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$248+ Cheap flights from San Antonio (SAT) to London (LON)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from San Antonio to London are usually found in August or February, booked 32 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from San Antonio to London

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to London (LON). 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 August 20, 2025.

Round-trip from

$511
(Expedia)

One-way from

$248
(Norse)

Popular in

January

Cheapest in

August

Average price

$724
From San Antonio to London (LON)
Search Deals
One-way flight from San Antonio to London (LON)
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Highest demand for flights based on searches. 18% potential increase in price ($212 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from San Antonio to London

Cheapest flights from San Antonio to London
Explore the most affordable flight options available from San Antonio to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Expedia deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:44 pmSAT - LHR
1 stop14h 16mIberia
Wed 9/2411:30 amLHR - SAT
2 stops17h 30mIberia
Deal found 8/19$511
This Expedia deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:49 pmSAT - LHR
1 stop13h 36mIberia
Tue 9/168:00 pmLHR - SAT
2 stops33h 00mIberia
Deal found 8/20$521
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/314:31 pmSAT - LHR
1 stop32h 44mDelta
Tue 9/169:20 amLHR - SAT
1 stop16h 56mDelta
Deal found 8/20$522
This Iberia deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/43:00 pmSAT - LHR
1 stop11h 15mIberia
Thu 11/202:10 pmLHR - SAT
1 stop13h 47mIberia
Deal found 8/20$523
This Gurufare deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:44 pmSAT - LHR
1 stop17h 01mFinnair
Wed 10/158:20 amLHR - SAT
1 stop15h 25mFinnair
Deal found 8/19$524
This Booking.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:16 pmSAT - LHR
1 stop13h 29mBritish Airways
Wed 11/192:10 pmLHR - SAT
1 stop13h 47mBritish Airways
Deal found 8/18$525
This Ovago deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:00 pmSAT - LHR
1 stop11h 50mBritish Airways
Tue 10/78:20 amLHR - SAT
1 stop13h 27mBritish Airways
Deal found 8/19$526
This Gurufare deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:39 pmSAT - LHR
1 stop12h 01mBritish Airways
Wed 11/510:15 amLHR - SAT
1 stop13h 47mBritish Airways
Deal found 8/19$527
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:26 amSAT - LHR
2 stops15h 24mDelta
Wed 10/89:00 amLHR - SAT
2 stops19h 42mDelta
Deal found 8/20$529
This Cheapflightsfares deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/11:00 pmSAT - LHR
1 stop11h 50mBritish Airways
Wed 10/812:00 pmLHR - SAT
1 stop13h 43mBritish Airways
Deal found 8/20$531
This Finnair deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:44 pmSAT - LHR
1 stop17h 01mFinnair
Tue 9/168:20 amLHR - SAT
1 stop15h 27mFinnair
Deal found 8/20$532
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:16 pmSAT - LHR
1 stop13h 29mAmerican Airlines
Wed 11/192:10 pmLHR - SAT
1 stop13h 47mAmerican Airlines
Deal found 8/18$534

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to London 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from San Antonio to London that are best for you.

Fly from

San Antonio

Fly to

London

Route

Depart

Return

Price

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 9/10

12:44 pm-9:00 am

1 stop14h 16m

London Heathrow

Wed 9/24

11:30 am-11:00 pm

2 stops17h 30m

$511

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 9/10

6:49 pm-2:25 pm

1 stop13h 36m

London Heathrow

Tue 9/16

8:00 pm-11:00 pm

2 stops33h 00m

$521

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 8/31

4:31 pm-7:15 am

1 stop32h 44m

London Heathrow

Tue 9/16

9:20 am-8:16 pm

1 stop16h 56m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 9/10

12:44 pm-9:00 am

1 stop14h 16m

London Heathrow

Wed 10/1

6:45 pm-8:51 pm

2 stops32h 06m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 9/6

6:49 pm-9:00 am

1 stop32h 11m

London Heathrow

Wed 10/1

11:30 am-7:45 pm

2 stops38h 15m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 9/8

1:44 pm-9:00 am

1 stop13h 16m

London Heathrow

Wed 10/1

8:00 pm-7:45 pm

2 stops29h 45m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 9/7

5:18 pm-2:25 pm

1 stop15h 07m

London Heathrow

Wed 10/1

11:30 am-8:51 pm

2 stops39h 21m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 9/9

12:44 pm-9:00 am

1 stop14h 16m

London Heathrow

Wed 10/1

3:50 pm-7:45 pm

2 stops33h 55m

$522

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 11/4

3:00 pm-8:15 am

1 stop11h 15m

London Heathrow

Thu 11/20

2:10 pm-9:57 pm

1 stop13h 47m

$523

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/14

2:36 pm-8:15 am

1 stop11h 39m

London Heathrow

Tue 1/20

8:20 am-5:50 pm

1 stop15h 30m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 52 results
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Best time to book a flight from San Antonio to London

Have a flexible travel schedule? Discover the best time to fly to London from San Antonio with our price prediction graph.
Estimated round-trip 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

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to London. Price data was last updated on August 8, 2025.

Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Antonio to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from San Antonio to London (average of $661). Flying from San Antonio to London in June is currently the most expensive (average of $1,097). 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.

What is the cheapest time of day to fly from SAT to LON?

Find hourly flight availability from San Antonio to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

A simple way to save on the total cost of your ticket is to fly from San Antonio to London in the evening. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from San Antonio to London?

Use this chart to determine the cheapest time to fly round-trip from San Antonio to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Antonio to London flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated August 20, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from San Antonio to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,883 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,289 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from San Antonio to London. 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?

    Most people fly from San Antonio (SAT) if they book a flight from San Antonio to London. On average, San Antonio has 0 outbound flights to London per day from 6 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

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

    There are many flights that can get you from San Antonio to London in 14h 16m. Fly via Iberia, American Airlines, or KLM to get the fastest option. The distance from San Antonio to London is about 4967 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Antonio to London round-trip?

    According to our current data, British Airways ($570), American Airlines ($611), and Delta ($649) offers the cheapest pricing from San Antonio to London. These flights start at 39% lower than the current average price 3 months from now.

  • What are the most popular routes from San Antonio to London?

    When deciding which route to take from San Antonio to London consider San Antonio - London Heathrow, San Antonio - London Gatwick or San Antonio - London City as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Antonio to London 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?

    Currently, November is the cheapest month in which you can book a flight from San Antonio to London (average of $661). Flying from San Antonio to London in June is currently the most expensive (average of $1,097). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Dartford
Dover
Orpington
Gatwick
Borehamwood
Aylesbury
Chelmsford
Bedford
Folkestone
Chichester
Arundel
Eastbourne
Milton Keynes

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Alternative routes for San Antonio to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from San Antonio to London

Discover the top 6 airlines that operate flights from San Antonio to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$570Average$910FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$611Average$873FlexibilityNo cancel feeOn-time71%
DeltaCheapest$649Average$1,032FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$672Average$988FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$688Average$1,207FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$698Average$997FlexibilityNo cancel feeOn-time69%

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