$3,586+ Cheap flights from San Diego (SAN) to Southampton (SOU)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SOU
Jan 17 — Jan 241
1 adult, Economy
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Find cheap flights from San Diego to Southampton with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Diego to Southampton
Best flights from San Diego to SouthamptonDiscover 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 18, 2025.
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 18, 2025.
This British Airways deal was found by Cheapflights users on 12/16. 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 stops18h 05mBritish Airways
Sun 2/1512:15 pmSOU - SAN
2 stops35h 55mBritish Airways
Deal found 12/16![British Airways logo]()
$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 18, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $5,440 (British Airways) |
One-way from | $3,586 (Delta) |
Popular in | June |
Cheapest in | October |
Average price | $1,020 |
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 18, 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-8:05 pm
2 stops18h 05m
Southampton Eastleigh
Sun 2/15
12:15 pm-4:10 pm
2 stops35h 55m
$5,440
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Tue 5/19
1:40 pm-8:35 am
1 stop34h 55m
$3,586
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Wed 5/20
7:00 am-4:50 pm
2 stops25h 50m
$3,590
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Thu 5/21
1:40 pm-4:50 pm
1 stop19h 10m
$3,936
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- 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 18, 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.