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Cheap flights from San Francisco to London from £318

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 12/8. 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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Find the cheapest flights from San Francisco to London

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
13:45 - 16:50
SFO
-
SOU
19h 05m
1 stop
Delta Logo
09:05 - 11:45
SOU
-
SFO
34h 40m
1 stop
£741Delta
Tue, 15 Sep - Mon, 12 Oct
Delta Logo
13:45 - 08:35
SFO
-
SOU
34h 50m
1 stop
Delta Logo
17:20 - 11:45
SOU
-
SFO
26h 25m
1 stop
£742Delta
Sun, 13 Sep - Thu, 24 Sep
KLM Logo
13:45 - 16:50
SFO
-
SOU
19h 05m
1 stop
KLM Logo
17:20 - 11:45
SOU
-
SFO
26h 25m
1 stop
£742KLM
Mon, 21 Sep - Wed, 7 Oct
KLM Logo
07:00 - 08:45
SFO
-
SOU
17h 45m
2 stops
KLM Logo
17:20 - 11:45
SOU
-
SFO
26h 25m
1 stop
£745KLM
Tue, 25 Aug - Mon, 7 Sep
Delta Logo
07:00 - 08:35
SFO
-
SOU
17h 35m
2 stops
Delta Logo
17:20 - 11:45
SOU
-
SFO
26h 25m
1 stop
£745Delta
Mon, 14 Sep - Wed, 23 Sep
Delta Logo
07:53 - 08:45
SFO
-
SOU
16h 52m
2 stops
Delta Logo
18:05 - 11:45
SOU
-
SFO
25h 40m
1 stop
£746Delta
Tue, 18 Aug - Wed, 26 Aug
Delta Logo
13:45 - 16:50
SFO
-
SOU
19h 05m
1 stop
Delta Logo
09:05 - 23:41
SOU
-
SFO
22h 36m
2 stops
£748Delta
Tue, 15 Sep - Thu, 15 Oct
Delta Logo
13:45 - 08:35
SFO
-
SOU
34h 50m
1 stop
Delta Logo
09:05 - 18:08
SOU
-
SFO
17h 03m
2 stops
£749Delta
Sun, 13 Sep - Fri, 25 Sep
KLM Logo
07:00 - 08:35
SFO
-
SOU
17h 35m
2 stops
KLM Logo
09:05 - 21:35
SOU
-
SFO
20h 30m
2 stops
£751KLM
Wed, 16 Sep - Fri, 2 Oct
Delta Logo
07:00 - 08:35
SFO
-
SOU
17h 35m
2 stops
Delta Logo
09:05 - 18:08
SOU
-
SFO
17h 03m
2 stops
£752Delta
Wed, 16 Sep - Fri, 25 Sep

KLM flights from San Francisco to Southampton

Our best KLM deals on San Francisco to Southampton flight tickets
KLM
21 Sept
SFO13:45San Francisco
19h 05m
1 stop
SOU16:50Southampton Eastleigh
7 Oct
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SFO11:45San Francisco
£742
KLM
25 Aug
SFO07:00San Francisco
17h 45m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SFO11:45San Francisco
£745
KLM
16 Sept
SFO07:00San Francisco
17h 35m
2 stops
SOU08:35Southampton Eastleigh
2 Oct
SOU09:05Southampton Eastleigh
20h 30m
2 stops
SFO21:35San Francisco
£751

Delta flights from San Francisco to Southampton

Our best Delta deals on San Francisco to Southampton flight tickets
Delta
15 Sept
SFO13:45San Francisco
19h 05m
1 stop
SOU16:50Southampton Eastleigh
12 Oct
SOU09:05Southampton Eastleigh
34h 40m
1 stop
SFO11:45San Francisco
£741
Delta
13 Sept
SFO13:45San Francisco
34h 50m
1 stop
SOU08:35Southampton Eastleigh
24 Sept
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SFO11:45San Francisco
£742
Delta
14 Sept
SFO07:00San Francisco
17h 35m
2 stops
SOU08:35Southampton Eastleigh
23 Sept
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SFO11:45San Francisco
£745

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 22 May 2026.
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

Cheapest return flight

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 15/9

13:45-16:50

1 stop19h 05m

Southampton Eastleigh

Mon 12/10

09:05-11:45

1 stop34h 40m

£741

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 13/9

13:45-08:35

1 stop34h 50m

Southampton Eastleigh

Thu 24/9

17:20-11:45

1 stop26h 25m

£742

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 21/9

13:45-16:50

1 stop19h 05m

Southampton Eastleigh

Wed 7/10

17:20-11:45

1 stop26h 25m

£742

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 25/8

07:00-08:45

2 stops17h 45m

Southampton Eastleigh

Mon 7/9

17:20-11:45

1 stop26h 25m

£745

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 14/9

07:00-08:35

2 stops17h 35m

Southampton Eastleigh

Wed 23/9

17:20-11:45

1 stop26h 25m

£745

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 18/8

07:53-08:45

2 stops16h 52m

Southampton Eastleigh

Wed 26/8

18:05-11:45

1 stop25h 40m

£746

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 15/9

13:45-16:50

1 stop19h 05m

Southampton Eastleigh

Thu 15/10

09:05-23:41

2 stops22h 36m

£748

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 13/9

13:45-08:35

1 stop34h 50m

Southampton Eastleigh

Fri 25/9

09:05-18:08

2 stops17h 03m

£749

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 16/9

07:00-08:35

2 stops17h 35m

Southampton Eastleigh

Fri 2/10

09:05-21:35

2 stops20h 30m

£751
Fastest return journey

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 16/9

07:00-08:35

2 stops17h 35m

Southampton Eastleigh

Fri 25/9

09:05-18:08

2 stops17h 03m

£752

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, KLM, 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 45% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 5 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

Fastest flight time

15h 15m

Direct flights

None
The fastest flight from San Francisco to Southampton takes 15h 15m
There are no direct flights from San Francisco to Southampton. There are no popular flight routes from San Francisco to Southampton.
Search flight deals

Frequently asked questions about flying from San Francisco to Southampton

  • How far is San Francisco to Southampton Eastleigh by plane?

    The straight-line distance from San Francisco to Southampton Eastleigh is 5341.3 mi. By plane, this route typically takes 15h 15m.

  • 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.

An easier way to manage your Southampton trip

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