HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$206+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Antonio to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 3, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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.
Tue 3/312:45 pm
SAT
-
LHR
2 stops18h 15m
Lufthansa
Tue 3/106:30 am
LHR
-
SAT
2 stops22h 02m
Lufthansa
Deal found 2/1$624
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/32:10 pm
SAT
-
LHR
1 stop11h 20m
United Airlines
Tue 3/106:35 am
LHR
-
SAT
2 stops19h 18m
United Airlines
Deal found 2/1$635
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/412:45 pm
SAT
-
LHR
2 stops16h 05m
United Airlines
Wed 3/116:35 am
LHR
-
SAT
2 stops19h 18m
United Airlines
Deal found 2/1$639
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 8/197:30 am
SAT
-
LHR
2 stops18h 10m
Lufthansa
Thu 9/37:25 am
LHR
-
SAT
2 stops21h 43m
Lufthansa
Deal found 2/2$647
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/1912:22 pm
SAT
-
LHR
1 stop13h 28m
Air France
Thu 3/2611:20 am
LHR
-
SAT
1 stop17h 09m
Air France
Deal found 2/2$648
This Delta deal was found by Cheapflights users on 2/1. 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 4/112:24 pm
SAT
-
LHR
1 stop12h 21m
Delta
Wed 4/88:40 am
LHR
-
SAT
2 stops20h 02m
Delta
Deal found 2/1$651
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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.
Sun 4/195:30 pm
SAT
-
LHR
2 stops18h 55m
Lufthansa
Thu 4/307:30 pm
LHR
-
SAT
2 stops33h 24m
Lufthansa
Deal found 2/2$658
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 3/21:52 pm
SAT
-
LGW
1 stop14h 08m
Multiple Airlines
Mon 3/92:00 pm
LGW
-
SAT
2 stops48h 30m
Multiple Airlines
Deal found 2/1$659
This United Airlines deal was found by Cheapflights users on 2/2. 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 4/1911:46 am
SAT
-
LHR
1 stop13h 54m
United Airlines
Thu 4/302:05 pm
LHR
-
SAT
2 stops32h 14m
United Airlines
Deal found 2/2$660
This oojo deal was found by Cheapflights users on 2/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:40 pm
SAT
-
LHR
1 stop11h 10m
British Airways
Tue 3/102:45 pm
LHR
-
SAT
1 stop13h 09m
British Airways
Deal found 2/1$661
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 4/61:25 pm
SAT
-
LHR
1 stop16h 55m
United Airlines
Mon 4/1310:50 am
LHR
-
SAT
2 stops39h 50m
United Airlines
Deal found 2/2$662
This Air Canada deal was found by Cheapflights users on 2/1. 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.
Tue 8/259:00 am
SAT
-
LHR
1 stop15h 35m
Multiple Airlines
Wed 9/27:25 am
LHR
-
SAT
2 stops19h 48m
Multiple Airlines
Deal found 2/1$663

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$624
(Cheapflightsfares)

One-way from

$206
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$728
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. 20% potential increase in price ($232 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($71 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 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

Tue 3/3

12:45 pm-1:00 pm

2 stops18h 15m

London Heathrow

Tue 3/10

6:30 am-11:32 pm

2 stops22h 02m

$624

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/4

9:58 am-7:30 am

1 stop15h 32m

London Heathrow

Wed 3/11

6:35 am-8:53 pm

2 stops19h 18m

$635

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 3/3

2:10 pm-7:30 am

1 stop11h 20m

London Heathrow

Tue 3/10

6:35 am-8:53 pm

2 stops19h 18m

$635

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 3/2

7:00 am-6:20 am

2 stops17h 20m

London Heathrow

Mon 3/9

6:50 am-8:53 pm

2 stops19h 03m

$635

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/18

2:20 pm-11:05 am

2 stops15h 45m

London Heathrow

Wed 3/25

6:35 am-8:53 pm

2 stops19h 18m

$639

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 4/1

12:24 pm-6:45 am

1 stop12h 21m

London Heathrow

Wed 4/8

8:40 am-10:42 pm

2 stops20h 02m

$651

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 4/13

5:20 am-6:45 am

1 stop19h 25m

London Heathrow

Tue 5/5

6:30 am-5:17 pm

2 stops16h 47m

$651

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 4/13

2:14 pm-10:40 am

2 stops14h 26m

London Heathrow

Tue 5/5

7:25 am-8:35 pm

2 stops19h 10m

$656

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Mon 3/2

1:52 pm-10:00 am

1 stop14h 08m

London Gatwick

Mon 3/9

2:00 pm-9:30 am

2 stops48h 30m

$659

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 4/19

11:46 am-7:40 am

1 stop13h 54m

London Heathrow

Thu 4/30

2:05 pm-4:19 pm

2 stops32h 14m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 45 results
1
2
3
...
5

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 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 FlightHub the most. FlightHub 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 30, 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 $839). 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 to fly round-trip from San Antonio to London?

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 February 3, 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
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
8,132 reviews
Delta
7.9
Good
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
9,231 reviews
Delta
7.9
Good
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
11,212 reviews
Delta
7.9
Good
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
3,101 reviews
Delta
7.9
Good
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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
7,711 reviews
Delta
7.9
Good
8,132 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

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 15h 32m. Fly via Lufthansa, United Airlines, or Iberia 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 42% 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 $839). 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
Ilford
Hounslow
Croydon
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Antonio to London

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Heathrow flights
Hobby to Heathrow flights
Austin to Heathrow flights
George Bush Intcntl to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Love Field to Heathrow flights
Dallas/Fort Worth to Stansted flights
Hobby to Gatwick flights
George Bush Intcntl to Gatwick flights
Austin to Gatwick flights
Hobby to London City flights
Dallas/Fort Worth to Edinburgh flights
Dallas/Fort Worth to London City flights
George Bush Intcntl to Stansted flights
George Bush Intcntl to London City flights
Austin to London City flights
Austin to Stansted flights
Love Field to Edinburgh flights
Love Field to Gatwick flights
Dallas/Fort Worth to Manchester flights
Hobby to Edinburgh flights
Dallas/Fort Worth to Luton flights
San Antonio to Heathrow flights
George Bush Intcntl to Edinburgh flights
Hobby to Manchester flights
George Bush Intcntl to Manchester flights
Austin to Edinburgh flights
Love Field to Manchester flights
El Paso to Heathrow flights
San Antonio to Gatwick flights
San Antonio to London City flights
George Bush Intcntl to Luton flights
El Paso to London City flights
Dallas/Fort Worth to Leeds flights
Austin to Manchester flights
San Antonio to Stansted flights
Dallas/Fort Worth to Southampton flights
El Paso to Gatwick flights
Lubbock to Heathrow flights
San Antonio to Edinburgh flights
San Antonio to Manchester flights
Harlingen to Heathrow flights
McAllen to Heathrow flights
Dallas/Fort Worth to Birmingham flights
McAllen to London City flights
Hobby to Leeds flights
George Bush Intcntl to Leeds flights
Corpus Christi to Heathrow flights
Love Field to Birmingham flights
Hobby to Birmingham flights

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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$530Average$703FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$530Average$848FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$531Average$929FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$563Average$829FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$600Average$780FlexibilityNo cancel feeOn-time72%
IberiaCheapest$668Average$999FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.