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Cheap Flights from San Antonio International to London Heathrow

Compare San Antonio International to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from San Antonio International to London Heathrow

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to London Heathrow Airport? If you want to travel next month, return fares start from R 15,597. Find the lowest prices on one-way and return tickets right here.
London.R 5,342 per passenger.Departing Mon, 2 Nov.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Antonio International on Mon, 2 Nov, arriving in London Heathrow.Price includes taxes and charges.From R 5,342, select.
London.R 5,492 per passenger.Departing Sun, 6 Dec.One-way flight with United.Outbound indirect flight with United, departs from San Antonio International on Sun, 6 Dec, arriving in London Heathrow.Price includes taxes and charges.From R 5,492, select.
London.R 5,503 per passenger.Departing Mon, 26 Oct.One-way flight with United.Outbound indirect flight with United, departs from San Antonio International on Mon, 26 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 5,503, select.
London.R 5,503 per passenger.Departing Sun, 28 Feb.One-way flight with United.Outbound indirect flight with United, departs from San Antonio International on Sun, 28 Feb, arriving in London Heathrow.Price includes taxes and charges.From R 5,503, select.
London.R 5,554 per passenger.Departing Sun, 25 Apr.One-way flight with Air France.Outbound indirect flight with Air France, departs from San Antonio International on Sun, 25 Apr, arriving in London Heathrow.Price includes taxes and charges.From R 5,554, select.
London.R 5,554 per passenger.Departing Mon, 1 Mar.One-way flight with Air France.Outbound indirect flight with Air France, departs from San Antonio International on Mon, 1 Mar, arriving in London Heathrow.Price includes taxes and charges.From R 5,554, select.
London.R 5,557 per passenger.Departing Wed, 12 May.One-way flight with Air France.Outbound indirect flight with Air France, departs from San Antonio International on Wed, 12 May, arriving in London Heathrow.Price includes taxes and charges.From R 5,557, select.
London.R 6,319 per passenger.Departing Mon, 5 Jul.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Antonio International on Mon, 5 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 6,319, select.
London.R 6,410 per passenger.Departing Thu, 7 Jan.One-way flight with Air France.Outbound indirect flight with Air France, departs from San Antonio International on Thu, 7 Jan, arriving in London Heathrow.Price includes taxes and charges.From R 6,410, select.
London.R 6,899 per passenger.Departing Fri, 18 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Fri, 18 Sep, arriving in London Heathrow.Price includes taxes and charges.From R 6,899, select.
London.R 7,064 per passenger.Departing Sat, 22 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 22 Aug, arriving in London Heathrow.Price includes taxes and charges.From R 7,064, select.
London.R 9,137 per passenger.Departing Sun, 13 Jun.One-way flight with United.Outbound indirect flight with United, departs from San Antonio International on Sun, 13 Jun, arriving in London Heathrow.Price includes taxes and charges.From R 9,137, select.
London.R 9,427 per passenger.Departing Mon, 27 Jul.One-way flight with Brussels Airlines.Outbound indirect flight with Brussels Airlines, departs from San Antonio International on Mon, 27 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 9,427, select.

Find the cheapest month to fly from San Antonio International to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to London Heathrow flights are currently cheapest in November.
Jul
from R 9,421
Aug
from R 7,059
Sep
from R 6,894
Oct
from R 5,500
Nov
from R 5,338
Dec
from R 5,488
Jan
from R 6,405
Feb
from R 5,499
Mar
from R 5,550
Apr
from R 5,550
May
from R 5,553
Jun
from R 9,131

San Antonio International to London Heathrow: Alternative routes

Compare routes from San Antonio International to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

London City

12km from central London
Closest
from R 5,824
Search flights

London Heathrow

23km from central London
from R 5,338
Search flights

London Gatwick

40km from central London
Cheapest
from R 4,782
Search flights

London Luton

45km from central London
from R 6,784
Search flights

London Stansted

49km from central London
from R 5,946
Search flights

London Southend

57km from central London
from R 7,445
Search flights

San Antonio to London: Flight information

The things to know before you go.
Cheapest flight foundR 5,342
Cheapest month to flyNovember

