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Cheap flights from San Antonio to London from $222

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 4/26. 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
5:04 pm - 6:00 am
SAT
-
LGW
54h 56m
2 stops
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
SAT
15h 59m
1 stop
$565Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Lufthansa Logo
5:25 pm - 5:05 pm
SAT
-
LHR
17h 40m
2 stops
Lufthansa Logo
7:40 am - 11:12 pm
LHR
-
SAT
21h 32m
2 stops
$609Lufthansa
Mon, Feb 23 - Mon, Mar 2
Lufthansa Logo
5:25 pm - 7:35 pm
SAT
-
LHR
20h 10m
2 stops
Lufthansa Logo
8:30 am - 8:28 pm
LHR
-
SAT
17h 58m
2 stops
$619Lufthansa
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
12:45 pm - 9:10 am
SAT
-
LHR
14h 25m
1 stop
United Airlines Logo
7:40 am - 8:28 pm
LHR
-
SAT
18h 48m
2 stops
$630United Airlines
Mon, Feb 23 - Mon, Mar 2
Delta Logo
8:00 am - 6:25 am
SAT
-
LHR
16h 25m
1 stop
Delta Logo
8:40 am - 9:57 pm
LHR
-
SAT
19h 17m
2 stops
$631Delta
Sun, Feb 22 - Sat, Mar 7
United Airlines Logo
11:53 am - 10:15 am
SAT
-
LHR
17h 22m
1 stop
United Airlines Logo
6:35 am - 8:53 pm
LHR
-
SAT
19h 18m
2 stops
$633United Airlines
Wed, Mar 18 - Wed, Mar 25
Delta Logo
1:00 pm - 6:20 am
SAT
-
LHR
12h 20m
1 stop
Delta Logo
6:20 am - 8:30 pm
LHR
-
SAT
19h 10m
2 stops
$637Delta
Wed, Mar 11 - Wed, Mar 18
British Airways Logo
3:08 pm - 2:05 pm
SAT
-
LCY
16h 57m
2 stops
British Airways Logo
7:50 am - 11:56 pm
LCY
-
SAT
21h 06m
2 stops
$798British Airways
Wed, Mar 4 - Wed, Mar 11
British Airways Logo
9:20 am - 8:50 am
SAT
-
LCY
17h 30m
2 stops
British Airways Logo
7:50 am - 7:56 pm
LCY
-
SAT
18h 06m
2 stops
$831British Airways
Wed, Feb 25 - Wed, Mar 4
Iberia Logo
3:07 pm - 2:05 pm
SAT
-
LCY
16h 58m
2 stops
Iberia Logo
7:15 pm - 8:23 am
LCY
-
SAT
19h 08m
2 stops
$887Iberia
Wed, Feb 11 - Wed, Feb 18

Lufthansa flights from San Antonio to London

Our best Lufthansa deals on San Antonio to London flight tickets
Lufthansa
Feb 23
SAT5:25 pmSan Antonio
17h 40m
2 stops
LHR5:05 pmLondon Heathrow
Mar 2
LHR7:40 amLondon Heathrow
21h 32m
2 stops
SAT11:12 pmSan Antonio
$609
Lufthansa
Feb 23
SAT5:25 pmSan Antonio
20h 10m
2 stops
LHR7:35 pmLondon Heathrow
Mar 2
LHR8:30 amLondon Heathrow
17h 58m
2 stops
SAT8:28 pmSan Antonio
$619
Lufthansa
May 12
SAT5:29 pmSan Antonio
18h 56m
2 stops
LHR6:25 pmLondon Heathrow
May 20
LHR10:50 amLondon Heathrow
18h 04m
2 stops
SAT10:54 pmSan Antonio
$623

United Airlines flights from San Antonio to London

Our best United Airlines deals on San Antonio to London flight tickets
United Airlines
Feb 23
SAT12:45 pmSan Antonio
14h 25m
1 stop
LHR9:10 amLondon Heathrow
Mar 2
LHR7:40 amLondon Heathrow
18h 48m
2 stops
SAT8:28 pmSan Antonio
$630
United Airlines
Mar 18
SAT11:53 amSan Antonio
17h 22m
1 stop
LHR10:15 amLondon Heathrow
Mar 25
LHR6:35 amLondon Heathrow
19h 18m
2 stops
SAT8:53 pmSan Antonio
$633
United Airlines
Feb 25
SAT12:17 pmSan Antonio
14h 53m
2 stops
LHR9:10 amLondon Heathrow
Mar 4
LHR6:35 amLondon Heathrow
19h 53m
2 stops
SAT8:28 pmSan Antonio
$635

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 January 27, 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

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Mon 2/23

5:04 pm-6:00 am

2 stops54h 56m

London Gatwick

Mon 3/2

2:00 pm-11:59 pm

1 stop15h 59m

$565

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/23

5:25 pm-5:05 pm

2 stops17h 40m

London Heathrow

Mon 3/2

7:40 am-11:12 pm

2 stops21h 32m

$609

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/23

5:25 pm-7:35 pm

2 stops20h 10m

London Heathrow

Mon 3/2

8:30 am-8:28 pm

2 stops17h 58m

$619

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/23

12:45 pm-9:10 am

1 stop14h 25m

London Heathrow

Mon 3/2

7:40 am-8:28 pm

2 stops18h 48m

$630

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 2/22

8:00 am-6:25 am

1 stop16h 25m

London Heathrow

Sat 3/7

8:40 am-9:57 pm

2 stops19h 17m

$631

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

11:53 am-10:15 am

1 stop17h 22m

London Heathrow

Wed 3/25

6:35 am-8:53 pm

2 stops19h 18m

$633

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/11

1:00 pm-6:20 am

1 stop12h 20m

London Heathrow

Wed 3/18

6:20 am-8:30 pm

2 stops19h 10m

$637

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 3/4

3:08 pm-2:05 pm

2 stops16h 57m

London City

Wed 3/11

7:50 am-11:56 pm

2 stops21h 06m

$798

San AntonioLondon

SAT - LCY

SATLCY

San Antonio

Wed 2/25

9:20 am-8:50 am

2 stops17h 30m

London City

Wed 3/4

7:50 am-7:56 pm

2 stops18h 06m

$831

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-8:23 am

2 stops19h 08m

$887

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 September. Flight prices, which tend to average around $701, 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.

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 $875 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 36% 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 January 2026, prices for San Antonio to London flights are approximately 37% 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 50m

Direct flights

None
The fastest flight from San Antonio to London takes 11h 50m
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 50m.

  • 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
8,124 reviews
Search Delta flights
American AirlinesPriceFrom $530Free CancellationRating
7.2
11,201 reviews
Search American Airlines flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,209 reviews
Search United Airlines flights
British AirwaysPriceFrom $566Free CancellationRating
6.7
7,704 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $600Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $668Free CancellationRating
7.0
3,099 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
Crawley
Wembley
Dartford
Hayes
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted
Croydon
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