In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

How far in advance should I book a flight from Southampton to San Francisco?

Users have found that booking a flight from Southampton to San Francisco at least 52 days early can save you up to 22% on average compared to booking a flight this week. If booking 52 days before your flight isn’t an option for you, users have found flights from Southampton to San Francisco for as little as $609 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $773 for flights departing within the next 3 days.

What is the cheapest month to fly from Southampton to San Francisco?

Flights from Southampton to San Francisco lean towards being more expensive in July. Prices are generally better when you fly from Southampton to San Francisco in February, with the cheapest ticket starting at $454.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Southampton to San Francisco as you normally would.

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 vacation 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.

$706+ Flights from Southampton to San Francisco

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Cheap flight deals from Southampton to San Francisco

Round-trip from	$706 (Aer Lingus)
Popular in	July
Cheapest in	February
Average price	$829

From Southampton Eastleigh to San Francisco

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($122 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Southampton to San Francisco

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 August 14, 2025.

Sat 9/279:40 amSOU - SFO

1 stop14h 15mAer Lingus

Sat 10/45:40 pmSFO - SOU

1 stop17h 50mAer Lingus

Deal found 8/13

$706

Sat 9/279:20 amSOU - SFO

1 stop34h 25mKLM

Sat 10/41:45 pmSFO - SOU

1 stop35h 00mKLM

Deal found 8/12

$851

Sat 9/276:05 pmSOU - SFO

1 stop25h 40mDelta

Sat 10/48:55 amSFO - SOU

2 stops24h 55mDelta

Deal found 8/12

$854

Sun 10/196:25 pmSOU - SFO

1 stop25h 20mDelta

Mon 10/276:10 amSFO - SOU

2 stops19h 00mDelta

Deal found 8/12

$868

Sun 10/199:20 amSOU - SFO

2 stops18h 34mDelta

Sun 10/262:55 pmSFO - SOU

1 stop19h 30mDelta

Deal found 8/12

$954

Sun 10/199:20 amSOU - SFO

2 stops18h 34mDelta

Sat 10/255:55 amSFO - SOU

2 stops19h 55mDelta

Deal found 8/12

$972

Mon 10/207:40 pmSOU - SFO

2 stops26h 10mBritish Airways

Mon 10/276:30 pmSFO - SOU

2 stops17h 55mBritish Airways

Deal found 8/12

$992

Best flights from Southampton to San Francisco
Discover carefully curated flight deals from Southampton to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Sat 9/279:40 amSOU - SFO

1 stop14h 15mAer Lingus

Sat 10/45:40 pmSFO - SOU

1 stop17h 50mAer Lingus

Deal found 8/13

$706

Sat 9/279:20 amSOU - SFO

1 stop34h 25mKLM

Sat 10/41:45 pmSFO - SOU

1 stop35h 00mKLM

Deal found 8/12

$851

Sat 9/276:05 pmSOU - SFO

1 stop25h 40mDelta

Sat 10/48:55 amSFO - SOU

2 stops24h 55mDelta

Deal found 8/12

$854

Mon 10/205:35 pmSOU - SFO

1 stop26h 10mDelta

Mon 10/275:55 amSFO - SOU

2 stops19h 15mDelta

Deal found 8/12

$868

Sun 10/196:25 pmSOU - SFO

1 stop25h 20mDelta

Mon 10/276:10 amSFO - SOU

2 stops19h 00mDelta

Deal found 8/12

$868

Sun 10/199:20 amSOU - SFO

2 stops18h 34mDelta

Sun 10/262:55 pmSFO - SOU

1 stop19h 30mDelta

Deal found 8/12

$954

Last-minute flights from Southampton to San Francisco
Discover last-minute flight deals from Southampton to San Francisco. Data last updated August 14, 2025 and is based on user searches.

