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Cheap flights from San Antonio to London from £475

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to London departing on 19/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
12:55 - 17:05
SAT
-
SOU
22h 10m
2 stops
KLM Logo
09:30 - 11:30
SOU
-
SAT
31h 00m
2 stops
£564KLM
Sun, 1 Mar - Sun, 8 Mar

momondo Fare Finder

 
Customise your flight search to find flights from San Antonio 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, momondo users made 279,928 searches. Data last updated 2 February 2026.
Use the filters below to find and compare flights from San Antonio to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSouthampton

SAT - SOU

SATSOU

San Antonio

Sun 1/3

12:55-17:05

2 stops22h 10m

Southampton Eastleigh

Sun 8/3

09:30-11:30

2 stops31h 00m

£564

San AntonioSouthampton

SAT - SOU

SATSOU

San Antonio

Fri 19/6

12:15-08:45

2 stops38h 30m

£475

San AntonioSouthampton

SAT - SOU

SATSOU

San Antonio

Thu 18/6

16:10-08:45

2 stops58h 35m

£575

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from San Antonio to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from San Antonio to Southampton Eastleigh?

Delta is the most popular carrier operating from San Antonio to Southampton Eastleigh

When to book flights from San Antonio to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Antonio to Southampton (SAT to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Southampton

Fastest flight time

22h 10m

Direct flights

None
The fastest flight from San Antonio to Southampton takes 22h 10m
There are no direct flights from San Antonio to Southampton. There are no popular flight routes from San Antonio to Southampton.
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  • How far is San Antonio to Southampton Eastleigh by plane?

    Southampton Eastleigh is 4952.6 mi away from San Antonio. In terms of flight time, this usually takes a little over 22h 10m.

  • When did momondo last update prices for flights from San Antonio Airport to Southampton Eastleigh Airport?

    Prices for flights from San Antonio Airport to Southampton Eastleigh Airport refresh daily.

  • How old do you have to be to fly from San Antonio Airport to Southampton Eastleigh Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Antonio Airport to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near London?

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Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Southampton?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Antonio to Southampton . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Antonio to Southampton with flexible booking policies on momondo?

Yes. All flights to Southampton from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Antonio to Southampton?

momondo provides multiple filters to help you find the best flight to Southampton from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Antonio to Southampton right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Southampton from San Antonio. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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