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Cheap flights from San Antonio to London from £158

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 13/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from San Antonio to London

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
08:50 - 08:05SAT  San Antonio-LHR London Heathrow
17h 15m2 stops Toronto Pearson Intl Dublin
Aer Lingus Logo
09:50 - 21:13LHR  London Heathrow-SAT San Antonio
17h 23m2 stops Dublin Toronto Pearson Intl
£529Aer Lingus
Tue, 18 Aug - Fri, 28 Aug
United Airlines Logo
07:28 - 11:50SAT  San Antonio-LHR London Heathrow
22h 22m2 stops San Francisco Vancouver Intl
United Airlines Logo
07:30 - 20:53LHR  London Heathrow-SAT San Antonio
19h 23m2 stops Frankfurt am Main Denver Intl
£557United Airlines
Tue, 3 Nov - Thu, 5 Nov
United Airlines Logo
05:30 - 11:15SAT  San Antonio-LHR London Heathrow
23h 45m3 stops Houston George Bush Intcntl Los Angeles Los Angeles San Francisco
United Airlines Logo
07:30 - 20:53LHR  London Heathrow-SAT San Antonio
19h 23m2 stops Frankfurt am Main Denver Intl
£561United Airlines
Tue, 3 Nov - Thu, 5 Nov
Multiple Airlines Logo
22:41 - 10:00SAT  San Antonio-LGW London Gatwick
53h 19m2 stops Las Vegas Harry Reid Intl Orlando
Multiple Airlines Logo
12:35 - 09:02LGW  London Gatwick-SAT San Antonio
26h 27m1 stop Orlando
£569Multiple Airlines
Thu, 22 Oct - Sun, 1 Nov
Multiple Airlines Logo
12:16 - 09:15SAT  San Antonio-LGW London Gatwick
38h 59m2 stops Denver Intl Orlando
Multiple Airlines Logo
12:35 - 09:02LGW  London Gatwick-SAT San Antonio
26h 27m1 stop Orlando
£579Multiple Airlines
Sat, 24 Oct - Sun, 1 Nov
Multiple Airlines Logo
22:41 - 10:00SAT  San Antonio-LGW London Gatwick
53h 19m2 stops Las Vegas Harry Reid Intl Orlando
Multiple Airlines Logo
11:00 - 09:02LGW  London Gatwick-SAT San Antonio
27h 02m1 stop Orlando
£584Multiple Airlines
Thu, 22 Oct - Thu, 29 Oct
Multiple Airlines Logo
10:34 - 10:00SAT  San Antonio-LGW London Gatwick
17h 26m1 stop Orlando
Multiple Airlines Logo
10:10 - 19:01LGW  London Gatwick-SAT San Antonio
38h 51m2 stops Orlando Denver Intl
£585Multiple Airlines
Fri, 23 Oct - Wed, 4 Nov
Aer Lingus Logo
08:50 - 08:05SAT  San Antonio-LHR London Heathrow
17h 15m2 stops Toronto Pearson Intl Dublin
Aer Lingus Logo
09:50 - 21:13LHR  London Heathrow-SAT San Antonio
17h 23m2 stops Dublin Toronto Pearson Intl
£588Aer Lingus
Thu, 20 Aug - Fri, 28 Aug
Multiple Airlines Logo
12:16 - 10:00SAT  San Antonio-LGW London Gatwick
39h 44m2 stops Denver Intl Orlando
Multiple Airlines Logo
12:35 - 09:02LGW  London Gatwick-SAT San Antonio
26h 27m1 stop Orlando
£588Multiple Airlines
Fri, 23 Oct - Sun, 1 Nov
Multiple Airlines Logo
10:34 - 10:00SAT  San Antonio-LGW London Gatwick
17h 26m1 stop Orlando
Multiple Airlines Logo
10:10 - 10:12LGW  London Gatwick-SAT San Antonio
30h 02m2 stops Orlando Denver Intl
£589Multiple Airlines
Fri, 23 Oct - Tue, 3 Nov

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Delta flights from San Antonio to London

Our best Delta deals on San Antonio to London flight tickets
Delta
2 Nov
SAT11:00San Antonio
18h 40m
1 stop
LHR11:40London Heathrow
10 Nov
LHR10:00London Heathrow
17h 58m
2 stops
SAT21:58San Antonio
£648
Delta
30 Dec
SAT10:45San Antonio
18h 55m
1 stop
LHR11:40London Heathrow
13 Jan
LHR10:00London Heathrow
19h 20m
2 stops
SAT23:20San Antonio
£648
Delta
2 Nov
SAT15:05San Antonio
14h 35m
2 stops
LHR11:40London Heathrow
10 Nov
LHR08:40London Heathrow
18h 46m
2 stops
SAT21:26San Antonio
£651