Tue 8/198:30 amSOU - SFO

2 stops16h 55mBritish Airways

Wed 9/35:40 pmSFO - SOU

1 stop14h 55mBritish Airways

Deal found 8/13

$1,363

Tue 8/197:40 pmSOU - SFO

2 stops29h 45mBritish Airways

Sun 8/245:40 pmSFO - SOU

1 stop31h 00mBritish Airways

Deal found 8/12

$1,406

Wed 8/208:00 pmSOU - SFO

1 stop27h 55mBritish Airways

Sun 8/245:40 pmSFO - SOU

1 stop31h 00mBritish Airways

Deal found 8/12

$1,263

Wed 8/208:00 pmSOU - SFO

1 stop27h 55mBritish Airways

Wed 9/35:40 pmSFO - SOU

1 stop17h 50mBritish Airways

Deal found 8/13

$1,394

Thu 8/219:40 amSOU - SFO

1 stop14h 15mBritish Airways

Tue 9/25:40 pmSFO - SOU

1 stop31h 00mBritish Airways

Deal found 8/13

$1,180

Thu 8/216:25 pmSOU - SFO

1 stop25h 20mDelta

Wed 9/37:05 amSFO - SOU

2 stops17h 40mDelta

Deal found 8/13

$1,192

Thu 8/219:20 amSOU - SFO

2 stops18h 31mDelta

Tue 9/210:50 pmSFO - SOU

2 stops25h 55mDelta

Deal found 8/13

$1,198

Fri 8/228:00 pmSOU - SFO

1 stop27h 55mBritish Airways

Tue 9/25:40 pmSFO - SOU

1 stop31h 00mBritish Airways

Deal found 8/13

$1,190

Sat 8/232:00 pmSOU - SFO

2 stops57h 55mBritish Airways

Tue 9/25:40 pmSFO - SOU

1 stop31h 00mBritish Airways

Deal found 8/13

$1,186

Wed 8/277:55 pmSOU - SFO

2 stops25h 55mBritish Airways

Wed 9/35:40 pmSFO - SOU

1 stop17h 50mBritish Airways

Deal found 8/13

$1,165

Sat 9/279:40 amSOU - SFO

1 stop14h 15mAer Lingus

Sat 10/45:40 pmSFO - SOU

1 stop17h 50mAer Lingus

Deal found 8/13

$706

Sat 9/279:20 amSOU - SFO

1 stop34h 25mKLM

Sat 10/41:45 pmSFO - SOU

1 stop35h 00mKLM

Deal found 8/12

$851

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 August 14, 2025.

Sun 8/179:20 amSOU - SFO

1 stop34h 25mDelta

Deal found 8/13

$1,518

Sun 10/129:20 amSOU - SFO

1 stop34h 25mDelta

Deal found 8/13

$1,561

Wed 8/209:20 amSOU - SFO

1 stop34h 25mDelta

Deal found 8/13

$1,575

Thu 8/219:20 amSOU - SFO

2 stops23h 15mDelta

Deal found 8/13

$1,580

Sun 10/127:55 pmSOU - SFO

2 stops25h 55mBritish Airways

Deal found 8/13

$1,748

Fri 8/299:40 amSOU - SFO

1 stop14h 10mBritish Airways

Deal found 8/12

$2,812

Tue 8/199:10 amSOU - SFO

1 stop14h 45mBritish Airways

Deal found 8/12

$2,814

Mon 8/187:55 pmSOU - SFO

2 stops29h 30mBritish Airways

Deal found 8/12

$2,834

Thu 9/49:40 amSOU - SFO

1 stop14h 15mBritish Airways

Deal found 8/14

$2,835

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

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sat 9/27

9:40 am-3:55 pm

1 stop14h 15m

San Francisco

Sat 10/4

5:40 pm-7:30 pm

1 stop17h 50m

$706

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sat 9/27

9:20 am-11:45 am

1 stop34h 25m

San Francisco

Sat 10/4

1:45 pm-8:45 am

1 stop35h 00m

$851

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sat 9/27

6:05 pm-11:45 am

1 stop25h 40m

San Francisco

Sat 10/4

8:55 am-5:50 pm

2 stops24h 55m

$854

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 10/20

5:35 pm-11:45 am

1 stop26h 10m

San Francisco

Mon 10/27

5:55 am-8:10 am

2 stops19h 15m

$868

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sun 10/19

6:25 pm-11:45 am

1 stop25h 20m

San Francisco

Mon 10/27

6:10 am-8:10 am

2 stops19h 00m

$868

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sun 10/19

9:20 am-7:54 pm

2 stops18h 34m

San Francisco

Sun 10/26

2:55 pm-5:25 pm

1 stop19h 30m

$954

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sun 9/7

9:20 am-11:45 am

1 stop34h 25m

$1,518

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Tue 9/2

5:35 pm-11:45 am

1 stop26h 10m

$1,518

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 9/1

9:20 am-11:45 am

1 stop34h 25m

$1,518

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Tue 8/19

6:25 pm-11:45 am

1 stop25h 20m

$1,518

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 14 results

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.

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 Southampton to San Francisco

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

Currently, January is the cheapest month in which you can book a flight from Southampton to San Francisco (average of $276). Flying from Southampton to San Francisco in June is currently the most expensive (average of $358). 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

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 vacation 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.
What is the cheapest month to book a flight from Southampton to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Southampton to San Francisco (average of $276). Flying from Southampton to San Francisco in June is currently the most expensive (average of $358). 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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Santa Cruz

Livermore

South San Francisco

Mountain View

Turlock

Santa Clara

Hollister

Antioch

Watsonville

Manteca

Sunnyvale

Newark

Milpitas

Campbell

Foster City

San Leandro

Burlingame

Redwood City

Vallejo

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$706+ Cheap flights from Southampton (SOU) to San Francisco (SFO)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Southampton to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Southampton to San Francisco

Round-trip from

Popular in

Cheapest in

Average price

Find 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 August 14, 2025.

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 August 14, 2025.

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.

Cheapflights Insights

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

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

Related info for your journey

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

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?

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

Traveling to a place near San Francisco?

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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 August 14, 2025.