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Cheap flights from San Francisco to London from $413

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 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Francisco to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:40 pm - 11:05 am
SFO
-
SOU
33h 25m
2 stops
Multiple Airlines Logo
9:20 am - 3:55 pm
SOU
-
SFO
14h 35m
1 stop
$943Multiple Airlines
Tue, Sep 29 - Wed, Oct 7
Aer Lingus Logo
5:40 pm - 8:40 am
SFO
-
SOU
31h 00m
1 stop
Aer Lingus Logo
9:20 am - 3:55 pm
SOU
-
SFO
14h 35m
1 stop
$969Aer Lingus
Tue, Sep 29 - Wed, Oct 7
Delta Logo
1:45 pm - 8:35 am
SFO
-
SOU
34h 50m
1 stop
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$995Delta
Tue, Sep 29 - Mon, Oct 12
Delta Logo
11:48 am - 4:50 pm
SFO
-
SOU
21h 02m
2 stops
Delta Logo
9:05 am - 11:45 am
SOU
-
SFO
34h 40m
1 stop
$999Delta
Tue, Sep 29 - Tue, Oct 13
Delta Logo
1:45 pm - 4:50 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
9:05 am - 9:35 pm
SOU
-
SFO
20h 30m
2 stops
$1,004Delta
Tue, Sep 29 - Fri, Oct 9
Delta Logo
3:16 pm - 4:50 pm
SFO
-
SOU
17h 34m
2 stops
Delta Logo
9:05 am - 9:35 pm
SOU
-
SFO
20h 30m
2 stops
$1,009Delta
Tue, Sep 29 - Fri, Oct 9
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
$1,016Delta
Mon, Sep 28 - Mon, Oct 12
Delta Logo
6:13 am - 8:45 am
SFO
-
SOU
18h 32m
2 stops
Delta Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$1,020Delta
Tue, Aug 25 - Mon, Sep 7
Delta Logo
11:59 pm - 8:45 am
SFO
-
SOU
24h 46m
2 stops
Delta Logo
5:30 pm - 11:45 am
SOU
-
SFO
26h 15m
1 stop
$1,022Delta
Sun, Aug 2 - Tue, Nov 17
Delta Logo
1:45 pm - 4:50 pm
SFO
-
SOU
19h 05m
1 stop
Delta Logo
9:05 am - 11:51 pm
SOU
-
SFO
22h 46m
2 stops
$1,025Delta
Wed, Sep 16 - Fri, Oct 2

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KLM flights from San Francisco to Southampton

Our best KLM deals on San Francisco to Southampton flight tickets
KLM
Sep 16
SFO1:45 pmSan Francisco
34h 50m
1 stop
SOU8:35 amSouthampton Eastleigh
Oct 2
SOU9:05 amSouthampton Eastleigh
18h 58m
2 stops
SFO8:03 pmSan Francisco
$1,027
KLM
Sep 16
SFO1:45 pmSan Francisco
34h 50m
1 stop
SOU8:35 amSouthampton Eastleigh
Oct 2
SOU5:20 pmSouthampton Eastleigh
26h 25m
1 stop
SFO11:45 amSan Francisco
$1,125
KLM
Aug 6
SFO1:45 pmSan Francisco
35h 00m
1 stop
SOU8:45 amSouthampton Eastleigh
Aug 22
SOU9:15 amSouthampton Eastleigh
18h 28m
2 stops
SFO7:43 pmSan Francisco
$1,127

Aer Lingus flights from San Francisco to Southampton

Our best Aer Lingus deals on San Francisco to Southampton flight tickets
Aer Lingus
Sep 29
SFO5:40 pmSan Francisco
31h 00m
1 stop
SOU8:40 amSouthampton Eastleigh
Oct 7
SOU9:20 amSouthampton Eastleigh
14h 35m
1 stop
SFO3:55 pmSan Francisco
$969
Aer Lingus
Aug 6
SFO5:35 pmSan Francisco
15h 15m
1 stop
SOU4:50 pmSouthampton Eastleigh
Aug 22
SOU9:20 amSouthampton Eastleigh
14h 35m
1 stop
SFO3:55 pmSan Francisco
$1,058
Aer Lingus
Aug 6
SFO5:35 pmSan Francisco
15h 15m
1 stop
SOU4:50 pmSouthampton Eastleigh
Aug 22
SOU9:20 amSouthampton Eastleigh
14h 35m
1 stop
SFO3:55 pmSan Francisco
$1,059

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 July 5, 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 round-trip

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

5:40 pm-11:05 am

2 stops33h 25m

Southampton Eastleigh

Wed 10/7

9:20 am-3:55 pm

1 stop14h 35m

$943

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

5:40 pm-8:40 am

1 stop31h 00m

Southampton Eastleigh

Wed 10/7

9:20 am-3:55 pm

1 stop14h 35m

$969

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

1:45 pm-8:35 am

1 stop34h 50m

Southampton Eastleigh

Mon 10/12

5:20 pm-11:45 am

1 stop26h 25m

$995

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

11:48 am-4:50 pm

2 stops21h 02m

Southampton Eastleigh

Tue 10/13

9:05 am-11:45 am

1 stop34h 40m

$999

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Fri 10/9

9:05 am-9:35 pm

2 stops20h 30m

$1,004
Quickest round-trip

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/29

3:16 pm-4:50 pm

2 stops17h 34m

Southampton Eastleigh

Fri 10/9

9:05 am-9:35 pm

2 stops20h 30m

$1,009

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 9/28

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Mon 10/12

5:20 pm-11:45 am

1 stop26h 25m

$1,016

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 8/25

6:13 am-8:45 am

2 stops18h 32m

Southampton Eastleigh

Mon 9/7

5:20 pm-11:45 am

1 stop26h 25m

$1,020

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 8/2

11:59 pm-8:45 am

2 stops24h 46m

Southampton Eastleigh

Tue 11/17

5:30 pm-11:45 am

1 stop26h 15m

$1,022

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 9/16

1:45 pm-4:50 pm

1 stop19h 05m

Southampton Eastleigh

Fri 10/2

9:05 am-11:51 pm

2 stops22h 46m

$1,025

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 50% 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

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?

    There are 5341.3 mi between San Francisco and Southampton Eastleigh. 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 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 $923Free CancellationRating
7.3
1,642 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.

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