SFO - SOU

$297 Find Cheap Flights from San Francisco to Southampton

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Southampton departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Southampton

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Southampton, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Southampton, as well as popular online travel agencies
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Flight Deals

Cheap Flights from San Francisco to Southampton (SFO-SOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Southampton that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Southampton

Sun, Feb 8 - Thu, Feb 19
Delta Logo
1:55 pm - 5:00 pmSFO-SOU
19h 05m1 stop
Delta Logo
5:30 pm - 11:50 amSOU-SFO
26h 20m1 stop
$922Delta
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Thu, Sep 4 - Sun, Sep 14
KLM Logo
7:05 am - 8:45 amSFO-SOU
17h 40m2 stops
KLM Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$923KLM
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Thu, Sep 4 - Mon, Sep 8
Delta Logo
1:45 pm - 8:45 amSFO-SOU
35h 00m1 stop
Delta Logo
5:35 pm - 11:45 amSOU-SFO
26h 10m1 stop
$924Delta
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Thu, Sep 4 - Sun, Sep 14
Delta Logo
11:35 am - 5:00 pmSFO-SOU
21h 25m2 stops
Delta Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$926Delta
Find Deal
Sun, Feb 8 - Sat, Feb 21
Delta Logo
2:00 pm - 5:00 pmSFO-SOU
19h 00m2 stops
Delta Logo
5:30 pm - 11:50 amSOU-SFO
26h 20m1 stop
$927Delta
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Tue, Sep 2 - Wed, Sep 10
Delta Logo
10:50 pm - 8:45 amSFO-SOU
25h 55m2 stops
Delta Logo
9:20 am - 11:45 amSOU-SFO
34h 25m1 stop
$928Delta
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Thu, Sep 4 - Sun, Sep 14
Aer Lingus Logo
5:40 pm - 7:30 pmSFO-SOU
17h 50m1 stop
Aer Lingus Logo
8:00 pm - 3:55 pmSOU-SFO
27h 55m1 stop
$931Aer Lingus
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Thu, Sep 4 - Sun, Sep 14
Virgin Atlantic Logo
1:45 pm - 8:45 amSFO-SOU
35h 00m1 stop
Virgin Atlantic Logo
9:20 am - 11:45 amSOU-SFO
34h 25m1 stop
$969Virgin Atlantic
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Thu, Sep 4 - Sun, Sep 14
KLM Logo
1:45 pm - 8:45 amSFO-SOU
35h 00m1 stop
KLM Logo
6:25 pm - 11:45 amSOU-SFO
25h 20m1 stop
$990KLM
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Fri, Sep 12 - Sat, Sep 27
Aer Lingus Logo
6:00 am - 8:40 amSFO-SOU
18h 40m2 stops
Aer Lingus Logo
9:40 am - 3:55 pmSOU-SFO
14h 15m1 stop
$1,061Aer Lingus
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Booking Insights

KAYAK's insights & trends for San Francisco to Southampton flights

Get data-powered insights and trends into flights from San Francisco to Southampton to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from San Francisco to Southampton?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Francisco to Southampton were found on Delta ($922) and KLM ($923).

Good to know

Cheapest flight$297
Flight from San Francisco to Southampton

When to book flights from San Francisco to Southampton

Are your dates flexible? Find out the best times to travel from San Francisco to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Southampton

  • What is the cheapest flight from San Francisco to Southampton?

    In the last 3 days, the lowest price for a flight from San Francisco to Southampton was $297 for a one-way ticket and $922 for a round-trip.

  • Do I need a passport to fly between San Francisco and Southampton?

    Yes

  • Which airports will I be using when flying from San Francisco to Southampton?

    San Francisco and Southampton are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at Southampton Eastleigh.

  • Which aircraft models fly most regularly from San Francisco to Southampton?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Southampton?

    SkyTeam is the only airline alliance operating flights between San Francisco and Southampton.

  • Which is the best airline for flights from San Francisco to Southampton, KLM or Aer Lingus?

    The two airlines most popular with KAYAK users for flights from San Francisco to Southampton are KLM and Aer Lingus. With an average price for the route of $918 and an overall rating of 7.8, KLM is the most popular choice. Aer Lingus is also a great choice for the route, with an average price of $1,250 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from San Francisco to Southampton?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Southampton.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Southampton?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southampton from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Southampton?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Southampton with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and SOU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Southampton?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Southampton from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Francisco to Southampton

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Southampton. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Southampton? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1384 reviews
8.4Crew
7.1Entertainment
7.7Comfort
7.3Food
7.8Boarding
Airline reviews

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

2.0 MediocreIlja, Aug 2025AGP - AMS
Read more KLM reviews

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

I was very disappointed that the online sys allowed me to get the boarding pass for the second leg of the trip, when I clearly request it for both flights!

It was my first transatlantic flight with Aer Lingus. Very enjoyable. Thank you for making international travel enjoyable again.

Excellent as far as the flight is concerned. Faro airport passport check was a huge delay and worrisome re missing the flight. 45 minutes there through passport control

The seat pitch was a little tight for me, but I survived. There was a volatile, enraged passenger a couple of rows ahead of me and the cabin crew defused and resolved the situation calmly, quickly, and successfully.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

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

Information on your arrival and departure airports

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