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Cheap flights from San Antonio to London from $495

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 3/5. 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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Find the cheapest flights from San Antonio to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
1:00 pm - 8:50 am
SAT
-
SOU
14h 50m
2 stops
KLM Logo
8:50 am - 10:42 pm
SOU
-
SAT
18h 52m
2 stops
$1,201KLM
Fri, Mar 13 - Fri, Mar 20
Aer Lingus Logo
1:36 pm - 7:40 pm
SAT
-
SOU
49h 04m
3 stops
Aer Lingus Logo
8:10 pm - 11:56 pm
SOU
-
SAT
32h 46m
2 stops
$2,532Aer Lingus
Fri, Mar 13 - Fri, Mar 20

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated January 29, 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

Fri 3/13

1:00 pm-8:50 am

2 stops14h 50m

Southampton Eastleigh

Fri 3/20

8:50 am-10:42 pm

2 stops18h 52m

$1,201

San AntonioSouthampton

SAT - SOU

SATSOU

San Antonio

Fri 3/13

1:36 pm-7:40 pm

3 stops49h 04m

Southampton Eastleigh

Fri 3/20

8:10 pm-11:56 pm

2 stops32h 46m

$2,532

San AntonioSouthampton

SAT - SOU

SATSOU

San Antonio

Thu 3/5

5:25 am-5:00 pm

2 stops29h 35m

$495

Flights are sorted by cheapest round-trip 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

What airlines fly to Southampton?

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to Southampton from San Antonio according to our data. British Airways is the first choice among our users, with 67% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 8 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

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 round-trip 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?

    San Antonio and Southampton Eastleigh are 4952.6 mi apart from one another. Typically, this will take 22h 10m by plane in normal conditions.

  • 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 were last updated today.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

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

Finding the right flight to Southampton from San Antonio is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southampton quick and easy, saving you time and money.

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

Flights from San Antonio to Southampton with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Southampton.

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

Of course. momondo tracks the price of San Antonio to Southampton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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