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Cheap flights from San Diego to Southampton from £568

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SOU
16 Jan — 23 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to Southampton

Enter your travel dates to find the best prices.

Best flights from San Diego to Southampton
Discover carefully curated flight deals from San Diego to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 December 2025.

Thu 29/111:00SAN - SOU
2 stops22h 05mKLM
Thu 5/209:00SOU - SAN
2 stops19h 59mKLM
Deal found 15/12£568
Thu 29/118:00SAN - SOU
3 stops38h 40mBritish Airways
Thu 5/206:50SOU - SAN
2 stops17h 20mBritish Airways
Deal found 15/12£4,023
Wed 11/218:00SAN - SOU
2 stops18h 05mBritish Airways
Sun 15/212:15SOU - SAN
2 stops35h 55mBritish Airways
Deal found 16/12£4,058

Find flight deals from San Diego to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 December 2025.

Round-trip from

£568

Popular in

June

Cheapest in

October

Average price

£761
KLM
  • KLM
  • 29/1-5/2
  • 4 total stops
  • 42h 04m total
  • San Diego to Southampton
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£171 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego 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, Cheapflights users made 858,174 searches. Data last updated 17 December 2025.
Use the filters below to find and compare flights from San Diego to Southampton that are best for you.

Fly from

San Diego

Fly to

Southampton

Route

Depart

Return

Price

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Thu 29/1

11:00-17:05

2 stops22h 05m

Southampton Eastleigh

Thu 5/2

09:00-20:59

2 stops19h 59m

£568

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Thu 29/1

18:00-16:40

3 stops38h 40m

Southampton Eastleigh

Thu 5/2

06:50-16:10

2 stops17h 20m

£4,023

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Wed 11/2

18:00-20:05

2 stops18h 05m

Southampton Eastleigh

Sun 15/2

12:15-16:10

2 stops35h 55m

£4,058

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Tue 19/5

13:40-08:35

1 stop34h 55m

£2,675

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Wed 20/5

07:00-16:50

2 stops25h 50m

£2,678

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Thu 21/5

13:40-16:50

1 stop19h 10m

£2,936

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Best time to book a flight from San Diego to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from San Diego with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Southampton

What is the cheapest month to book a flight from San Diego to Southampton?

Currently, December is the cheapest month in which you can book a flight from San Diego to Southampton (average of £350). Flying from San Diego to Southampton in June is currently the most expensive (average of £619). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Diego to Southampton?

    KLM and British Airways can get you from San Diego to Southampton in just under 22h 05m. Your travel time can differ by up to 16h 35m. San Diego and Southampton are separated by a distance of 5462 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from San Diego to Southampton that include hotel bookings?

    Yes. In addition to deals on San Diego to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Southampton.

  • Can I find deals for business class flights from San Diego to Southampton?

    Yes. Cheapflights offers flight deals from San Diego to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Southampton?

    Currently, December is the cheapest month in which you can book a flight from San Diego to Southampton (average of £350). Flying from San Diego to Southampton in June is currently the most expensive (average of £619). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Diego to Southampton?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southampton from San Diego today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Diego to Southampton?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Diego to Southampton.

Can Cheapflights find flights from San Diego to Southampton with no change fees?

Yes, we can. To see specific flights from San Diego to Southampton with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from San Diego to Southampton become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southampton from San Diego today and book when prices fit your budget.

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