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Find cheap flights from London Heathrow Airport to San Antonio from $421

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to San Antonio departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Antonio, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Cheap flight deals from Heathrow to San Antonio

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:15 am - 10:59 pmLHR-SAT
17h 44m1 stop
5:56 pm - 7:30 amSAT-LHR
31h 34m1 stop
$653Finnair
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Mon, Apr 15 - Sun, Apr 21
9:15 am - 8:26 pmLHR-SAT
17h 11m1 stop
3:10 pm - 10:10 pmSAT-LHR
25h 00m2 stops
$655Finnair
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Mon, Apr 15 - Sun, Apr 21
10:45 am - 9:57 pmLHR-SAT
17h 12m1 stop
3:53 pm - 5:15 pmSAT-LHR
19h 22m2 stops
Wed, Apr 17 - Tue, Apr 30
2:30 pm - 9:25 amLHR-SAT
24h 55m2 stops
1:10 pm - 6:25 amSAT-LHR
11h 15m1 stop
Mon, Apr 15 - Wed, May 1
7:25 am - 4:46 pmLHR-SAT
15h 21m1 stop
10:13 am - 6:30 amSAT-LHR
14h 17m1 stop
$825JetBlue
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Wed, May 1 - Thu, May 9
7:25 am - 4:46 pmLHR-SAT
15h 21m1 stop
10:13 am - 6:30 amSAT-LHR
14h 17m1 stop
$844JetBlue
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Wed, May 1 - Mon, May 13
6:50 am - 8:15 pmLHR-SAT
19h 25m2 stops
9:45 am - 5:55 amSAT-LHR
14h 10m2 stops
$1,010United Airlines
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Wed, May 8 - Wed, May 22
6:30 am - 11:02 pmLHR-SAT
22h 32m2 stops
1:30 pm - 10:40 amSAT-LHR
15h 10m2 stops
$1,022United Airlines
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Tue, Apr 30 - Tue, May 7
8:40 am - 3:46 pmLHR-SAT
13h 06m1 stop
2:28 pm - 7:50 amSAT-LHR
11h 22m1 stop
$1,067British Airways
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Mon, May 6 - Mon, May 13
10:30 am - 5:28 pmLHR-SAT
12h 58m1 stop
2:28 pm - 7:50 amSAT-LHR
11h 22m1 stop
$1,073British Airways
Find Deal
Tue, Apr 30 - Sat, May 11

Flights from Heathrow to San Antonio - Travel Insights & Trends

Get data-powered insights and trends into flights from Heathrow to San Antonio to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London Heathrow Airport to San Antonio?

The average price of all flights from London Heathrow Airport to San Antonio clicked on KAYAK for each day over the last 12 months.
When flying from London Heathrow Airport to San Antonio, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

What is the cheapest month to fly from London Heathrow Airport to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to San Antonio is February, where tickets cost $674 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $1,018 and $1,018 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London Heathrow Airport to San Antonio, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 77 days before departure.

Which airlines provide the cheapest flights from London Heathrow Airport to San Antonio?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from London Heathrow Airport to San Antonio found on KAYAK was with Finnair for $1,326. Finnair proposed a round-trip connection from $653 and JetBlue from $825.

How long does a flight from London Heathrow Airport to San Antonio take?

Flying to San Antonio from London Heathrow Airport requires at least one layover, as there are no direct flights for this route. The shortest flight duration is 12h 58m.

Good to know

Low season

January

High season

October

Cheapest flight

$421
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from London Heathrow Airport to San Antonio

When to book flights from Heathrow to San Antonio

Are your dates flexible? Find out the best times to travel from Heathrow to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to San Antonio flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Antonio was $421 for a one-way ticket and $653 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and San Antonio?

    Yes

  • Which airports will I be using when flying from London Heathrow Airport to San Antonio?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at San Antonio, also known as San Antonio.