Finding cheap flights from San Antonio International to London Heathrow: Frequently asked questions

The best price we found for a return flight from San Antonio International to London Heathrow is R 14,548. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Antonio International to London Heathrow. But we found flights with one or more stops from R 14,548.
As of July 2026, there are no flights flying from San Antonio International to London Heathrow.
The cheapest month to fly from San Antonio International to London Heathrow is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to London Heathrow Airport on Wednesday, 27 January 2027.
No airlines currently offer direct flights between San Antonio International Airport and London Heathrow Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Iberia offers the cheapest flight tickets to London Heathrow.

Flying from San Antonio International Airport (SAT) to London Heathrow Airport (LHR): what you need to know

  • London's timezone is UTC+0, which makes London six hours ahead of San Antonio.

  • Your SAT to LHR flight won't wait if you're late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • Travelling during a peak time such as July? Public holidays and other popular seasons can result in longer lines at airport checkpoints. Play it safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • We make it simple to book a flight with a stopover. To see all your options for tickets from San Antonio International Airport to London Heathrow Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Stopovers between SAT and LHR include:

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

    • Houston George Bush Intercntl. Airport

How to find the cheapest flights from San Antonio International Airport (SAT) to London Heathrow Airport (LHR)

  • At the moment, R 5,338 is the cheapest price we've seen for a one-way San Antonio International Airport to London Heathrow Airport flight. The best price for a return plane ticket is R 14,548. Remember that fares can change due to demand at the time of booking.

  • To find cheap tickets from SAT to LHR, book ahead. Airlines typically offer the most competitive fares when flights are first made available.

  • Getting cheap flights from San Antonio International Airport to London Heathrow Airport is easier if you can be flexible with your travel dates. Use the 'Whole month' function to see the best prices across the month and score a great deal.

  • Snapping up cheap flights from SAT to LHR is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know as soon as fares go down.

  • Tailor your trip using filters. Select your arrival and departure times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest' flights from San Antonio International Airport to London Heathrow Airport.

Handy information about San Antonio International Airport (SAT)

  • SAT's address is 9800 Airport Boulevard.

  • San Antonio International Airport scores top marks for on-time performance. 82% of flights that depart SAT arrive at their destination on time.

  • Central San Antonio to San Antonio International Airport is approximately 14 kilometres. Depending on traffic, it'll take about 20 minutes to get there if you're catching a taxi, ride-sharing or driving.

  • You can expect a trip time of about 50 minutes on public transport.

  • Catching an early flight from San Antonio International Airport to London Heathrow Airport? Avoid rushing to the terminal (and get some extra shut-eye) by picking one of these hotels near SAT:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • From London Heathrow Airport, London is approximately 24 kilometres away. It takes around 45 minutes to reach the centre by car.

  • It'll take around 25 minutes if you're travelling on public transport.

When to fly to London Heathrow Airport (LHR)

  • July is the most popular month for flights from San Antonio International Airport to London Heathrow Airport. For a quieter experience, visit London in March.

  • The warmest month in London is July, with the temperature ranging between 11ºC (52ºF) and 26ºC (79ºF). Lock in your flights from San Antonio International Airport to London Heathrow Airport in this month if this is the type of weather you like.

  • January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Search for cheap tickets from SAT to LHR sometime around then if you want to travel when it's cooler.

Explore more of the United Kingdom

  • You've done London, now it's time to explore other corners of the United Kingdom. Journey around 257 kilometres north-west to Manchester to check off its top attractions. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, you'll have a full itinerary ahead.

  • Birmingham is another sought-after destination in the United Kingdom and is around 161 kilometres north-west of London. No journey is complete without dropping by Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

Plan the rest of your trip from San Antonio to London

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.