h 00m

Southampton Eastleigh

Sun 14/9

09:20-11:45

1 stop34h 25m

£657

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 14/9

17:40-08:15

1 stop30h 35m

Southampton Eastleigh

Sun 21/9

09:10-15:55

1 stop14h 45m

£712

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sat 23/8

17:40-09:10

1 stop31h 30m

Southampton Eastleigh

Sat 13/9

09:40-15:55

1 stop14h 15m

£744

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 14/9

08:40-19:30

3 stops26h 50m

Southampton Eastleigh

Sun 21/9

09:10-21:24

2 stops20h 14m

£938

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 14/9

08:40-19:30

3 stops26h 50m

Southampton Eastleigh

Sun 21/9

09:10-13:57

3 stops36h 47m

£958

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 airline that flies from San Francisco to Southampton Eastleigh?

Aer Lingus and Delta are the most popular carriers operating from San Francisco to Southampton Eastleigh

Which airlines fly to Southampton?

Virgin Atlantic, United Airlines and British Airways are the top three most popular airlines that fly to Southampton from San Francisco according to our data. Virgin Atlantic is the first choice among our users, with 36% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 8 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

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

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

Best price found

£370

Fastest flight time

14h 15m

Direct flights

None

Airports in Southampton

1 airport
The best one-way flight to Southampton from San Francisco in the past 72 hours is £370. The best return flight deal from San Francisco to Southampton found on momondo in the last 72 hours is £635.
The fastest flight from San Francisco to Southampton takes 14h 15m
There are no direct flights from San Francisco to Southampton. Popular non-direct route for this connection is San Francisco Airport - Southampton Eastleigh Airport.
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
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  • How far is San Francisco to Southampton Eastleigh by plane?

    The straight-line distance from San Francisco to Southampton Eastleigh is 5341.1 mi. By plane, this route typically takes 15h 57m.

  • 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 old do you have to be to fly from San Francisco Airport to Southampton Eastleigh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 required for your trip to Southampton Eastleigh Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southampton Eastleigh Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Southampton?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Southampton for you.

Can I find flights from San Francisco to Southampton with flexible booking policies on momondo?

All flight searches from San Francisco to Southampton on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Francisco to Southampton?

momondo provides multiple filters to help you find the best flight to Southampton from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to Southampton right now. Can momondo alert me if prices change?

Price alerts on flights to Southampton from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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