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Cheap flights from San Francisco to London from $537

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 12/16. 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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Cheap round-trip flights

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Delta Logo
1:55 pm - 8:10 amSFO-SOU
34h 15m1 stop
Delta Logo
8:40 am - 11:50 amSOU-SFO
35h 10m1 stop
$759Delta
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Sun, Nov 16 - Mon, Nov 24
Delta Logo
12:30 am - 5:25 pmSFO-SOU
32h 55m2 stops
Delta Logo
8:40 am - 11:50 amSOU-SFO
35h 10m1 stop
$763Delta
Find Deal
Sat, Nov 15 - Wed, Nov 26
KLM Logo
1:55 pm - 5:00 pmSFO-SOU
19h 05m1 stop
KLM Logo
6:05 pm - 11:50 amSOU-SFO
25h 45m1 stop
$817KLM
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Thu, Dec 4 - Sun, Dec 7
KLM Logo
7:00 am - 8:05 amSFO-SOU
17h 05m2 stops
KLM Logo
6:05 pm - 11:50 amSOU-SFO
25h 45m1 stop
$822KLM
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Thu, Dec 4 - Sun, Dec 7
Aer Lingus Logo
5:20 pm - 3:35 pmSFO-SOU
14h 15m1 stop
Aer Lingus Logo
8:10 pm - 3:35 pmSOU-SFO
27h 25m1 stop
$1,014Aer Lingus
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Tue, Nov 18 - Tue, Dec 2
Aer Lingus Logo
5:20 pm - 3:35 pmSFO-SOU
14h 15m1 stop
Aer Lingus Logo
8:10 pm - 3:35 pmSOU-SFO
27h 25m1 stop
$1,043Aer Lingus
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Wed, Dec 3 - Fri, Dec 12
Multiple Airlines Logo
7:25 pm - 8:45 amSFO-SOU
29h 20m3 stops
Multiple Airlines Logo
9:30 am - 12:40 pmSOU-SFO
35h 10m3 stops
$1,165Multiple Airlines
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Thu, Dec 4 - Sun, Dec 7
Multiple Airlines Logo
1:00 pm - 8:45 amSFO-SOU
35h 45m3 stops
Multiple Airlines Logo
8:10 pm - 3:00 pmSOU-SFO
26h 50m2 stops
$1,272Multiple Airlines
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Thu, Dec 4 - Sun, Dec 7
British Airways Logo
5:30 pm - 7:25 pmSFO-SOU
17h 55m2 stops
British Airways Logo
9:30 am - 3:35 pmSOU-SFO
14h 05m1 stop
$1,537British Airways
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Wed, Dec 3 - Fri, Dec 12
British Airways Logo
5:20 pm - 7:40 pmSFO-SOU
18h 20m1 stop
British Airways Logo
8:50 pm - 6:45 pmSOU-SFO
29h 55m2 stops
$1,557British Airways
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Tue, Nov 18 - Tue, Nov 25

British Airways flights from San Francisco to Southampton

Our best British Airways deals on San Francisco to Southampton flight tickets
British Airways
Dec 3
SFO5:30 pmSan Francisco
17h 55m
2 stops
SOU7:25 pmSouthampton Eastleigh
Dec 12
SOU9:30 amSouthampton Eastleigh
14h 05m
1 stop
SFO3:35 pmSan Francisco
$1,537
Find similar
British Airways
Nov 19
SFO5:20 pmSan Francisco
18h 20m
1 stop
SOU7:40 pmSouthampton Eastleigh
Dec 3
SOU7:55 pmSouthampton Eastleigh
27h 05m
2 stops
SFO3:00 pmSan Francisco
$1,556
Find similar
British Airways
Nov 18
SFO5:20 pmSan Francisco
18h 20m
1 stop
SOU7:40 pmSouthampton Eastleigh
Nov 25
SOU8:50 pmSouthampton Eastleigh
29h 55m
2 stops
SFO6:45 pmSan Francisco
$1,557
Find similar

