In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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

When flying from Southampton to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

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

£908+ Cheap Flights from Southampton to San Diego

Cheap flight deals from Southampton to San Diego

Enter your travel dates to find the best prices.

One-way

One-way flights from Southampton to San Diego
Search for one-way flight options from Southampton to San Diego. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Thu 22/1019:55 -

2 stops27h 00m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 8/9£908

Thu 24/919:55 -

2 stops27h 00m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 9/9£1,606

Find flight deals from Southampton to San Diego

Popular in	July
Cheapest in	January
Average price	£615

Highest demand for flights based on searches. 16% potential increase in price (£101 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Use the filters below to find and compare flights from Southampton to San Diego that are best for you.

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Route

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Price

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SouthamptonSan Diego

SOU Southampton Eastleigh - SAN San Diego

SOUSAN

Southampton Eastleigh

Thu 22/10

19:55-14:55

2 stops27h 00m

San Diego

Wed 31/12

00:00-09:00

Nonstop0h 00m

£908

SouthamptonSan Diego

SOU Southampton Eastleigh - SAN San Diego

SOUSAN

Southampton Eastleigh

Thu 24/9

19:55-14:55

2 stops27h 00m

San Diego

Wed 31/12

00:00-09:00

Nonstop0h 00m

£1,606

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Sorted by cheapest first

Best time to book a flight from Southampton to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Southampton with our price prediction graph.

SOU-SAN

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.

Related info for your journey

Can I find deals for flights from Southampton to San Diego that include hotel bookings?
Yes. In addition to deals on Southampton to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to San Diego?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to San Diego.
Can I find deals for business class flights from Southampton to San Diego?
Yes. Cheapflights offers flight deals from Southampton to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Coronado

Browse thousands of different options on Cheapflights for your next trip

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Southampton to San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Southampton to San Diego for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to San Diego from Southampton shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Southampton to San Diego from £908

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to San Diego

One-way flights from Southampton to San DiegoSearch for one-way flight options from Southampton to San Diego. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Search for one-way flight options from Southampton to San Diego. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Find flight deals from Southampton to San Diego

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to San Diego that are best for you.

Best time to book a flight from Southampton to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Southampton with our price prediction graph.

Related info for your journey

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

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

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

Travelling to a place near San Diego?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to San Diego by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to California

Book a non-stop flight to one of these other cities located in California.

Search flights from Southampton to San Diego by cabin class

Find flights from Southampton to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Southampton and San Diego flights

Browse other Southampton and San Diego flight options. Last updated on 9 September 2026.

Other flights from Southampton

Browse through other flights departing from Southampton. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.

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Other flights to San Diego

Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.

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

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

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

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

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One-way flights from Southampton to San Diego
Search for one-way flight options from Southampton to San Diego. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.