Iberia flights from San Antonio to London

Our best Iberia deals on San Antonio to London flight tickets
Iberia
2 Dec
SAT15:00San Antonio
13h 00m
1 stop
LHR10:00London Heathrow
9 Dec
LHR19:05London Heathrow
19h 17m
2 stops
SAT08:22San Antonio
£627
Iberia
10 Oct
SAT18:38San Antonio
35h 22m
2 stops
LHR12:00London Heathrow
21 Oct
LHR10:50London Heathrow
18h 07m
2 stops
SAT22:57San Antonio
£644
Iberia
17 Nov
SAT11:22San Antonio
16h 38m
1 stop
LHR10:00London Heathrow
23 Nov
LHR19:40London Heathrow
18h 54m
2 stops
SAT08:34San Antonio
£645

momondo 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, momondo users made 279,928 searches. Data last updated 6 August 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
Fastest return journey

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 18/8

08:50-08:05

2 stops17h 15m

London Heathrow

Fri 28/8

09:50-21:13

2 stops17h 23m

£529

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 3/11

07:28-11:50

2 stops22h 22m

London Heathrow

Thu 5/11

07:30-20:53

2 stops19h 23m

£557

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Tue 3/11

05:30-11:15

3 stops23h 45m

London Heathrow

Thu 5/11

07:30-20:53

2 stops19h 23m

£561

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Thu 22/10

22:41-10:00

2 stops53h 19m

London Gatwick

Sun 1/11

12:35-09:02

1 stop26h 27m

£569

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Sat 24/10

12:16-09:15

2 stops38h 59m

London Gatwick

Sun 1/11

12:35-09:02

1 stop26h 27m

£579

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Thu 22/10

22:41-10:00

2 stops53h 19m

London Gatwick

Thu 29/10

11:00-09:02

1 stop27h 02m

£584

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Fri 23/10

10:34-10:00

1 stop17h 26m

London Gatwick

Wed 4/11

10:10-19:01

2 stops38h 51m

£585

San AntonioLondon

SAT San Antonio - LHR London Heathrow

SATLHR

San Antonio

Thu 20/8

08:50-08:05

2 stops17h 15m

London Heathrow

Fri 28/8

09:50-21:13

2 stops17h 23m

£588

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Fri 23/10

12:16-10:00

2 stops39h 44m

London Gatwick

Sun 1/11

12:35-09:02

1 stop26h 27m

£588

San AntonioLondon

SAT San Antonio - LGW London Gatwick

SATLGW

San Antonio

Fri 23/10

10:34-10:00

1 stop17h 26m

London Gatwick

Tue 3/11

10:10-10:12

2 stops30h 02m

£589

Flights are sorted by cheapest return flights first.

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

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

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 San Antonio and London?

Prices are currently typical for flights on this route.

Typical prices usually range from £404 to £659.
The lowest price recently found on this route was £529.

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in February. Flight prices, which tend to average around £508, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from San Antonio averaging around £512.

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

You are more likely to see cheaper flights to London from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £684 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Antonio for as low as £482 on momondo.

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

You could potentially save up to 43% on your flight if you consider stops on a San Antonio to London flight.

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

When to book flights from San Antonio to London

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

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

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

Fastest flight time

11h 15m

Direct flights

None
The fastest flight from San Antonio to London takes 11h 15m
There are no direct flights from San Antonio to London. There are no popular flight routes from San Antonio to London.
Search flight deals

Frequently asked questions about flying from San Antonio to London

  • How far is San Antonio to London by plane?

    There are 4985.7 mi between San Antonio and London. Typically, this will take 11h 15m by plane in normal conditions.

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

    Prices for flights from San Antonio Airport to London refresh daily.

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

    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 London.

  • What documentation or ID do you need to fly to London?

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Ipswich
Maidstone
Folkestone
Ilford
Hastings
Canterbury
Guildford
Chichester
Hayes
Bedford
Harlow
Colchester
Chelmsford

Why use momondo?

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

It is quick and easy to find San Antonio to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from San Antonio with this policy.

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

Once all potential San Antonio to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of San Antonio to London 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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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport