How long is the flight from Southampton to San Francisco?

British Airways, KLM, and Delta can get you from Southampton to San Francisco in just under 22h 53m. Your travel time can differ by up to 34h 28m. Southampton and San Francisco are separated by a distance of 5349 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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

When flying from Southampton to San Francisco, 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 Francisco that include hotel bookings?

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

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

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

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

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

£435+ Cheap Flights from Southampton to San Francisco

Cheap flight deals from Southampton to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Southampton to San Francisco
Explore the most affordable flight options available from Southampton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Mon 26/1009:20 -

1 stop14h 15m

Mon 2/1117:20 -

1 stop18h 10m

Deal found 11/9£464

Wed 21/1009:20 -

1 stop14h 35m

Wed 28/1018:20 -

1 stop18h 10m

Deal found 8/9£483

Mon 5/1009:20 -

1 stop14h 30m

Wed 21/1017:40 -

1 stop15h 10m

Deal found 10/9£485

Mon 2/1109:20 -

1 stop14h 15m

Sun 15/1117:20 -

1 stop18h 10m

Deal found 10/9£514

Tue 6/1009:15 -

1 stop14h 40m

Mon 19/1017:35 -

1 stop17h 55m

Deal found 10/9£516

Thu 22/1009:05 -

1 stop34h 40m

Thu 29/1014:50 -

1 stop19h 15m

Deal found 9/9£519

Mon 2/1109:20 -

1 stop14h 15m

Sat 14/1117:20 -

1 stop31h 30m

Deal found 10/9£521

Mon 5/1009:20 -

1 stop14h 30m

Sat 24/1017:40 -

1 stop32h 10m

Deal found 10/9£522

Thu 17/920:00 -

1 stop27h 50m

Fri 25/917:35 -

1 stop15h 15m

Deal found 8/9£525

Sun 4/1017:20 -

1 stop30h 30m

Tue 20/1017:40 -

1 stop17h 50m

Deal found 10/9£526

Thu 5/1120:00 -

1 stop27h 35m

Fri 13/1117:20 -

1 stop31h 25m

Deal found 10/9£528

Sun 4/1020:00 -

1 stop27h 50m

Sat 24/1017:40 -

1 stop35h 15m

Deal found 10/9£531

Find flight deals from Southampton to San Francisco

Round-trip from	£464
One-way from	£435
Popular in	December
Cheapest in	February
Average price	£502

British Airways
26/10-2/11
2 total stops
32h 25m total
Southampton to San Francisco

Search Deals

25/10-31/12
3 total stops
48h 15m total
Southampton to San Francisco

Search Deals

High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Sun 25/10

19:30-12:45

3 stops48h 15m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£435

Fastest return journey

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Mon 8/3

09:20-15:35

1 stop14h 15m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£451

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Sun 25/10

09:20-16:35

1 stop14h 15m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£455

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Thu 3/12

20:00-15:35

1 stop27h 35m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£458

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Tue 9/3

09:20-15:35

1 stop14h 15m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£462

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Sun 7/3

11:40-18:45

2 stops39h 05m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£498

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Thu 28/1

20:00-15:35

1 stop27h 35m

San Francisco

Mon 1/2

17:20-11:50

1 stop34h 30m

£527

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Mon 26/10

17:45-20:06

2 stops57h 21m

San Francisco

Mon 2/11

13:50-17:05

1 stop19h 15m

£537

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Thu 22/10

09:05-23:58

2 stops22h 53m

San Francisco

Thu 29/10

09:46-17:05

2 stops24h 19m

£537

SouthamptonSan Francisco

SOU Southampton Eastleigh - SFO San Francisco

SOUSFO

Southampton Eastleigh

Mon 26/10

17:45-22:38

2 stops35h 53m

San Francisco

Mon 2/11

12:08-17:05

2 stops20h 57m

£557

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 16 resultsSorted by cheapest first

Best time to book a flight from Southampton to San Francisco

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

SOU-SFO

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

How long is the flight from Southampton to San Francisco?
British Airways, KLM, and Delta can get you from Southampton to San Francisco in just under 22h 53m. Your travel time can differ by up to 34h 28m. Southampton and San Francisco are separated by a distance of 5349 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Southampton to San Francisco that include hotel bookings?
Yes. In addition to deals on Southampton to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to San Francisco.
Can I find deals for business class flights from Southampton to San Francisco?
Yes. Cheapflights offers flight deals from Southampton to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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

Cheapflights helps you search for flights from Southampton to San Francisco via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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 Southampton to San Francisco.

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

Need flexible booking options for your flight to San Francisco from Southampton? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

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

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Cheap flights from Southampton to San Francisco from £435

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to San Francisco

Cheapest flights from Southampton to San FranciscoExplore the most affordable flight options available from Southampton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Explore the most affordable flight options available from Southampton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from Southampton to San FranciscoDiscover carefully curated flight deals from Southampton to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Discover carefully curated flight deals from Southampton to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from Southampton to San FranciscoDiscover last-minute flight deals from Southampton to San Francisco. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to San Francisco. Data last updated 13 September 2026 and is based on user searches.

One-way flights from Southampton to San FranciscoSearch for one-way flight options from Southampton to San Francisco. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Search for one-way flight options from Southampton to San Francisco. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Find flight deals from Southampton to San Francisco

Round-trip from

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Cheapest in

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Cheapflights Fare Finder

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

Best time to book a flight from Southampton to San Francisco

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

Related info for your journey

How long is the flight from Southampton to San Francisco?

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

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

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

Travelling to a place near San Francisco?

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 Francisco

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Complete your trip

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

Direct flights to California

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Search flights from Southampton to San Francisco by cabin class

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

Southampton and San Francisco flights

Browse other Southampton and San Francisco flight options. Last updated on 13 September 2026.

Other flights from Southampton

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Other flights to San Francisco

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

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

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

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

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Travel Smart

Cheapest flights from Southampton to San Francisco
Explore the most affordable flight options available from Southampton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from Southampton to San Francisco
Discover carefully curated flight deals from Southampton to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from Southampton to San Francisco
Discover last-minute flight deals from Southampton to San Francisco. Data last updated 13 September 2026 and is based on user searches.

One-way flights from Southampton to San Francisco
Search for one-way flight options from Southampton to San Francisco. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.