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$273+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap 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 January 21, 2026.

This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:01 pm
SAT
-
LHR
2 stops15h 49m
Multiple Airlines
Wed 10/78:40 am
LHR
-
SAT
2 stops18h 20m
Multiple Airlines
Deal found 1/20$536
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:00 am
SAT
-
LHR
3 stops18h 00m
Air Canada
Wed 10/78:40 am
LHR
-
SAT
2 stops18h 20m
Air Canada
Deal found 1/20$540
This Expedia deal was found by Cheapflights users on 1/21. 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 2/181:40 pm
SAT
-
LHR
1 stop11h 10m
Iberia
Wed 2/257:40 pm
LHR
-
SAT
2 stops18h 43m
Iberia
Deal found 1/21$580
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/63:46 pm
SAT
-
LGW
2 stops56h 14m
Multiple Airlines
Mon 3/92:00 pm
LGW
-
SAT
1 stop28h 23m
Multiple Airlines
Deal found 1/21$587
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/112:15 pm
SAT
-
LHR
1 stop14h 00m
United Airlines
Wed 2/181:25 pm
LHR
-
SAT
2 stops31h 50m
United Airlines
Deal found 1/20$588
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:51 am
SAT
-
LHR
2 stops17h 19m
Air Canada
Tue 3/241:25 pm
LHR
-
SAT
2 stops28h 02m
Air Canada
Deal found 1/20$594
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/159:58 am
SAT
-
LHR
1 stop15h 32m
United Airlines
Tue 2/246:35 am
LHR
-
SAT
2 stops19h 53m
United Airlines
Deal found 1/20$595
This Air Canada deal was found by Cheapflights users on 1/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/119:00 am
SAT
-
LHR
2 stops16h 10m
Multiple Airlines
Wed 2/186:00 pm
LHR
-
SAT
2 stops27h 15m
Multiple Airlines
Deal found 1/21$596
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:25 pm
SAT
-
LGW
2 stops31h 35m
Multiple Airlines
Mon 3/92:00 pm
LGW
-
SAT
1 stop28h 23m
Multiple Airlines
Deal found 1/21$598
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/107:40 am
SAT
-
LHR
1 stop17h 50m
United Airlines
Tue 2/246:50 am
LHR
-
SAT
2 stops19h 38m
United Airlines
Deal found 1/21$598
This Air Canada deal was found by Cheapflights users on 1/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:00 am
SAT
-
LHR
2 stops17h 30m
Multiple Airlines
Tue 2/246:00 pm
LHR
-
SAT
2 stops27h 15m
Multiple Airlines
Deal found 1/20$601
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 2/116:01 pm
SAT
-
LHR
1 stop12h 14m
British Airways
Wed 2/1811:45 am
LHR
-
SAT
1 stop14h 11m
British Airways
Deal found 1/20$604

Find 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$580
(Expedia)

One-way from

$273
(United Airlines)

Popular in

January

Cheapest in

September

Average price

$1,700
Provider with most accurate pricing for San Antonio-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-London (LON) flights.
Search Deals
From San Antonio to London (LON)
Search Deals
One-way flight from San Antonio to London (LON)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 21, 2026.
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

Sun 2/22

11:43 am-7:30 am

1 stop13h 47m

London Heathrow

Wed 3/4

1:25 pm-12:27 pm

2 stops29h 02m

$588

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 3/17

11:44 am-7:30 am

1 stop14h 46m

London Heathrow

Tue 3/24

1:25 pm-12:27 pm

2 stops28h 02m

$588

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 2/10

7:40 am-7:30 am

1 stop17h 50m

London Heathrow

Tue 2/24

6:50 am-8:28 pm

2 stops19h 38m

$598

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

5:36 pm-10:00 am

1 stop11h 24m

London Heathrow

Wed 3/25

11:45 am-8:50 pm

1 stop14h 05m

$604

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 4/19

9:40 am-7:40 am

1 stop16h 00m

London Heathrow

Thu 4/30

2:05 pm-4:19 pm

2 stops32h 14m

$604

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 4/1

2:14 pm-7:40 am

1 stop11h 26m

London Heathrow

Wed 4/8

2:05 pm-3:11 pm

2 stops31h 06m

$604

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

4:10 pm-10:15 am

1 stop13h 05m

London Heathrow

Wed 3/25

7:40 am-8:54 pm

2 stops18h 14m

$608

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/18

12:17 pm-8:25 am

2 stops14h 08m

London Heathrow

Wed 2/25

9:10 am-7:53 pm

2 stops16h 43m

$613

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Fri 3/6

6:00 am-10:00 am

1 stop22h 00m

London Gatwick

Mon 3/9

2:00 pm-1:23 pm

1 stop28h 23m

$642

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Wed 3/25

6:00 am-12:05 pm

2 stops25h 05m

London Gatwick

Mon 3/30

9:05 pm-11:56 pm

2 stops32h 51m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 55 results
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Compare providers for flights from San Antonio to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to London in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-London flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 16, 2026.

Booking 34 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, August is the cheapest month in which you can book a flight from San Antonio to London (average of $131). Flying from San Antonio to London in June is currently the most expensive (average of $834). 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’s the top layover airport for flights from San Antonio to London?

Share of 1-stop round-trip flights from San Antonio to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Dallas (DFW) – chosen by Cheapflights users on 50% of 1-stop itineraries from San Antonio to London on Cheapflights.

What’s the cheapest layover airport for flights from San Antonio to London?

Average round-trip fare for 1-stop flights from San Antonio to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Houston (IAH) is the most affordable 1-stop option, with an average round-trip price of $608.

What’s the fastest layover option from San Antonio to London?

Shortest average travel time for 1-stop one-way flights from San Antonio to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dallas (DFW) have the shortest average one-way travel time for 1-stop routes: 11h 16m.

Which airport typically offers the quickest layover for flights from San Antonio to London?

Average layover duration for 1-stop one-way flights from San Antonio to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Dallas (DFW) offer the fastest connection on this route, with an average layover time of 1h 15m.

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 January 21, 2026.
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
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,088 reviews
Delta
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,191 reviews
Delta
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,173 reviews
Delta
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,094 reviews
Delta
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,689 reviews
Delta
7.9
Good
8,088 reviews

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 13h 47m. Fly via United Airlines, British Airways, or Turkish Airlines 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, Delta ($530), American Airlines ($530), and United Airlines ($531) offers the cheapest pricing from San Antonio to London. These flights start at 43% 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, August is the cheapest month in which you can book a flight from San Antonio to London (average of $131). Flying from San Antonio to London in June is currently the most expensive (average of $834). 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
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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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$530Average$703FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$530Average$848FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$531Average$930FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$566Average$863FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$600Average$780FlexibilityNo cancel feeOn-time72%
IberiaCheapest$668Average$956FlexibilityNo cancel feeOn-time77%

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