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Cheap flights from San Antonio to London Heathrow Airport from £245

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
10 ก.ค. — 17 ก.ค.1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Antonio to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from San Antonio to Heathrow
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 มิถุนายน 2026.

อ. 3/1114:10
SAT
-
LHR
1 stop15h 30m
Virgin Atlantic
อ. 17/1112:30
LHR
-
SAT
1 stop13h 52m
Virgin Atlantic
Deal found 7/6£582
อา. 8/1114:10
SAT
-
LHR
2 stops21h 30m
Scandinavian Airlines
อา. 15/1106:40
LHR
-
SAT
2 stops21h 47m
Scandinavian Airlines
Deal found 8/6£607
พ. 11/1114:10
SAT
-
LHR
2 stops19h 50m
Scandinavian Airlines
ศ. 4/1206:40
LHR
-
SAT
2 stops23h 48m
Scandinavian Airlines
Deal found 6/6£625
ศ. 23/1012:50
SAT
-
LHR
2 stops50h 45m
Multiple Airlines
จ. 26/1018:30
LHR
-
SAT
2 stops28h 03m
Multiple Airlines
Deal found 6/6£627
จ. 26/1017:00
SAT
-
LHR
2 stops17h 50m
Lufthansa
อ. 10/1107:40
LHR
-
SAT
2 stops21h 28m
Lufthansa
Deal found 7/6£648
พ. 30/1215:00
SAT
-
LHR
1 stop11h 15m
Iberia
พ. 13/119:40
LHR
-
SAT
2 stops18h 42m
Iberia
Deal found 8/6£649
พ. 7/1008:00
SAT
-
LHR
1 stop16h 25m
Delta
พ. 4/1108:40
LHR
-
SAT
2 stops17h 42m
Delta
Deal found 9/6£651
อ. 8/913:00
SAT
-
LHR
1 stop12h 15m
United Airlines
ศ. 18/906:50
LHR
-
SAT
2 stops15h 41m
United Airlines
Deal found 5/6£652
จ. 26/1014:00
SAT
-
LHR
1 stop12h 05m
Delta
อ. 10/1111:45
LHR
-
SAT
2 stops17h 35m
Delta
Deal found 8/6£653
อ. 17/1116:10
SAT
-
LHR
2 stops19h 30m
Scandinavian Airlines
จ. 23/1106:40
LHR
-
SAT
2 stops23h 48m
Scandinavian Airlines
Deal found 9/6£654
พ. 30/1212:50
SAT
-
LHR
2 stops16h 50m
Delta
พฤ. 14/110:00
LHR
-
SAT
2 stops19h 20m
Delta
Deal found 9/6£655
พ. 30/1212:50
SAT
-
LHR
2 stops16h 50m
Delta
พ. 13/108:40
LHR
-
SAT
2 stops17h 42m
Delta
Deal found 5/6£656

Find flight deals from San Antonio to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 มิถุนายน 2026.

Round-trip from

£582

One-way from

£245

Popular in

June

Cheapest in

October

Average price

£959
Virgin Atlantic
  • Virgin Atlantic
  • 3/11-17/11
  • 2 total stops
  • 29h 22m total
  • San Antonio to London
Search Deals
British Airways
  • British Airways
  • 7/9
  • 1 total stop
  • 12h 30m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£120 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Antonio to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 10 มิถุนายน 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

อ. 27/10

10:45-06:25

1 stop14h 40m

London Heathrow

พ. 4/11

10:00-23:20

2 stops19h 20m

£651
Fastest return journey

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

อ. 8/9

13:00-07:15

1 stop12h 15m

London Heathrow

ศ. 18/9

06:50-16:31

2 stops15h 41m

£652

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

อ. 17/11

16:10-21:35

3 stops23h 25m

London Heathrow

จ. 23/11

06:40-23:18

2 stops22h 38m

£661

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

อ. 27/10

16:10-21:40

2 stops24h 30m

London Heathrow

พ. 4/11

07:05-22:27

3 stops21h 22m

£683

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

อา. 29/11

07:30-07:30

1 stop18h 00m

London Heathrow

ส. 19/12

06:35-23:37

2 stops23h 02m

£690

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

พ. 12/8

12:37-12:05

1 stop17h 28m

London Heathrow

พ. 19/8

06:30-17:11

2 stops16h 41m

£698
Cheapest one-way

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

อ. 8/9

13:33-08:05

1 stop12h 32m

£248

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

จ. 7/9

14:43-12:05

2 stops15h 22m

£248

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

พฤ. 8/10

12:15-08:50

2 stops14h 35m

£286

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

ส. 15/8

19:49-11:55

2 stops58h 06m

£342

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 17 resultsSorted by cheapest first
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Best time to book a flight from San Antonio to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to London Heathrow Airport

How far ahead should I book a flight from San Antonio to London Heathrow Airport?

The price you pay for your flight from San Antonio to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £427). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £959). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from San Antonio to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Antonio to London Heathrow?

    San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly out of when you book flights from San Antonio to London Heathrow. 0 airlines have flights from San Antonio to London Heathrow on a regular basis. Booking flights from San Antonio to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from San Antonio to London Heathrow Airport?

    A quick flight from San Antonio to London Heathrow Airport can take about 12h 15m. Delta provides one of the quickest options available for as low as £652. The distance from San Antonio to London Heathrow Airport is about 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?

    Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.

  • Can I find deals for business class flights from San Antonio to Heathrow?

    Yes. Cheapflights offers flight deals from San Antonio to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £427). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £959). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Eastbourne
Watford
Swindon
Ipswich
Poole
Guildford
Romford

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Can Cheapflights find flights from San Antonio to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from San Antonio to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from San Antonio to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on San Antonio to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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