Aer Lingus flights from San Francisco to Southampton

Our best Aer Lingus deals on San Francisco to Southampton flight tickets
Aer Lingus
Nov 18
SFO5:20 pmSan Francisco
14h 15m
1 stop
SOU3:35 pmSouthampton Eastleigh
Dec 2
SOU8:10 pmSouthampton Eastleigh
27h 25m
1 stop
SFO3:35 pmSan Francisco
$1,014
Find similar
Aer Lingus
Dec 3
SFO5:20 pmSan Francisco
14h 15m
1 stop
SOU3:35 pmSouthampton Eastleigh
Dec 12
SOU8:10 pmSouthampton Eastleigh
27h 25m
1 stop
SFO3:35 pmSan Francisco
$1,043
Find similar
Aer Lingus
Nov 24
SFO5:20 pmSan Francisco
14h 15m
1 stop
SOU3:35 pmSouthampton Eastleigh
Dec 1
SOU8:10 pmSouthampton Eastleigh
27h 25m
1 stop
SFO3:35 pmSan Francisco
$1,071
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated November 6, 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

Sun 11/16

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Mon 11/24

8:40 am-11:50 am

1 stop35h 10m

$759

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sat 11/15

12:30 am-5:25 pm

2 stops32h 55m

Southampton Eastleigh

Wed 11/26

8:40 am-11:50 am

1 stop35h 10m

$763

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 12/4

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Sun 12/7

6:05 pm-11:50 am

1 stop25h 45m

$817

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 12/4

7:00 am-8:05 am

2 stops17h 05m

Southampton Eastleigh

Sun 12/7

6:05 pm-11:50 am

1 stop25h 45m

$822

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/18

5:20 pm-3:35 pm

1 stop14h 15m

Southampton Eastleigh

Tue 12/2

8:10 pm-3:35 pm

1 stop27h 25m

$1,014

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 12/3

5:20 pm-3:35 pm

1 stop14h 15m

Southampton Eastleigh

Fri 12/12

8:10 pm-3:35 pm

1 stop27h 25m

$1,043

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 12/4

7:25 pm-8:45 am

3 stops29h 20m

Southampton Eastleigh

Sun 12/7

9:30 am-12:40 pm

3 stops35h 10m

$1,165

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 12/4

1:00 pm-8:45 am

3 stops35h 45m

Southampton Eastleigh

Sun 12/7

8:10 pm-3:00 pm

2 stops26h 50m

$1,272

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 12/3

5:30 pm-7:25 pm

2 stops17h 55m

Southampton Eastleigh

Fri 12/12

9:30 am-3:35 pm

1 stop14h 05m

$1,537

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/18

5:20 pm-7:40 pm

1 stop18h 20m

Southampton Eastleigh

Tue 11/25

8:50 pm-6:45 pm

2 stops29h 55m

$1,557

Flights are sorted by cheapest round-trip 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 day to depart on your flight to Southampton?

On average, the least expensive day to fly to Southampton from San Francisco is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $979. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Southampton for around $1,217.

What is the cheapest time of day to depart on your flight to Southampton?

Flying to Southampton from San Francisco at noon is the least expensive time of day to depart. momondo users have found prices as low as $982 when looking at flights departing at noon. Flights to Southampton are more costly in the evening, with an average ticket price of $1,199. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on San Francisco to Southampton flights?

You could potentially save up to 19% on your flight if you consider stops on a San Francisco to Southampton flight.

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 round-trip 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

Direct flights

None
There are no direct flights from San Francisco to Southampton. There are no popular flight routes from San Francisco to Southampton.
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  • How far is San Francisco to Southampton Eastleigh by plane?

    There are 5341.1 mi between San Francisco and Southampton Eastleigh. By plane, this route typically takes 13h 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 many operators does momondo search 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?

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
Aer LingusPriceFrom $946Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights

Traveling to a place near London?

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

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