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Cheap flights from San Francisco to London from $458

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 4/15. 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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0 bags

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Find the cheapest flights from San Francisco to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
2:55 pm - 5:00 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$776Delta
Mon, Mar 16 - Tue, Mar 31
Delta Logo
2:55 pm - 5:00 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
5:35 pm - 12:50 pm
SOU
-
SFO
26h 15m
1 stop
$777Delta
Mon, Mar 16 - Tue, Mar 24
Delta Logo
5:50 am - 8:20 am
SFO
-
SOU
19h 30m
2 stops
Delta Logo
9:05 am - 11:45 am
SOU
-
SFO
34h 40m
1 stop
$780Delta
Mon, Mar 16 - Tue, Mar 31
Delta Logo
10:55 pm - 8:20 am
SFO
-
SOU
26h 25m
2 stops
Delta Logo
8:50 am - 12:50 pm
SOU
-
SFO
35h 00m
1 stop
$781Delta
Sun, Mar 15 - Tue, Mar 24
Delta Logo
2:55 pm - 5:00 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
5:35 pm - 11:15 pm
SOU
-
SFO
36h 40m
2 stops
$787Delta
Mon, Mar 16 - Wed, Mar 25
Delta Logo
7:00 am - 8:20 am
SFO
-
SOU
18h 20m
2 stops
Delta Logo
5:20 pm - 4:04 pm
SOU
-
SFO
30h 44m
2 stops
$790Delta
Wed, Mar 18 - Tue, Mar 31
Delta Logo
1:45 pm - 4:50 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$791Delta
Mon, Apr 13 - Thu, May 21
Delta Logo
1:45 pm - 4:50 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$792Delta
Tue, Mar 31 - Thu, Apr 9
Delta Logo
5:59 am - 4:50 pm
SFO
-
SOU
26h 51m
2 stops
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$796Delta
Mon, Apr 13 - Thu, May 21
Delta Logo
5:50 am - 8:35 am
SFO
-
SOU
18h 45m
2 stops
Delta Logo
5:20 pm - 4:31 pm
SOU
-
SFO
31h 11m
2 stops
$805Delta
Sun, Apr 12 - Thu, May 21

Delta flights from San Francisco to Southampton

Our best Delta deals on San Francisco to Southampton flight tickets
Delta
Mar 16
SFO2:55 pmSan Francisco
19h 05m
1 stop
SOU5:00 pmSouthampton Eastleigh
Mar 31
SOU5:20 pmSouthampton Eastleigh
26h 25m
1 stop
SFO11:45 amSan Francisco
$776
Delta
Mar 16
SFO2:55 pmSan Francisco
19h 05m
1 stop
SOU5:00 pmSouthampton Eastleigh
Mar 24
SOU5:35 pmSouthampton Eastleigh
26h 15m
1 stop
SFO12:50 pmSan Francisco
$777
Delta
Mar 16
SFO5:50 amSan Francisco
19h 30m
2 stops
SOU8:20 amSouthampton Eastleigh
Mar 31
SOU9:05 amSouthampton Eastleigh
34h 40m
1 stop
SFO11:45 amSan Francisco
$780

KLM flights from San Francisco to Southampton

Our best KLM deals on San Francisco to Southampton flight tickets
KLM
Mar 17
SFO2:55 pmSan Francisco
19h 05m
1 stop
SOU5:00 pmSouthampton Eastleigh
Mar 24
SOU5:35 pmSouthampton Eastleigh
26h 15m
1 stop
SFO12:50 pmSan Francisco
$842
KLM
Mar 17
SFO9:15 amSan Francisco
16h 05m
2 stops
SOU8:20 amSouthampton Eastleigh
Mar 24
SOU8:50 amSouthampton Eastleigh
35h 00m
1 stop
SFO12:50 pmSan Francisco
$846
KLM
Mar 17
SFO7:00 amSan Francisco
18h 20m
2 stops
SOU8:20 amSouthampton Eastleigh
Mar 24
SOU8:50 amSouthampton Eastleigh
20h 46m
2 stops
SFO10:36 pmSan Francisco
$856

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 February 17, 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

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/16

2:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Tue 3/31

5:20 pm-11:45 am

1 stop26h 25m

$776

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/16

2:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Tue 3/24

5:35 pm-12:50 pm

1 stop26h 15m

$777

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/16

5:50 am-8:20 am

2 stops19h 30m

Southampton Eastleigh

Tue 3/31

9:05 am-11:45 am

1 stop34h 40m

$780

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 3/15

10:55 pm-8:20 am

2 stops26h 25m

Southampton Eastleigh

Tue 3/24

8:50 am-12:50 pm

1 stop35h 00m

$781

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/16

2:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Wed 3/25

5:35 pm-11:15 pm

2 stops36h 40m

$787

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 3/18

7:00 am-8:20 am

2 stops18h 20m

Southampton Eastleigh

Tue 3/31

5:20 pm-4:04 pm

2 stops30h 44m

$790

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 4/13

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Thu 5/21

5:20 pm-11:45 am

1 stop26h 25m

$791

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 3/31

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Thu 4/9

5:20 pm-11:45 am

1 stop26h 25m

$792

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 4/13

5:59 am-4:50 pm

2 stops26h 51m

Southampton Eastleigh

Thu 5/21

5:20 pm-11:45 am

1 stop26h 25m

$796

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 4/12

5:50 am-8:35 am

2 stops18h 45m

Southampton Eastleigh

Thu 5/21

5:20 pm-4:31 pm

2 stops31h 11m

$805

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

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

You could potentially save up to 25% 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

Fastest flight time

18h 45m

Direct flights

None
The fastest flight from San Francisco to Southampton takes 18h 45m
There are no direct flights from San Francisco to Southampton. There are no popular flight routes from San Francisco to Southampton.
Search flight deals

  • 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 18h 45m.

  • 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
1,455 reviews
Search Aer Lingus flights

Traveling 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?

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.

An easier way to manage your Southampton trip

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