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Cheap flights from San Francisco to London from $489

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 10/27. 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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Find the cheapest flights from San Francisco to London

Cheap round-trip flights

Delta Logo
1:45 pm - 5:50 pmSFO-SOU
20h 05m1 stop
Delta Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$812Delta
Find Deal
Mon, Aug 11 - Tue, Aug 19
Delta Logo
7:00 am - 5:25 pmSFO-SOU
26h 25m2 stops
Delta Logo
8:40 am - 11:50 amSOU-SFO
35h 10m1 stop
$816Delta
Find Deal
Sun, Dec 7 - Wed, Dec 24
Delta Logo
6:15 am - 8:45 amSFO-SOU
18h 30m2 stops
Delta Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$817Delta
Find Deal
Sun, Aug 10 - Tue, Aug 19
Delta Logo
1:55 pm - 5:25 pmSFO-SOU
19h 30m1 stop
Delta Logo
6:05 pm - 4:17 pmSOU-SFO
30h 12m2 stops
$822Delta
Find Deal
Sun, Dec 7 - Mon, Dec 22
Delta Logo
1:45 pm - 5:50 pmSFO-SOU
20h 05m1 stop
Delta Logo
9:20 am - 7:51 pmSOU-SFO
18h 31m2 stops
$823Delta
Find Deal
Mon, Aug 11 - Fri, Aug 22
KLM Logo
7:00 am - 8:45 amSFO-SOU
17h 45m2 stops
KLM Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$874KLM
Find Deal
Thu, Sep 4 - Sun, Sep 14
KLM Logo
7:00 am - 8:45 amSFO-SOU
17h 45m2 stops
KLM Logo
9:20 am - 11:45 amSOU-SFO
34h 25m1 stop
$875KLM
Find Deal
Thu, Sep 4 - Sun, Sep 14
Logo
8:30 pm - 7:35 amSFO-SOU
27h 05m1 stop
Logo
4:25 pm - 12:23 pmSOU-SFO
51h 58m2 stops
$899
Find Deal
Sat, Sep 13 - Sat, Sep 20
Aer Lingus Logo
5:40 pm - 8:15 amSFO-SOU
30h 35m1 stop
Aer Lingus Logo
9:10 am - 3:55 pmSOU-SFO
14h 45m1 stop
$941Aer Lingus
Find Deal
Sun, Sep 14 - Sun, Sep 21
Aer Lingus Logo
5:40 pm - 9:10 amSFO-SOU
31h 30m1 stop
Aer Lingus Logo
9:40 am - 3:55 pmSOU-SFO
14h 15m1 stop
$984Aer Lingus
Find Deal
Sat, Aug 23 - Sat, Sep 13

Delta flights from San Francisco to Southampton

Our best Delta deals on San Francisco to Southampton flight tickets
Delta
Aug 11
SFO1:45 pmSan Francisco
20h 05m
1 stop
SOU5:50 pmSouthampton Eastleigh
Aug 19
SOU6:25 pmSouthampton Eastleigh
25h 20m
1 stop
SFO11:45 amSan Francisco
$812
Find similar
Delta
Dec 7
SFO7:00 amSan Francisco
26h 25m
2 stops
SOU5:25 pmSouthampton Eastleigh
Dec 24
SOU8:40 amSouthampton Eastleigh
35h 10m
1 stop
SFO11:50 amSan Francisco
$816
Find similar
Delta
Aug 10
SFO6:15 amSan Francisco
18h 30m
2 stops
SOU8:45 amSouthampton Eastleigh
Aug 19
SOU6:25 pmSouthampton Eastleigh
25h 20m
1 stop
SFO11:45 amSan Francisco
$817
Find similar

KLM flights from San Francisco to Southampton

Our best KLM deals on San Francisco to Southampton flight tickets
KLM
Sep 4
SFO7:00 amSan Francisco
17h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 14
SOU6:25 pmSouthampton Eastleigh
25h 20m
1 stop
SFO11:45 amSan Francisco
$874
Find similar
KLM
Sep 4
SFO7:00 amSan Francisco
17h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 14
SOU9:20 amSouthampton Eastleigh
34h 25m
1 stop
SFO11:45 amSan Francisco
$875
Find similar
KLM
Sep 4
SFO7:00 amSan Francisco
17h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 14
SOU6:25 pmSouthampton Eastleigh
25h 20m
1 stop
SFO11:45 amSan Francisco
$876
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 July 31, 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

Mon 8/11

1:45 pm-5:50 pm

1 stop20h 05m

Southampton Eastleigh

Tue 8/19

6:25 pm-11:45 am

1 stop25h 20m

$812

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 12/7

7:00 am-5:25 pm

2 stops26h 25m

Southampton Eastleigh

Wed 12/24

8:40 am-11:50 am

1 stop35h 10m

$816

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 8/10

6:15 am-8:45 am

2 stops18h 30m

Southampton Eastleigh

Tue 8/19

6:25 pm-11:45 am

1 stop25h 20m

$817

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 12/7

1:55 pm-5:25 pm

1 stop19h 30m

Southampton Eastleigh

Mon 12/22

6:05 pm-4:17 pm

2 stops30h 12m

$822

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 8/11

1:45 pm-5:50 pm

1 stop20h 05m

Southampton Eastleigh

Fri 8/22

9:20 am-7:51 pm

2 stops18h 31m

$823

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 9/4

7:00 am-8:45 am

2 stops17h 45m

Southampton Eastleigh

Sun 9/14

6:25 pm-11:45 am

1 stop25h 20m

$874

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 9/4

7:00 am-8:45 am

2 stops17h 45m

Southampton Eastleigh

Sun 9/14

9:20 am-11:45 am

1 stop34h 25m

$875

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sat 9/13

8:30 pm-7:35 am

1 stop27h 05m

Southampton Eastleigh

Sat 9/20

4:25 pm-12:23 pm

2 stops51h 58m

$899

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 9/14

5:40 pm-8:15 am

1 stop30h 35m

Southampton Eastleigh

Sun 9/21

9:10 am-3:55 pm

1 stop14h 45m

$941

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sat 8/23

5:40 pm-9:10 am

1 stop31h 30m

Southampton Eastleigh

Sat 9/13

9:40 am-3:55 pm

1 stop14h 15m

$984

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.

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

Best Price Found

$489

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 $489. The best round-trip flight deal from San Francisco to Southampton found on momondo in the last 72 hours is $812.
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)
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 17h 05m.

  • 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
KLMPriceFrom $747Free CancellationRating
7.8
1,383 reviews
Search KLM flights
DeltaPriceFrom $828Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Aer LingusPriceFrom $946Free CancellationRating
7.1
1,192 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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