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Cheap flights from London to San Antonio from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Antonio departing on 4/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:00 pm - 1:17 pm
LGW
-
SAT
29h 17m
1 stop
Multiple Airlines Logo
2:12 pm - 10:00 am
SAT
-
LGW
13h 48m
1 stop
$793Multiple Airlines
Wed, Apr 29 - Wed, May 6
Multiple Airlines Logo
6:00 am - 9:18 pm
LHR
-
SAT
21h 18m
2 stops
Multiple Airlines Logo
7:08 pm - 2:25 pm
SAT
-
LHR
13h 17m
1 stop
$820Multiple Airlines
Wed, May 13 - Mon, Aug 3
Multiple Airlines Logo
2:00 pm - 12:27 pm
LGW
-
SAT
28h 27m
1 stop
Multiple Airlines Logo
2:12 pm - 10:00 am
SAT
-
LGW
13h 48m
1 stop
$823Multiple Airlines
Mon, Apr 13 - Mon, Apr 27
Scandinavian Airlines Logo
5:00 pm - 12:15 am
LHR
-
SAT
37h 15m
2 stops
Scandinavian Airlines Logo
12:10 pm - 5:40 pm
SAT
-
LHR
23h 30m
2 stops
$891Scandinavian Airlines
Wed, Sep 2 - Sun, Sep 6
Scandinavian Airlines Logo
7:30 pm - 12:15 am
LHR
-
SAT
34h 45m
2 stops
Scandinavian Airlines Logo
12:10 pm - 5:40 pm
SAT
-
LHR
23h 30m
2 stops
$895Scandinavian Airlines
Wed, Sep 2 - Sun, Sep 6
British Airways Logo
4:25 pm - 11:56 pm
LHR
-
SAT
13h 31m
1 stop
British Airways Logo
5:47 pm - 12:50 pm
SAT
-
LHR
13h 03m
1 stop
$1,043British Airways
Wed, May 13 - Mon, Aug 3
Lufthansa Logo
9:15 am - 8:40 pm
LCY
-
SAT
17h 25m
2 stops
Lufthansa Logo
5:34 pm - 5:55 pm
SAT
-
LCY
18h 21m
2 stops
$1,171Lufthansa
Wed, Apr 29 - Wed, May 6
Lufthansa Logo
9:15 am - 8:40 pm
LCY
-
SAT
17h 25m
2 stops
Lufthansa Logo
7:00 am - 5:55 pm
SAT
-
LCY
28h 55m
2 stops
$1,209Lufthansa
Thu, Apr 23 - Thu, Apr 30
KLM Logo
10:00 am - 12:38 am
LCY
-
SAT
20h 38m
2 stops
KLM Logo
5:00 pm - 4:40 pm
SAT
-
LCY
17h 40m
2 stops
$1,397KLM
Tue, Mar 31 - Wed, Apr 15
KLM Logo
8:45 pm - 3:49 pm
LCY
-
SAT
25h 04m
2 stops
KLM Logo
6:12 pm - 7:55 am
SAT
-
LCY
31h 43m
2 stops
$1,401KLM
Sun, Apr 26 - Sun, May 3

United Airlines flights from London to San Antonio

Our best United Airlines deals on London to San Antonio flight tickets
United Airlines
Apr 28
LHR7:25 amLondon Heathrow
18h 23m
2 stops
SAT7:48 pmSan Antonio
May 5
SAT11:45 amSan Antonio
15h 35m
2 stops
LHR9:20 amLondon Heathrow
$1,144
United Airlines
Apr 30
LHR7:25 amLondon Heathrow
18h 15m
2 stops
SAT7:40 pmSan Antonio
May 7
SAT11:45 amSan Antonio
14h 45m
2 stops
LHR8:30 amLondon Heathrow
$1,179
United Airlines
Apr 26
LHR7:25 amLondon Heathrow
19h 38m
2 stops
SAT9:03 pmSan Antonio
May 3
SAT12:09 pmSan Antonio
15h 11m
2 stops
LHR9:20 amLondon Heathrow
$1,210

