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Cheap flights from San Antonio to London from $247

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 4/12. 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.
Multiple Airlines Logo
6:30 am - 10:00 am
SAT
-
LGW
21h 30m1 stop
Multiple Airlines Logo
2:00 pm - 11:52 pm
LGW
-
SAT
15h 52m1 stop
$532Multiple Airlines
Fri, Jan 16 - Fri, Jan 23
Multiple Airlines Logo
6:30 am - 10:00 am
SAT
-
LGW
21h 30m1 stop
Multiple Airlines Logo
2:00 pm - 9:40 am
LGW
-
SAT
49h 40m2 stops
$566Multiple Airlines
Fri, Jan 16 - Fri, Jan 23
Delta Logo
12:25 pm - 6:50 am
SAT
-
LHR
12h 25m1 stop
Delta Logo
6:30 am - 8:25 pm
LHR
-
SAT
19h 55m2 stops
$629Delta
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
2:05 pm - 7:55 am
SAT
-
LHR
11h 50m1 stop
United Airlines Logo
10:00 am - 5:31 pm
LHR
-
SAT
13h 31m1 stop
$725United Airlines
Wed, Jan 7 - Wed, Jan 14
American Airlines Logo
7:00 am - 7:30 am
SAT
-
LGW
18h 30m2 stops
American Airlines Logo
11:20 am - 11:58 pm
LGW
-
SAT
18h 38m2 stops
$739American Airlines
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
8:10 am - 7:30 am
SAT
-
LGW
17h 20m2 stops
American Airlines Logo
11:20 am - 11:58 pm
LGW
-
SAT
18h 38m2 stops
$785American Airlines
Thu, Jan 15 - Thu, Jan 22
British Airways Logo
1:40 pm - 2:05 pm
SAT
-
LCY
18h 25m2 stops
British Airways Logo
7:50 am - 8:54 pm
LCY
-
SAT
19h 04m2 stops
$876British Airways
Tue, Feb 17 - Thu, Feb 26
British Airways Logo
10:14 am - 8:50 am
SAT
-
LCY
17h 36m2 stops
British Airways Logo
7:15 pm - 10:31 pm
LCY
-
SAT
32h 16m2 stops
$936British Airways
Wed, Mar 11 - Sun, Mar 15
Iberia Logo
1:33 pm - 7:00 pm
SAT
-
LGW
24h 27m2 stops
Iberia Logo
11:45 am - 11:53 pm
LGW
-
SAT
41h 08m2 stops
$1,008Iberia
Wed, Mar 11 - Sun, Mar 15
Iberia Logo
11:36 am - 8:50 am
SAT
-
LCY
15h 14m2 stops
Iberia Logo
7:50 am - 10:42 pm
LCY
-
SAT
20h 52m2 stops
$1,204Iberia
Tue, Jan 13 - Fri, Jan 16

Lufthansa flights from San Antonio to London

Our best Lufthansa deals on San Antonio to London flight tickets
Lufthansa
Apr 19
SAT4:17 pmSan Antonio
13h 18m
1 stop
LHR11:35 amLondon Heathrow
Apr 30
LHR7:25 amLondon Heathrow
21h 28m
2 stops
SAT10:53 pmSan Antonio
$674
Find similar
Lufthansa
Feb 17
SAT4:12 pmSan Antonio
16h 33m
2 stops
LHR2:45 pmLondon Heathrow
Feb 26
LHR7:40 amLondon Heathrow
18h 48m
2 stops
SAT8:28 pmSan Antonio
$677
Find similar
Lufthansa
Apr 19
SAT4:17 pmSan Antonio
13h 18m
1 stop
LHR11:35 amLondon Heathrow
Apr 30
LHR9:30 amLondon Heathrow
17h 32m
2 stops
SAT9:02 pmSan Antonio
$684
Find similar

Scandinavian Airlines flights from San Antonio to London

Our best Scandinavian Airlines deals on San Antonio to London flight tickets
Scandinavian Airlines
Apr 19
SAT4:10 pmSan Antonio
41h 50m
2 stops
LHR4:00 pmLondon Heathrow
Apr 30
LHR7:30 pmLondon Heathrow
33h 48m
2 stops
SAT11:18 pmSan Antonio
$630
Find similar
Scandinavian Airlines
Jan 24
SAT8:00 amSan Antonio
26h 00m
2 stops
LHR4:00 pmLondon Heathrow
Jan 31
LHR6:40 amLondon Heathrow
23h 58m
2 stops
SAT12:38 amSan Antonio
$631
Find similar
Scandinavian Airlines
Apr 19
SAT4:10 pmSan Antonio
19h 30m
2 stops
LHR5:40 pmLondon Heathrow
Apr 30
LHR6:40 amLondon Heathrow
21h 41m
3 stops
SAT10:21 pmSan Antonio
$774
Find similar

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 December 11, 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 - LGW

SATLGW

San Antonio

Fri 1/16

6:30 am-10:00 am

1 stop21h 30m

London Gatwick

Fri 1/23

2:00 pm-11:52 pm

1 stop15h 52m

$532

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Fri 1/16

6:30 am-10:00 am

1 stop21h 30m

London Gatwick

Fri 1/23

2:00 pm-9:40 am

2 stops49h 40m

$566

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 1/15

12:25 pm-6:50 am

1 stop12h 25m

London Heathrow

Thu 1/22

6:30 am-8:25 pm

2 stops19h 55m

$629

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/7

2:05 pm-7:55 am

1 stop11h 50m

London Heathrow

Wed 1/14

10:00 am-5:31 pm

1 stop13h 31m

$725

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Thu 1/15

7:00 am-7:30 am

2 stops18h 30m

London Gatwick

Thu 1/22

11:20 am-11:58 pm

2 stops18h 38m

$739

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Thu 1/15

8:10 am-7:30 am

2 stops17h 20m

London Gatwick

Thu 1/22

11:20 am-11:58 pm

2 stops18h 38m

$785

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Tue 2/17

1:40 pm-2:05 pm

2 stops18h 25m

London City

Thu 2/26

7:50 am-8:54 pm

2 stops19h 04m

$876

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 3/11

10:14 am-8:50 am

2 stops17h 36m

London City

Sun 3/15

7:15 pm-10:31 pm

2 stops32h 16m

$936

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Wed 3/11

1:33 pm-7:00 pm

2 stops24h 27m

London Gatwick

Sun 3/15

11:45 am-11:53 pm

2 stops41h 08m

$1,008

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Tue 1/13

11:36 am-8:50 am

2 stops15h 14m

London City

Fri 1/16

7:50 am-10:42 pm

2 stops20h 52m

$1,204

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 cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in September. Flight prices, which tend to average around $716, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from San Antonio averaging around $724.

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 $944 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 $681 on momondo.

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

You could potentially save up to 38% 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 December 2025, prices for San Antonio to London flights are approximately 20% more expensive 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

Fastest flight time

11h 40m

Direct flights

None
The fastest flight from San Antonio to London takes 11h 40m
There are no direct flights from San Antonio to London. There are no popular flight routes from San Antonio to London.
Search flight deals

  • 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 40m.

  • 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
American AirlinesPriceFrom $530Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
DeltaPriceFrom $531Free CancellationRating
7.9
8,005 reviews
Search Delta flights
British AirwaysPriceFrom $566Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $600Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $668Free CancellationRating
7.0
3,045 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge
Stansted
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?

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