  • Which aircraft models fly most regularly from London Heathrow Airport to San Antonio?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to San Antonio?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London Heathrow Airport and San Antonio, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from London to San Antonio, United Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from London to San Antonio are United Airlines and British Airways. With an average price for the route of $1,195 and an overall rating of 7.4, United Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of $1,222 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from London Heathrow Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Heathrow to San Antonio

Need help choosing which airline to fly with from Heathrow to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
7.4
United AirlinesOverall score based on 11481 reviews
77boarding
67food
72comfort
71entertainment
74overall
81crew
Airline reviews

All good except paid for wifi that did not work

Read more about United Airlines

All good except paid for wifi that did not work

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

Some of these FA’s need attitude check. Snarky bitches

This flight was a code share on Air New Zealand.

The plane boarded and deplaned twice before the crew timed out. Flight was 7 hours late departing. Horrible experience!

The overall ambiance was good. Seating ain the last row not so pleasant.

Very good service and very helpful support staff (wheelchair service)

Got automatically assigned middle seats unless you fork out extra money for a seat assignment, not impressed.

Flight was canceled 12 hours before take-off due to “weather”

The flight was short and that was the best part. The flight was about 90 minutes delayed.

I sat in the last row of seats. On an 8 hour flight they allowed folks to stand and talk and drink in the back area near the toilets the whole time. They were at times loud and in the way. It was a little annoying. The crew on this trip were pretty mediocre and the plane was littered with trash when we disembarked.

Boarding process needs to be improved. Business class passengers were told to stand in the economy line and vice versa.

I travelled on biz class and f there is no water in the toilette to wash my hands I would expect to have this indicated somehow and not just finding out when I'm there expecting to be able to wash my hands and teeth. Also this is in general that it is always so rushy at the end of these kind of long flights. It is like we are sitting there for 9 hours and the last 1.5 hours just feels like I have time for nothing. Because food comes and at the same time we are close to destination everyone tries to pack their stuff and go to toilette and eat and everything :))) not that like I would know a good solution here I just wanted to raise this :)

Emergency row seat less comfortable than promoted. Restricted by emergency life raft storage.

Better communication to those connecting flights and have a customer care desk at the airports

The entertainment system in our row was not working. That makes for a VERY long flight!!

Pre flight food options were not working and made the flight not enjoyable. Post experiences of British airways have been positive, but this is enough to stop me using British airways again

Flight cancelled and i was rebooked on delta. Delta business class is not the same as British

Boarding could be smoother. But the flight crew was excellence. Very professional, friendly and helpful.

Everything was fine except my screen wasn’t working and I was unable to watch any movies or TV. Staff tried 3 times to reboot it, without success.

Book cheap flights from London to San Antonio

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to San Antonio found on KAYAK in the last 72 hours.
5/1Wed
2 stops
29h 28mLHR-SAT
$421
4/18Thu
2 stops
23h 58mLHR-SAT
$423
4/17Wed
2 stops
29h 28mLHR-SAT
$431
6/23Sun
2 stops
55h 18mLHR-SAT
$432
5/1Wed
3 stops
42h 13mLHR-SAT
$452
7/30Tue
2 stopsFinnair
15h 25mLHR-SAT
$1,326
7/30Tue
1 stopJetBlue
30h 31mLHR-SAT
$1,385
6/23Sun
1 stopBritish Airways
17h 46mLHR-SAT
$1,537
8/13Tue
1 stopBritish Airways
15h 25mLHR-SAT
$2,212
8/30Fri
3 stopsUnited Airlines
25h 03mLHR-SAT
$3,688

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Last minute flights from Heathrow to San Antonio

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to San Antonio that are departing in the next 10 days.
4/2Tue
multi-stopFinnair
28h 42mLHR-SAT
4/6Sat
multi-stopFinnair
13h 46mSAT-LHR
$1,236
4/2Tue
multi-stopFinnair
13h 43mLHR-SAT
4/6Sat
multi-stopFinnair
21h 04mSAT-LHR
$1,395
4/2Tue
multi-stopAer Lingus
32h 27mLHR-SAT
4/6Sat
multi-stopAer Lingus
20h 49mSAT-LHR
$1,505

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London Heathrow Airport - San Antonio Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Destination:

San Antonio (SAT)United States

Return flight deals:

San Antonio - London Heathrow Airport

Cabin classes: