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Cheap flights from California to London from $425

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to London departing on 7/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:55 pm - 5:00 pm
SFO
-
SOU
19h 05m
1 stop
Multiple Airlines Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$751Multiple Airlines
Mon, Mar 23 - Tue, Mar 31
KLM Logo
9:25 am - 8:20 am
LAX
-
SOU
15h 55m
2 stops
KLM Logo
8:50 am - 10:05 pm
SOU
-
LAX
20h 15m
2 stops
$770KLM
Mon, Mar 9 - Tue, Mar 24
Delta Logo
7:25 am - 5:00 pm
SFO
-
SOU
26h 35m
2 stops
Delta Logo
9:05 am - 11:45 am
SOU
-
SFO
34h 40m
1 stop
$775Delta
Mon, Mar 23 - Tue, Mar 31
Delta Logo
7:25 am - 5:00 pm
SFO
-
SOU
26h 35m
2 stops
Delta Logo
5:20 pm - 10:36 pm
SOU
-
SFO
37h 16m
2 stops
$780Delta
Mon, Mar 23 - Tue, Mar 31
KLM Logo
7:45 am - 8:20 am
LAX
-
SOU
17h 35m
2 stops
KLM Logo
5:20 pm - 11:50 am
SOU
-
LAX
26h 30m
1 stop
$784KLM
Tue, Mar 24 - Tue, Mar 31
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
$790Delta
Tue, Mar 31 - Wed, Apr 8
Scandinavian Airlines Logo
8:30 am - 8:35 am
LAX
-
SOU
16h 05m
2 stops
Scandinavian Airlines Logo
5:20 pm - 11:50 am
SOU
-
LAX
26h 30m
1 stop
$804Scandinavian Airlines
Sun, Mar 29 - Wed, Apr 8
Scandinavian Airlines Logo
8:30 am - 8:35 am
LAX
-
SOU
16h 05m
2 stops
Scandinavian Airlines Logo
9:05 am - 9:07 pm
SOU
-
LAX
20h 02m
2 stops
$813Scandinavian Airlines
Sun, Mar 29 - Wed, Apr 8
Aer Lingus Logo
10:10 pm - 8:40 am
LAS
-
SOU
26h 30m
2 stops
Aer Lingus Logo
9:10 am - 12:24 am
SOU
-
LAS
23h 14m
2 stops
$1,420Aer Lingus
Sun, Jun 28 - Sat, Jul 18
Aer Lingus Logo
10:24 am - 7:30 pm
LAS
-
SOU
25h 06m
2 stops
Aer Lingus Logo
9:10 am - 12:24 am
SOU
-
LAS
23h 14m
2 stops
$1,434Aer Lingus
Sun, Jun 28 - Sat, Jul 18

Aer Lingus flights from California to Southampton

Our best Aer Lingus deals on California to Southampton flight tickets
Aer Lingus
May 10
SFO5:35 pmSan Francisco
15h 00m
1 stop
SOU4:35 pmSouthampton Eastleigh
Jun 29
SOU9:10 amSouthampton Eastleigh
14h 40m
1 stop
SFO3:50 pmSan Francisco
$1,015
Aer Lingus
Mar 2
SFO5:20 pmSan Francisco
14h 15m
1 stop
SOU3:35 pmSouthampton Eastleigh
Mar 16
SOU8:10 pmSouthampton Eastleigh
27h 25m
1 stop
SFO4:35 pmSan Francisco
$1,018
Aer Lingus
Mar 16
SFO6:20 pmSan Francisco
14h 15m
1 stop
SOU3:35 pmSouthampton Eastleigh
Mar 26
SOU8:10 pmSouthampton Eastleigh
27h 25m
1 stop
SFO4:35 pmSan Francisco
$1,019

