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Cheap flights from California to London from $404

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 10/13. 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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Find the cheapest flights from California to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:50 pm - 8:10 am
SFO
-
SOU
34h 20m
1 stop
Delta Logo
8:50 am - 11:50 am
SOU
-
SFO
35h 00m
1 stop
$998Delta
Sun, Nov 1 - Thu, Nov 12
Delta Logo
8:25 pm - 5:35 pm
LAS
-
SOU
13h 10m
1 stop
Delta Logo
9:15 am - 6:35 pm
SOU
-
LAS
17h 20m
1 stop
$998Delta
Tue, Aug 11 - Wed, Aug 26
KLM Logo
8:25 pm - 8:45 am
LAS
-
SOU
28h 20m
1 stop
KLM Logo
9:15 am - 6:35 pm
SOU
-
LAS
17h 20m
1 stop
$999KLM
Tue, Aug 11 - Wed, Aug 26
Delta Logo
1:50 pm - 5:00 pm
SFO
-
SOU
19h 10m
1 stop
Delta Logo
5:30 pm - 11:50 am
SOU
-
SFO
26h 20m
1 stop
$999Delta
Tue, Nov 3 - Thu, Nov 19
KLM Logo
2:02 pm - 5:35 pm
LAS
-
SOU
19h 33m
2 stops
KLM Logo
6:05 pm - 6:35 pm
SOU
-
LAS
32h 30m
1 stop
$1,003KLM
Tue, Aug 11 - Wed, Aug 26
Delta Logo
9:30 pm - 8:10 am
SFO
-
SOU
26h 40m
2 stops
Delta Logo
5:30 pm - 11:50 am
SOU
-
SFO
26h 20m
1 stop
$1,003Delta
Sun, Nov 1 - Thu, Nov 12
KLM Logo
7:00 am - 8:45 am
SFO
-
SOU
17h 45m
2 stops
KLM Logo
5:20 pm - 11:45 am
SOU
-
SFO
26h 25m
1 stop
$1,004KLM
Tue, Aug 25 - Mon, Sep 7
Multiple Airlines Logo
8:10 pm - 8:45 am
LAX
-
SOU
28h 35m
2 stops
Multiple Airlines Logo
9:20 am - 6:25 pm
SOU
-
LAX
17h 05m
1 stop
$1,095Multiple Airlines
Tue, Sep 22 - Sat, Oct 3
Multiple Airlines Logo
8:10 pm - 7:30 pm
LAX
-
SOU
15h 20m
1 stop
Multiple Airlines Logo
9:20 am - 6:25 pm
SOU
-
LAX
17h 05m
1 stop
$1,132Multiple Airlines
Tue, Sep 22 - Sat, Oct 3
Virgin Atlantic Logo
7:05 am - 8:45 am
LGB
-
SOU
41h 40m
2 stops
Virgin Atlantic Logo
5:20 pm - 9:43 pm
SOU
-
LGB
36h 23m
2 stops
$2,635Virgin Atlantic
Fri, May 22 - Tue, May 26

KLM flights from California to Southampton

Our best KLM deals on California to Southampton flight tickets
KLM
Aug 11
LAS8:25 pmLas Vegas Harry Reid Intl
28h 20m
1 stop
SOU8:45 amSouthampton Eastleigh
Aug 26
SOU9:15 amSouthampton Eastleigh
17h 20m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
$999
KLM
Aug 11
LAS2:02 pmLas Vegas Harry Reid Intl
19h 33m
2 stops
SOU5:35 pmSouthampton Eastleigh
Aug 26
SOU6:05 pmSouthampton Eastleigh
32h 30m
1 stop
LAS6:35 pmLas Vegas Harry Reid Intl
$1,003
KLM
Aug 25
SFO7:00 amSan Francisco
17h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 7
SOU5:20 pmSouthampton Eastleigh
26h 25m
1 stop
SFO11:45 amSan Francisco
$1,004

Aer Lingus flights from California to Southampton

Our best Aer Lingus deals on California to Southampton flight tickets
Aer Lingus
Jun 1
SFO5:35 pmSan Francisco
17h 55m
1 stop
SOU7:30 pmSouthampton Eastleigh
Jun 9
SOU9:20 amSouthampton Eastleigh
14h 35m
1 stop
SFO3:55 pmSan Francisco
$1,128
Aer Lingus
Sep 16
SFO5:40 pmSan Francisco
17h 50m
1 stop
SOU7:30 pmSouthampton Eastleigh
Oct 2
SOU9:20 amSouthampton Eastleigh
14h 30m
1 stop
SFO3:50 pmSan Francisco
$1,130
Aer Lingus
Sep 16
SFO5:40 pmSan Francisco
15h 10m
1 stop
SOU4:50 pmSouthampton Eastleigh
Oct 2
SOU9:20 amSouthampton Eastleigh
14h 30m
1 stop
SFO3:50 pmSan Francisco
$1,131

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 May 9, 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

Cheapest round-trip

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 11/1

1:50 pm-8:10 am

1 stop34h 20m

Southampton Eastleigh

Thu 11/12

8:50 am-11:50 am

1 stop35h 00m

$998
Quickest round-trip

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Tue 8/11

8:25 pm-5:35 pm

1 stop13h 10m

Southampton Eastleigh

Wed 8/26

9:15 am-6:35 pm

1 stop17h 20m

$998

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Tue 8/11

8:25 pm-8:45 am

1 stop28h 20m

Southampton Eastleigh

Wed 8/26

9:15 am-6:35 pm

1 stop17h 20m

$999

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/3

1:50 pm-5:00 pm

1 stop19h 10m

Southampton Eastleigh

Thu 11/19

5:30 pm-11:50 am

1 stop26h 20m

$999

Las VegasSouthampton

LAS - SOU

LASSOU

Las Vegas Harry Reid Intl

Tue 8/11

2:02 pm-5:35 pm

2 stops19h 33m

Southampton Eastleigh

Wed 8/26

6:05 pm-6:35 pm

1 stop32h 30m

$1,003

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 11/1

9:30 pm-8:10 am

2 stops26h 40m

Southampton Eastleigh

Thu 11/12

5:30 pm-11:50 am

1 stop26h 20m

$1,003

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 8/25

7:00 am-8:45 am

2 stops17h 45m

Southampton Eastleigh

Mon 9/7

5:20 pm-11:45 am

1 stop26h 25m

$1,004

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 9/22

8:10 pm-8:45 am

2 stops28h 35m

Southampton Eastleigh

Sat 10/3

9:20 am-6:25 pm

1 stop17h 05m

$1,095

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 9/22

8:10 pm-7:30 pm

1 stop15h 20m

Southampton Eastleigh

Sat 10/3

9:20 am-6:25 pm

1 stop17h 05m

$1,132

Long BeachSouthampton

LGB - SOU

LGBSOU

Long Beach Municipal

Fri 5/22

7:05 am-8:45 am

2 stops41h 40m

Southampton Eastleigh

Tue 5/26

5:20 pm-9:43 pm

2 stops36h 23m

$2,635

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 7% 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.
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Frequently asked questions about flying from California to Southampton

  • 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 $781Free CancellationRating
7.9
8,457 reviews
Search Delta flights
Aer LingusPriceFrom $797Free CancellationRating
7.3
1,551 reviews
Search Aer Lingus flights
KLMPriceFrom $814Free CancellationRating
7.8
1,510 reviews
Search KLM 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 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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