Lufthansa flights from London to San Antonio

Our best Lufthansa deals on London to San Antonio flight tickets
Lufthansa
Apr 12
LHR7:30 pmLondon Heathrow
31h 33m
2 stops
SAT9:03 pmSan Antonio
Apr 29
SAT12:15 pmSan Antonio
13h 00m
1 stop
LHR7:15 amLondon Heathrow
$1,108
Lufthansa
Apr 13
LHR11:25 amLondon Heathrow
15h 17m
1 stop
SAT8:42 pmSan Antonio
Apr 27
SAT9:40 amSan Antonio
15h 05m
2 stops
LHR6:45 amLondon Heathrow
$1,119
Lufthansa
Apr 13
LHR1:40 pmLondon Heathrow
15h 19m
1 stop
SAT10:59 pmSan Antonio
May 4
SAT8:48 amSan Antonio
16h 07m
2 stops
LHR6:55 amLondon Heathrow
$1,123

momondo Fare Finder

 
Customize your flight search to find flights from London to San Antonio 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 March 17, 2026.
Use the filters below to find and compare flights from London to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSan Antonio

LGW - SAT

LGWSAT

London Gatwick

Wed 4/29

2:00 pm-1:17 pm

1 stop29h 17m

San Antonio

Wed 5/6

2:12 pm-10:00 am

1 stop13h 48m

$793

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 5/13

6:00 am-9:18 pm

2 stops21h 18m

San Antonio

Mon 8/3

7:08 pm-2:25 pm

1 stop13h 17m

$820

LondonSan Antonio

LGW - SAT

LGWSAT

London Gatwick

Mon 4/13

2:00 pm-12:27 pm

1 stop28h 27m

San Antonio

Mon 4/27

2:12 pm-10:00 am

1 stop13h 48m

$823

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 9/2

5:00 pm-12:15 am

2 stops37h 15m

San Antonio

Sun 9/6

12:10 pm-5:40 pm

2 stops23h 30m

$891

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 9/2

7:30 pm-12:15 am

2 stops34h 45m

San Antonio

Sun 9/6

12:10 pm-5:40 pm

2 stops23h 30m

$895
Quickest round-trip

LondonSan Antonio

LHR - SAT

LHRSAT

London Heathrow

Wed 5/13

4:25 pm-11:56 pm

1 stop13h 31m

San Antonio

Mon 8/3

5:47 pm-12:50 pm

1 stop13h 03m

$1,043

LondonSan Antonio

LCY - SAT

LCYSAT

London City

Wed 4/29

9:15 am-8:40 pm

2 stops17h 25m

San Antonio

Wed 5/6

5:34 pm-5:55 pm

2 stops18h 21m

$1,171

LondonSan Antonio

LCY - SAT

LCYSAT

London City

Thu 4/23

9:15 am-8:40 pm

2 stops17h 25m

San Antonio

Thu 4/30

7:00 am-5:55 pm

2 stops28h 55m

$1,209

LondonSan Antonio

LCY - SAT

LCYSAT

London City

Tue 3/31

10:00 am-12:38 am

2 stops20h 38m

San Antonio

Wed 4/15

5:00 pm-4:40 pm

2 stops17h 40m

$1,397

LondonSan Antonio

LCY - SAT

LCYSAT

London City

Sun 4/26

8:45 pm-3:49 pm

2 stops25h 04m

San Antonio

Sun 5/3

6:12 pm-7:55 am

2 stops31h 43m

$1,401

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

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

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 typical price of a round-trip flight between London and San Antonio?

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of February, then book flights to San Antonio from London during November instead. Flights to San Antonio in November, while not as cheap as those in February, still average around $949.

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $1,149 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from London for as low as $950 on momondo.

Can stopping save me money on London to San Antonio flights?

You could potentially save up to 1% on your flight if you consider stops on a London to San Antonio flight.

How have London to San Antonio flight prices changed over time?

As of March 2026, prices for London to San Antonio flights are approximately 38% cheaper when compared to flights at the same time last year.

When to book flights from London to San Antonio

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

Cheap London to San Antonio (LON to SAT) flight deals and tips

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

Fastest flight time

13h 23m

Direct flights

None
The fastest flight from London to San Antonio takes 13h 23m
There are no direct flights from London to San Antonio. There are no popular flight routes from London to San Antonio.
Search flight deals

  • How far is London to San Antonio by plane?

    A flight from London to San Antonio will travel around 4985.7 mi. By plane, this route typically takes 13h 23m.

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

    Prices for flights from London to San Antonio Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to San Antonio Airport?

  • How old do you have to be to fly from London to San Antonio 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 London to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The travel and health documents you'll need for your trip to San Antonio Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Antonio Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from London to San Antonio

Compare and see reviews for airlines that fly from London to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $1,045Free CancellationRating
6.7
7,797 reviews
Search British Airways flights

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Pleasanton
Schertz

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to San Antonio. momondo saves you time and could save you money on your trip.

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

All flight searches from London to San Antonio on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

Yes. momondo can track prices for London to San Antonio flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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