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Cheap flights from San Antonio to London from $266

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 10/17. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
4:10 pm - 4:00 pmSAT-LHR
41h 50m2 stops
Scandinavian Airlines Logo
6:40 am - 11:33 pmLHR-SAT
22h 53m2 stops
$541Scandinavian Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 17
Scandinavian Airlines Logo
2:10 pm - 4:00 pmSAT-LHR
19h 50m2 stops
Scandinavian Airlines Logo
6:40 am - 11:33 pmLHR-SAT
22h 53m2 stops
$581Scandinavian Airlines
Find Deal
Mon, Jan 19 - Mon, Feb 9
United Airlines Logo
7:07 am - 10:50 amSAT-LHR
21h 43m1 stop
United Airlines Logo
7:40 am - 7:37 pmLHR-SAT
17h 57m2 stops
$669United Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
United Airlines Logo
7:00 am - 5:55 amSAT-LHR
16h 55m1 stop
United Airlines Logo
6:50 am - 8:15 pmLHR-SAT
19h 25m2 stops
$671United Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
British Airways Logo
2:39 pm - 8:15 amSAT-LHR
12h 36m1 stop
British Airways Logo
2:25 pm - 9:48 pmLHR-SAT
13h 23m1 stop
$767British Airways
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Wed, Mar 18 - Fri, Apr 3
Iberia Logo
3:07 pm - 2:05 pmSAT-LCY
16h 58m2 stops
Iberia Logo
7:15 pm - 8:27 amLCY-SAT
19h 12m2 stops
$768Iberia
Find Deal
Wed, Feb 11 - Wed, Feb 18
British Airways Logo
4:39 pm - 8:35 amSAT-LHR
33h 56m1 stop
British Airways Logo
3:00 pm - 9:52 pmLHR-SAT
12h 52m1 stop
$842British Airways
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Fri, Jan 2 - Fri, Jan 16
Iberia Logo
3:07 pm - 2:05 pmSAT-LCY
16h 58m2 stops
Iberia Logo
7:50 am - 8:00 pmLCY-SAT
18h 10m2 stops
$856Iberia
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Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
10:04 am - 9:00 amSAT-LGW
16h 56m2 stops
American Airlines Logo
12:30 pm - 3:30 amLGW-SAT
21h 00m2 stops
$1,217American Airlines
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Sat, Dec 27 - Sun, Jan 4
American Airlines Logo
8:21 am - 9:00 amSAT-LGW
18h 39m2 stops
American Airlines Logo
12:30 pm - 9:45 amLGW-SAT
27h 15m2 stops
$1,218American Airlines
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Sat, Dec 27 - Sun, Jan 4

Air Canada flights from San Antonio to London

Our best Air Canada deals on San Antonio to London flight tickets
Air Canada
Feb 12
SAT5:20 pmSan Antonio
31h 50m
2 stops
LHR7:10 amLondon Heathrow
Feb 17
LHR1:25 pmLondon Heathrow
37h 28m
2 stops
SAT8:53 pmSan Antonio
$785
Find similar
Air Canada
Nov 19
SAT7:05 amSan Antonio
17h 25m
2 stops
LHR6:30 amLondon Heathrow
Dec 7
LHR11:10 amLondon Heathrow
17h 50m
2 stops
SAT11:00 pmSan Antonio
$813
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KLM flights from San Antonio to London

Our best KLM deals on San Antonio to London flight tickets
KLM
Jan 15
SAT6:20 pmSan Antonio
11h 20m
1 stop
LHR11:40 amLondon Heathrow
Jan 19
LHR11:45 amLondon Heathrow
16h 34m
2 stops
SAT10:19 pmSan Antonio
$680
Find similar
KLM
Nov 4
SAT12:23 pmSan Antonio
13h 27m
1 stop
LHR7:50 amLondon Heathrow
Nov 20
LHR12:30 pmLondon Heathrow
13h 51m
1 stop
SAT8:21 pmSan Antonio
$691
Find similar
KLM
Nov 4
SAT3:04 pmSan Antonio
11h 56m
1 stop
LHR9:00 amLondon Heathrow
Nov 20
LHR11:05 amLondon Heathrow
16h 14m
1 stop
SAT9:19 pmSan Antonio
$695
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momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 8, 2025.
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

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/14

4:10 pm-4:00 pm

2 stops41h 50m

London Heathrow

Sat 1/17

6:40 am-11:33 pm

2 stops22h 53m

$541

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 1/19

2:10 pm-4:00 pm

2 stops19h 50m

London Heathrow

Mon 2/9

6:40 am-11:33 pm

2 stops22h 53m

$581

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 11/3

7:07 am-10:50 am

1 stop21h 43m

London Heathrow

Mon 11/10

7:40 am-7:37 pm

2 stops17h 57m

$669

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 12/5

7:00 am-5:55 am

1 stop16h 55m

London Heathrow

Tue 12/9

6:50 am-8:15 pm

2 stops19h 25m

$671

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

2:39 pm-8:15 am

1 stop12h 36m

London Heathrow

Fri 4/3

2:25 pm-9:48 pm

1 stop13h 23m

$767

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 2/11

3:07 pm-2:05 pm

2 stops16h 58m

London City

Wed 2/18

7:15 pm-8:27 am

2 stops19h 12m

$768

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 1/2

4:39 pm-8:35 am

1 stop33h 56m

London Heathrow

Fri 1/16

3:00 pm-9:52 pm

1 stop12h 52m

$842

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 2/11

3:07 pm-2:05 pm

2 stops16h 58m

London City

Wed 2/18

7:50 am-8:00 pm

2 stops18h 10m

$856

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Sat 12/27

10:04 am-9:00 am

2 stops16h 56m

London Gatwick

Sun 1/4

12:30 pm-3:30 am

2 stops21h 00m

$1,217

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Sat 12/27

8:21 am-9:00 am

2 stops18h 39m

London Gatwick

Sun 1/4

12:30 pm-9:45 am

2 stops27h 15m

$1,218

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 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?

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in August. Flight prices, which tend to average around $724, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from San Antonio averaging around $735.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from San Antonio to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $835. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,031. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $861 when looking at flights departing in the evening. Flights to London are more costly in the morning, with an average ticket price of $1,021. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $967 when searching weeks out. 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 $756 on momondo.

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

You could potentially save up to 24% 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?

As of October 2025, prices for San Antonio to London flights are approximately 16% cheaper when compared to flights at the same time last year.

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 round-trip 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

Direct flights

None
There are no direct flights from San Antonio to London. There are no popular flight routes from San Antonio to London.
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  • How far is San Antonio to London by plane?

    London is 4985.7 mi away from San Antonio. In terms of flight time, this usually takes a little over 11h 20m.

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

  • 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 required travel and health documents for your London 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 London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from San Antonio to London?

Best airlines flying from San Antonio to London

Compare and see reviews for airlines that fly from San Antonio to London with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $530Free CancellationRating
7.9
7,968 reviews
Search Delta flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
8,965 reviews
Search United Airlines flights
British AirwaysPriceFrom $568Free CancellationRating
6.7
7,444 reviews
Search British Airways flights
American AirlinesPriceFrom $571Free CancellationRating
7.2
11,041 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $645Free CancellationRating
7.4
665 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $672Free CancellationRating
7.0
2,980 reviews
Search Iberia flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Dartford
Hayes
Crawley
Chelmsford
Brentwood
Colchester
Ilford
Folkestone
Romford
Cobham
Stansted
Watford
Richmond

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?

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from San Antonio.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Antonio and alert you when they change.

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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