KLM flights from California to Southampton

Our best KLM deals on California to Southampton flight tickets
KLM
Mar 9
LAX9:25 amLos Angeles
15h 55m
2 stops
SOU8:20 amSouthampton Eastleigh
Mar 24
SOU8:50 amSouthampton Eastleigh
20h 15m
2 stops
LAX10:05 pmLos Angeles
$770
KLM
Mar 24
LAX7:45 amLos Angeles
17h 35m
2 stops
SOU8:20 amSouthampton Eastleigh
Mar 31
SOU5:20 pmSouthampton Eastleigh
26h 30m
1 stop
LAX11:50 amLos Angeles
$784
KLM
Mar 24
SJC1:25 pmSan Jose
20h 35m
2 stops
SOU5:00 pmSouthampton Eastleigh
Mar 31
SOU5:20 pmSouthampton Eastleigh
32h 11m
2 stops
SJC5:31 pmSan Jose
$789

momondo Fare Finder

 
Customize your flight search to find flights from California 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 8, 2026.
Use the filters below to find and compare flights from California to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/23

2:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Tue 3/31

5:20 pm-11:45 am

1 stop26h 25m

$751

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 3/9

9:25 am-8:20 am

2 stops15h 55m

Southampton Eastleigh

Tue 3/24

8:50 am-10:05 pm

2 stops20h 15m

$770

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/23

7:25 am-5:00 pm

2 stops26h 35m

Southampton Eastleigh

Tue 3/31

9:05 am-11:45 am

1 stop34h 40m

$775

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/23

7:25 am-5:00 pm

2 stops26h 35m

Southampton Eastleigh

Tue 3/31

5:20 pm-10:36 pm

2 stops37h 16m

$780

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 3/24

7:45 am-8:20 am

2 stops17h 35m

Southampton Eastleigh

Tue 3/31

5:20 pm-11:50 am

1 stop26h 30m

$784

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 3/31

1:45 pm-8:35 am

1 stop34h 50m

Southampton Eastleigh

Wed 4/8

5:20 pm-11:45 am

1 stop26h 25m

$790

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 3/29

8:30 am-8:35 am

2 stops16h 05m

Southampton Eastleigh

Wed 4/8

5:20 pm-11:50 am

1 stop26h 30m

$804

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 3/29

8:30 am-8:35 am

2 stops16h 05m

Southampton Eastleigh

Wed 4/8

9:05 am-9:07 pm

2 stops20h 02m

$813

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Sun 6/28

10:10 pm-8:40 am

2 stops26h 30m

Southampton Eastleigh

Sat 7/18

9:10 am-12:24 am

2 stops23h 14m

$1,420

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Sun 6/28

10:24 am-7:30 pm

2 stops25h 06m

Southampton Eastleigh

Sat 7/18

9:10 am-12:24 am

2 stops23h 14m

$1,434

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 California 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 California to Southampton flights?

You could potentially save up to 26% on your flight if you consider stops on a California to Southampton flight.

Cheap California to Southampton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to Southampton

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from California to Southampton takes 12h 25m
There are no direct flights from California to Southampton. There are no popular flight routes from California to Southampton.
Search flight deals

  • When did momondo last update prices for flights from California to Southampton Eastleigh Airport?

    Prices for flights from California to Southampton Eastleigh Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from California to Southampton Eastleigh Airport?

  • How old do you have to be to fly from California 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 California to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from California to Southampton

Compare and see reviews for airlines that fly from California to Southampton with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $684Free CancellationRating
7.9
8,173 reviews
Search Delta flights
KLMPriceFrom $771Free CancellationRating
7.7
1,450 reviews
Search KLM flights
Aer LingusPriceFrom $797Free CancellationRating
7.2
1,446 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 California 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 California to Southampton for you.

Can I find flights from California to Southampton with flexible booking policies on momondo?

All flight searches from California to Southampton on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from California to Southampton?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from California to Southampton.

I’m not ready to book a flight from California to Southampton right now. Can momondo alert me if prices change?

Price alerts on flights to Southampton from California 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.

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