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Cheap flights from San Antonio to London from £202

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 19/7. 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
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Cheap return flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
12:15 - 09:20
SAT
-
LHR
39h 05m
2 stops
Scandinavian Airlines Logo
06:40 - 23:18
LHR
-
SAT
22h 38m
2 stops
£509Scandinavian Airlines
Fri, 4 Sep - Mon, 7 Sep
Scandinavian Airlines Logo
12:15 - 09:20
SAT
-
LHR
39h 05m
2 stops
Scandinavian Airlines Logo
06:40 - 23:18
LHR
-
SAT
22h 38m
2 stops
£510Scandinavian Airlines
Fri, 4 Sep - Mon, 7 Sep
Finnair Logo
14:15 - 09:00
SAT
-
LHR
12h 45m
1 stop
Finnair Logo
10:05 - 17:40
LHR
-
SAT
13h 35m
1 stop
£568Finnair
Wed, 12 Aug - Wed, 19 Aug
Iberia Logo
19:08 - 14:25
SAT
-
LHR
13h 17m
1 stop
Iberia Logo
14:25 - 21:17
LHR
-
SAT
12h 52m
1 stop
£569Iberia
Tue, 28 Jul - Tue, 13 Oct
Lufthansa Logo
17:18 - 16:40
SAT
-
LHR
17h 22m
2 stops
Lufthansa Logo
06:30 - 23:08
LHR
-
SAT
22h 38m
2 stops
£574Lufthansa
Mon, 27 Jul - Tue, 20 Oct
Scandinavian Airlines Logo
14:10 - 09:20
SAT
-
LHR
37h 10m
2 stops
Scandinavian Airlines Logo
14:20 - 23:18
LHR
-
SAT
38h 58m
2 stops
£575Scandinavian Airlines
Fri, 21 Aug - Sat, 29 Aug
Scandinavian Airlines Logo
12:10 - 09:20
SAT
-
LHR
39h 10m
2 stops
Scandinavian Airlines Logo
06:40 - 23:18
LHR
-
SAT
22h 38m
2 stops
£576Scandinavian Airlines
Wed, 19 Aug - Mon, 31 Aug
Scandinavian Airlines Logo
12:10 - 09:20
SAT
-
LHR
39h 10m
2 stops
Scandinavian Airlines Logo
19:30 - 23:18
LHR
-
SAT
33h 48m
2 stops
£577Scandinavian Airlines
Wed, 19 Aug - Mon, 31 Aug
Multiple Airlines Logo
07:00 - 06:30
SAT
-
LHR
17h 30m
2 stops
Multiple Airlines Logo
06:55 - 21:13
LHR
-
SAT
20h 18m
2 stops
£585Multiple Airlines
Wed, 5 Aug - Wed, 26 Aug
Lufthansa Logo
12:07 - 14:40
SAT
-
LHR
20h 33m
2 stops
Lufthansa Logo
19:30 - 21:16
LHR
-
SAT
31h 46m
2 stops
£587Lufthansa
Wed, 12 Aug - Wed, 19 Aug

Lufthansa flights from San Antonio to London Heathrow Airport

Our best Lufthansa deals on San Antonio to London Heathrow Airport flight tickets
Lufthansa
27 Jul
SAT17:18San Antonio
17h 22m
2 stops
LHR16:40London Heathrow
20 Oct
LHR06:30London Heathrow
22h 38m
2 stops
SAT23:08San Antonio
£574
Lufthansa
12 Aug
SAT12:07San Antonio
20h 33m
2 stops
LHR14:40London Heathrow
19 Aug
LHR19:30London Heathrow
31h 46m
2 stops
SAT21:16San Antonio
£587
Lufthansa
12 Aug
SAT11:50San Antonio
16h 50m
2 stops
LHR10:40London Heathrow
19 Aug
LHR18:30London Heathrow
32h 46m
2 stops
SAT21:16San Antonio
£587

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
23 Aug
SAT08:53San Antonio
19h 47m
2 stops
LHR10:40London Heathrow
27 Aug
LHR09:30London Heathrow
17h 15m
2 stops
SAT20:45San Antonio
£592
United Airlines
23 Aug
SAT08:53San Antonio
16h 02m
2 stops
LHR06:55London Heathrow
27 Aug
LHR09:30London Heathrow
17h 15m
2 stops
SAT20:45San Antonio
£593
United Airlines
15 Aug
SAT17:24San Antonio
31h 21m
1 stop
LHR06:45London Heathrow
27 Aug
LHR14:05London Heathrow
32h 03m
2 stops
SAT16:08San Antonio
£594

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 15 March 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

Cheapest return flight

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 4/9

12:15-09:20

2 stops39h 05m

London Heathrow

Mon 7/9

06:40-23:18

2 stops22h 38m

£509

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 4/9

12:15-09:20

2 stops39h 05m

London Heathrow

Mon 7/9

06:40-23:18

2 stops22h 38m

£510

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/8

14:15-09:00

1 stop12h 45m

London Heathrow

Wed 19/8

10:05-17:40

1 stop13h 35m

£568
Fastest return journey

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 28/7

19:08-14:25

1 stop13h 17m

London Heathrow

Tue 13/10

14:25-21:17

1 stop12h 52m

£569

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 27/7

17:18-16:40

2 stops17h 22m

London Heathrow

Tue 20/10

06:30-23:08

2 stops22h 38m

£574

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 21/8

14:10-09:20

2 stops37h 10m

London Heathrow

Sat 29/8

14:20-23:18

2 stops38h 58m

£575

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 19/8

12:10-09:20

2 stops39h 10m

London Heathrow

Mon 31/8

06:40-23:18

2 stops22h 38m

£576

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 19/8

12:10-09:20

2 stops39h 10m

London Heathrow

Mon 31/8

19:30-23:18

2 stops33h 48m

£577

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 5/8

07:00-06:30

2 stops17h 30m

London Heathrow

Wed 26/8

06:55-21:13

2 stops20h 18m

£585

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 12/8

12:07-14:40

2 stops20h 33m

London Heathrow

Wed 19/8

19:30-21:16

2 stops31h 46m

£587

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 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?

In general, October is the cheapest month to fly from San Antonio to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £475. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Antonio averaging around £496.

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 £659 when searching weeks before you fly. 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 £475 on momondo.

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

As of March 2026, prices for San Antonio to London Heathrow Airport flights are approximately 8% more expensive 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 return 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

12h 54m

Direct flights

None
The fastest flight from San Antonio to London Heathrow Airport takes 12h 54m
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?

    A flight from San Antonio to London Heathrow will travel around 4973.6 mi. In terms of flight time, this usually takes a little over 12h 54m.

  • 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 refresh daily.

  • 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 necessary travel and health documents for your London Heathrow Airport 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?

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to London for you.

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

momondo does allow users to show only those flights to London from San Antonio which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between San Antonio and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to London from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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