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Cheap flights from San Antonio to London from £220

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
19 Jul — 26 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Antonio to London

Enter your travel dates to find the best prices.

Cheapest flights from San Antonio to London
Explore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2026.

Mon 10/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Wed 9/914:00
LGW
-
SAT
2 stops26h 12m
Multiple Airlines
Deal found 16/6£548
Mon 10/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Fri 11/914:00
LGW
-
SAT
2 stops48h 45m
Multiple Airlines
Deal found 16/6£552
Mon 10/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Mon 7/914:00
LGW
-
SAT
2 stops36h 11m
Multiple Airlines
Deal found 16/6£555
Sun 6/1212:10
SAT
-
LHR
1 stop16h 40m
United Airlines
Tue 8/1209:30
LHR
-
SAT
2 stops17h 37m
United Airlines
Deal found 15/6£570
Mon 10/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Sun 6/914:00
LGW
-
SAT
2 stops34h 56m
Multiple Airlines
Deal found 16/6£573
Wed 12/819:49
SAT
-
LGW
2 stops32h 11m
Multiple Airlines
Sun 6/914:00
LGW
-
SAT
1 stop24h 56m
Multiple Airlines
Deal found 16/6£587
Mon 10/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Sat 12/914:00
LGW
-
SAT
2 stops51h 48m
Multiple Airlines
Deal found 16/6£591
Sat 15/816:26
SAT
-
LGW
1 stop35h 34m
Multiple Airlines
Wed 9/914:00
LGW
-
SAT
2 stops26h 12m
Multiple Airlines
Deal found 16/6£613
Fri 14/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Wed 9/914:00
LGW
-
SAT
2 stops26h 12m
Multiple Airlines
Deal found 16/6£619
Fri 14/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Fri 11/914:00
LGW
-
SAT
2 stops48h 45m
Multiple Airlines
Deal found 16/6£622
Fri 14/809:51
SAT
-
LGW
1 stop18h 09m
Multiple Airlines
Mon 7/914:00
LGW
-
SAT
2 stops36h 11m
Multiple Airlines
Deal found 16/6£625
Fri 16/1006:00
SAT
-
LHR
1 stop22h 25m
United Airlines
Sun 18/1007:25
LHR
-
SAT
2 stops19h 13m
United Airlines
Deal found 19/6£638

Find flight deals from San Antonio to London

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to London (LON). 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 19 June 2026.

Round-trip from

£548

One-way from

£220

Popular in

June

Cheapest in

September

Average price

£1,130
10/8-9/9
  • 10/8-9/9
  • 3 total stops
  • 44h 21m total
  • San Antonio to London
Search Deals
25/7
  • 25/7
  • 2 total stops
  • 32h 21m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£199 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Antonio to London 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 858,174 searches. Data last updated 19 June 2026.
Use the filters below to find and compare flights from San Antonio to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 6/12

14:15-11:05

2 stops14h 50m

London Heathrow

Tue 8/12

09:30-21:07

2 stops17h 37m

£635

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 1/12

12:50-11:05

1 stop16h 15m

London Heathrow

Wed 9/12

06:35-20:06

2 stops19h 31m

£658

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 27/10

14:00-08:45

2 stops13h 45m

London Heathrow

Wed 4/11

06:30-17:44

2 stops17h 14m

£662

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 10/10

16:17-21:20

2 stops23h 03m

London Heathrow

Wed 14/10

08:30-21:13

1 stop18h 43m

£678

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Tue 27/10

13:25-09:15

2 stops14h 50m

London City

Wed 4/11

09:50-20:44

2 stops16h 54m

£684
Fastest return journey

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 23/8

14:15-07:45

1 stop11h 30m

London Heathrow

Tue 1/9

06:50-16:31

2 stops15h 41m

£703

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Sun 8/11

10:45-09:00

2 stops16h 15m

London Gatwick

Sun 15/11

10:00-22:27

2 stops18h 27m

£705

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 22/8

17:59-07:45

1 stop31h 46m

London Heathrow

Tue 1/9

07:25-20:38

2 stops19h 13m

£708

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Tue 6/10

13:17-17:55

2 stops22h 38m

London City

Mon 12/10

18:30-21:31

2 stops33h 01m

£711

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Sat 10/10

16:25-17:20

2 stops18h 55m

London City

Wed 14/10

08:25-21:32

2 stops19h 07m

£718

Flights are sorted by cheapest return flights first.

Deals found on 15/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from San Antonio to London

Have a flexible travel schedule? Discover the best time to fly to London from San Antonio with our price prediction graph.
Estimated return 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 Antonio to London

What is the cheapest month to book a flight from San Antonio to London?

Currently, August is the cheapest month in which you can book a flight from San Antonio to London (average of £358). Flying from San Antonio to London in June is currently the most expensive (average of £549). 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.

How much does it cost for a return flight from San Antonio to London?

What’s the top stopover airport for flights from San Antonio to London?

Share of one-stop return flights from San Antonio to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Houston (IAH) – chosen by Cheapflights users on 40% of one-stop itineraries from San Antonio to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Antonio to London?

Average return fare for one-stop flights from San Antonio to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Houston (IAH) is the most affordable one-stop option, with an average return flight price of £380.

What’s the fastest stopover option from San Antonio to London?

Shortest average travel time for one-stop one-way flights from San Antonio to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Houston (IAH) have the shortest average one-way travel time for one-stop routes: 11h 20m.

Which airport typically offers the quickest stopover for flights from San Antonio to London?

Average stopover duration for one-stop one-way flights from San Antonio to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Houston (IAH) offer the fastest connection on this route, with an average stopover time of 1h 13m.

How far ahead should I book a flight from San Antonio to London?

The best time to book flights from San Antonio to London is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Antonio to London?

    Most people fly from San Antonio (SAT) if they book a flight from San Antonio to London. On average, San Antonio has 0 outbound flights to London per day from 0 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

  • How long is the flight from San Antonio to London?

    There are many flights that can get you from San Antonio to London in 13h 45m. Fly via United Airlines, Delta, or Lufthansa to get the fastest option. San Antonio and London are separated by a distance of 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from San Antonio to London?

    The most popular flight routes from San Antonio to London are San Antonio - London Heathrow, San Antonio - London Gatwick and San Antonio - London Stansted.

  • Can I find deals for flights from San Antonio to London that include hotel bookings?

    Yes. In addition to deals on San Antonio to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to London?

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

  • Can I find deals for business class flights from San Antonio to London?

    Yes. Cheapflights offers flight deals from San Antonio to London 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 Antonio to London?

    Currently, August is the cheapest month in which you can book a flight from San Antonio to London (average of £358). Flying from San Antonio to London in June is currently the most expensive (average of £549). 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

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