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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 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
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
Multiple Airlines Logo
6:00 am - 7:30 pm
SAT
-
LHR
32h 30m
3 stops
Multiple Airlines Logo
12:15 pm - 12:27 pm
LHR
-
SAT
29h 12m
3 stops
$623Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Lufthansa Logo
5:29 pm - 5:05 pm
SAT
-
LHR
17h 36m
2 stops
Lufthansa Logo
7:25 am - 10:54 pm
LHR
-
SAT
21h 29m
2 stops
$626Lufthansa
Tue, May 12 - Wed, May 20
Lufthansa Logo
2:10 pm - 2:45 pm
SAT
-
LHR
18h 35m
2 stops
Lufthansa Logo
6:30 am - 11:12 pm
LHR
-
SAT
22h 42m
2 stops
$629Lufthansa
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
7:00 am - 6:20 am
SAT
-
LHR
17h 20m
2 stops
United Airlines Logo
7:40 am - 8:28 pm
LHR
-
SAT
18h 48m
2 stops
$630United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
9:52 am - 7:30 am
SAT
-
LHR
16h 38m
1 stop
United Airlines Logo
6:35 am - 1:13 pm
LHR
-
SAT
35h 38m
2 stops
$633United Airlines
Tue, Mar 10 - Tue, Mar 17
Delta Logo
12:18 pm - 6:50 am
SAT
-
LHR
12h 32m
1 stop
Delta Logo
11:45 am - 10:42 pm
LHR
-
SAT
15h 57m
2 stops
$634Delta
Thu, Mar 5 - Tue, Mar 10
United Airlines Logo
12:17 pm - 9:10 am
SAT
-
LHR
14h 53m
2 stops
United Airlines Logo
6:35 am - 8:28 pm
LHR
-
SAT
19h 53m
2 stops
$635United Airlines
Wed, Feb 25 - Wed, Mar 4
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
Delta Logo
12:22 pm - 6:45 am
SAT
-
LHR
12h 23m
1 stop
Delta Logo
9:55 am - 10:42 pm
LHR
-
SAT
18h 47m
2 stops
$646Delta
Wed, Apr 1 - Thu, Apr 9

Lufthansa flights from San Antonio to London Heathrow Airport

Our best Lufthansa deals on San Antonio to London Heathrow Airport 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
May 12
SAT5:29 pmSan Antonio
17h 36m
2 stops
LHR5:05 pmLondon Heathrow
May 20
LHR7:25 amLondon Heathrow
21h 29m
2 stops
SAT10:54 pmSan Antonio
$626
Lufthansa
Feb 25
SAT2:10 pmSan Antonio
18h 35m
2 stops
LHR2:45 pmLondon Heathrow
Mar 4
LHR6:30 amLondon Heathrow
22h 42m
2 stops
SAT11:12 pmSan Antonio
$629

United Airlines flights from San Antonio to London Heathrow Airport

Our best United Airlines deals on San Antonio to London Heathrow Airport flight tickets
United Airlines
Feb 23
SAT7:00 amSan Antonio
17h 20m
2 stops
LHR6:20 amLondon Heathrow
Mar 2
LHR7:40 amLondon Heathrow
18h 48m
2 stops
SAT8:28 pmSan Antonio
$630
United Airlines
Mar 10
SAT9:52 amSan Antonio
16h 38m
1 stop
LHR7:30 amLondon Heathrow
Mar 17
LHR6:35 amLondon Heathrow
35h 38m
2 stops
SAT1:13 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 Heathrow Airport 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 28, 2026.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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

Tue 3/10

6:00 am-7:30 pm

3 stops32h 30m

London Heathrow

Tue 3/17

12:15 pm-12:27 pm

3 stops29h 12m

$623

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 5/12

5:29 pm-5:05 pm

2 stops17h 36m

London Heathrow

Wed 5/20

7:25 am-10:54 pm

2 stops21h 29m

$626

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/25

2:10 pm-2:45 pm

2 stops18h 35m

London Heathrow

Wed 3/4

6:30 am-11:12 pm

2 stops22h 42m

$629

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 2/23

7:00 am-6:20 am

2 stops17h 20m

London Heathrow

Mon 3/2

7:40 am-8:28 pm

2 stops18h 48m

$630

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 3/10

9:52 am-7:30 am

1 stop16h 38m

London Heathrow

Tue 3/17

6:35 am-1:13 pm

2 stops35h 38m

$633

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 3/5

12:18 pm-6:50 am

1 stop12h 32m

London Heathrow

Tue 3/10

11:45 am-10:42 pm

2 stops15h 57m

$634

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/25

12:17 pm-9:10 am

2 stops14h 53m

London Heathrow

Wed 3/4

6:35 am-8:28 pm

2 stops19h 53m

$635

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 - LHR

SATLHR

San Antonio

Wed 4/1

12:22 pm-6:45 am

1 stop12h 23m

London Heathrow

Thu 4/9

9:55 am-10:42 pm

2 stops18h 47m

$646

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 Heathrow Airport

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 Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Antonio, with most prices found around $580. If you’re not able to fly to London Heathrow Airport in October, then February is your next best option. Flight prices from San Antonio to London Heathrow Airport during February average around $740.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport 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 Heathrow Airport from San Antonio for as low as $681 on momondo.

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

You could potentially save up to 36% on your flight if you consider stops on a San Antonio to London Heathrow Airport flight.

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

As of January 2026, prices for San Antonio to London Heathrow Airport flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to London Heathrow Airport

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

Cheap San Antonio to London Heathrow Airport (SAT to LHR) flight deals and tips

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

Fastest flight time

11h 50m

Direct flights

None
The fastest flight from San Antonio to London Heathrow Airport takes 11h 50m
There are no direct flights from San Antonio to London Heathrow Airport. There are no popular flight routes from San Antonio to London Heathrow Airport.
Search flight deals

  • How far is San Antonio to London Heathrow by plane?

    There are 4973.6 mi between San Antonio and London Heathrow. 11h 50m is a normal flight duration for this route.

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

    Prices for flights from San Antonio Airport to London Heathrow Airport are refreshed on a daily basis.

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

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

    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 Heathrow Airport.

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

    The required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

Best airlines flying from San Antonio to London Heathrow Airport

Compare and see reviews for airlines that fly from San Antonio to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $530Free CancellationRating
7.9
8,122 reviews
Search Delta flights
American AirlinesPriceFrom $530Free CancellationRating
7.2
11,201 reviews
Search American Airlines flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,208 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
Stratford-upon-Avon
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted
Croydon

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Antonio.

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?

momondo provides multiple filters to help you find the best flight to London from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 not ready to book a flight from San Antonio to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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