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$5,440+ Cheap flights from San Diego (SAN) to Southampton (SOU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SOU
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheap flight deals from San Diego to Southampton

Best flights from San Diego to Southampton
Discover carefully curated flight deals from San Diego to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2025.

This British Airways deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:00 pmSAN - SOU
2 stops30h 10mBritish Airways
Sun 2/1512:15 pmSOU - SAN
2 stops35h 55mBritish Airways
Deal found 12/19$5,440
This British Airways deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/306:00 pmSAN - SOU
2 stops32h 05mBritish Airways
Tue 2/33:00 pmSOU - SAN
2 stops33h 10mBritish Airways
Deal found 12/20$5,440

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 December 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$5,440
(British Airways)

Popular in

June

Cheapest in

October

Average price

$1,020
Provider with most accurate pricing for San Diego-Southampton Eastleigh flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Southampton Eastleigh flights.
Search Deals
From San Diego to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($308 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated December 22, 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

Wed 2/11

6:00 pm-8:10 am

2 stops30h 10m

Southampton Eastleigh

Sun 2/15

12:15 pm-4:10 pm

2 stops35h 55m

$5,440

San DiegoSouthampton

SAN - SOU

SANSOU

San Diego

Fri 1/30

6:00 pm-10:05 am

2 stops32h 05m

Southampton Eastleigh

Tue 2/3

3:00 pm-4:10 pm

2 stops33h 10m

$5,440

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Compare providers for flights from San Diego to Southampton

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Southampton in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Southampton flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Southampton flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Southampton flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Southampton flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 $469). Flying from San Diego to Southampton in June is currently the most expensive (average of $830). 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.

What is the cheapest time of day to fly from SAN to SOU?

Find hourly flight availability from San Diego to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 22% on flights from San Diego to Southampton by exploring options for tickets at noon.

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?

    Departing from San Diego to Southampton will take you 30h 10m. There are 5462 mi between San Diego and Southampton.

  • 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 vacation 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 $469). Flying from San Diego to Southampton in June is currently the most expensive (average of $830). 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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