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$475+ Cheap flights from San Francisco (SFO) 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOU
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find flight deals from San Francisco to Southampton

Cheapest flights from San Francisco to Southampton
Explore the most affordable flight options available from San Francisco to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/21:55 pmSFO - SOU
1 stop34h 15mDelta
Mon 11/108:40 amSOU - SFO
1 stop35h 10mDelta
Deal found 10/12$761
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:15 amSFO - SOU
2 stops17h 05mDelta
Mon 11/108:40 amSOU - SFO
1 stop35h 10mDelta
Deal found 10/12$766
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:10 amSFO - SOU
2 stops19h 10mDelta
Fri 11/78:40 amSOU - SFO
2 stops20h 00mDelta
Deal found 10/12$776
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/21:55 pmSFO - SOU
1 stop34h 15mDelta
Sun 11/96:05 pmSOU - SFO
1 stop25h 45mDelta
Deal found 10/12$791
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:15 amSFO - SOU
2 stops17h 05mDelta
Sun 11/96:05 pmSOU - SFO
1 stop25h 45mDelta
Deal found 10/12$796
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:55 pmSFO - SOU
1 stop19h 05mDelta
Fri 1/95:30 pmSOU - SFO
2 stops33h 13mDelta
Deal found 10/12$801
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/241:55 pmSFO - SOU
1 stop19h 05mDelta
Mon 12/18:40 amSOU - SFO
1 stop35h 10mDelta
Deal found 10/13$803
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:55 amSFO - SOU
2 stops18h 10mDelta
Tue 12/235:30 pmSOU - SFO
2 stops33h 05mDelta
Deal found 10/13$806
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:55 pmSFO - SOU
1 stop19h 05mDelta
Wed 1/79:25 amSOU - SFO
2 stops21h 49mDelta
Deal found 10/12$813

Cheap flight deals from San Francisco to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$744
(Booking.com)

One-way from

$475
(KLM)

Popular in

June

Cheapest in

September

Average price

$665
Provider with most accurate pricing for San Francisco-Southampton Eastleigh flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Southampton Eastleigh flights.
Search Deals
From San Francisco to Southampton Eastleigh
Search Deals
One-way flight from San Francisco to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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 October 14, 2025.
Use the filters below to find and compare flights from San Francisco to Southampton that are best for you.

Fly from

San Francisco

Fly to

Southampton

Route

Depart

Return

Price

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/4

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Mon 11/10

6:05 pm-11:50 am

1 stop25h 45m

$761

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 11/2

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Mon 11/10

8:40 am-11:50 am

1 stop35h 10m

$761

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 12/2

1:55 pm-8:20 am

1 stop34h 25m

Southampton Eastleigh

Mon 12/15

6:05 pm-11:50 am

1 stop25h 45m

$761

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 11/30

1:55 pm-5:25 pm

1 stop19h 30m

Southampton Eastleigh

Mon 12/15

6:05 pm-11:50 am

1 stop25h 45m

$761

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 12/3

1:55 pm-5:25 pm

1 stop19h 30m

Southampton Eastleigh

Mon 12/15

6:05 pm-11:50 am

1 stop25h 45m

$761

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 12/1

10:30 am-5:00 pm

2 stops22h 30m

Southampton Eastleigh

Mon 12/15

8:40 am-11:50 am

1 stop35h 10m

$766

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 12/3

1:55 pm-5:25 pm

1 stop19h 30m

Southampton Eastleigh

Fri 12/12

8:40 am-6:04 pm

2 stops17h 24m

$771

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 12/2

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Fri 12/12

8:40 am-6:04 pm

2 stops17h 24m

$771

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 2/24

1:55 pm-8:20 am

1 stop34h 25m

$475

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 10/27

2:55 pm-5:00 pm

1 stop19h 05m

$475

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 15 results
1
2

Compare providers for flights from San Francisco 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 Francisco to Southampton in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Francisco-Southampton flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Southampton flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Southampton flights, Cheapflights users trust FlightHub the most. FlightHub 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 Francisco-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 Francisco to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from San Francisco 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 Francisco to Southampton

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

Currently, December is the cheapest month in which you can book a flight from San Francisco to Southampton (average of $472). Flying from San Francisco to Southampton in June is currently the most expensive (average of $807). 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 SFO to SOU?

Find hourly flight availability from San Francisco 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 October 14, 2025.

It’s typically best to fly out from San Francisco to Southampton at noon. Doing so could potentially save you 18% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated October 14, 2025.
Read through reviews of airlines operating flights from San Francisco to Southampton, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,335 reviews

Boarding

7.4

Comfort

7.1

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Aer Lingus
7.2
Good
1,335 reviews
Aer Lingus
7.2
Good
1,335 reviews

Boarding

7.4

Comfort

7.1

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

Related info for your journey

Find useful and relevant information for your journey from San Francisco 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 Francisco to Southampton?

    For as low as $761, Delta can have you in Southampton from San Francisco in 19h 05m. Airlines will cover a distance of 5349 mi.

  • What is the cheapest airline to fly from San Francisco to Southampton round-trip?

    According to our current data, Aer Lingus ($946), offers the cheapest pricing from San Francisco to Southampton.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 Francisco to Southampton?

    Currently, December is the cheapest month in which you can book a flight from San Francisco to Southampton (average of $472). Flying from San Francisco to Southampton in June is currently the most expensive (average of $807). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from San Francisco to Southampton

Discover the top airline that operate flights from San Francisco to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$946Average$1,411FlexibilityNo cancel feeOn-timeN/A

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