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$223+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheapflights Tip: The best prices from San Antonio to London are usually found in September or August, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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 December 10, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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.
Sat 12/277:04 pmSAT - LHR
1 stop33h 11mUnited Airlines
Thu 1/81:25 pmLHR - SAT
2 stops39h 50mUnited Airlines
Deal found 12/9$885
This Ovago deal was found by Cheapflights users on 12/8. 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.
Fri 12/1212:08 pmSAT - LHR
1 stop12h 32mLufthansa
Wed 12/1712:05 pmLHR - SAT
1 stop15h 27mLufthansa
Deal found 12/8$911
This Delta deal was found by Cheapflights users on 12/8. 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.
Fri 12/126:25 amSAT - LHR
1 stop18h 40mDelta
Wed 12/1711:05 amLHR - SAT
1 stop16h 14mDelta
Deal found 12/8$914
This CheapOair deal was found by Cheapflights users on 12/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:21 amSAT - LHR
1 stop17h 59mBritish Airways
Wed 12/176:15 amLHR - SAT
2 stops21h 45mBritish Airways
Deal found 12/8$925
This Finnair deal was found by Cheapflights users on 12/8. 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.
Sat 12/273:00 pmSAT - LHR
1 stop11h 35mMultiple Airlines
Thu 1/82:10 pmLHR - SAT
1 stop14h 32mMultiple Airlines
Deal found 12/8$1,019
This Delta deal was found by Cheapflights users on 12/10. 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 12/178:00 amSAT - LHR
1 stop17h 50mDelta
Wed 12/246:30 amLHR - SAT
2 stops21h 23mDelta
Deal found 12/10$1,038
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/172:12 pmSAT - LHR
1 stop11h 43mUnited Airlines
Wed 12/2410:00 amLHR - SAT
1 stop15h 41mUnited Airlines
Deal found 12/10$1,050
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Sat 12/133:10 pmSAT - LGW
1 stop12h 55mMultiple Airlines
Mon 12/152:00 pmLGW - SAT
2 stops33h 05mMultiple Airlines
Deal found 12/9$1,275
This Norse deal was found by Cheapflights users on 12/9. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:45 pmSAT - LGW
1 stop15h 15mMultiple Airlines
Mon 1/52:00 pmLGW - SAT
1 stop27h 50mMultiple Airlines
Deal found 12/9$1,491
This oojo deal was found by Cheapflights users on 12/10. 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.
Sat 12/278:19 pmSAT - LCY
2 stops36h 16mBritish Airways
Thu 1/82:45 pmLCY - SAT
2 stops37h 15mBritish Airways
Deal found 12/10$1,563
This Mytrip deal was found by Cheapflights users on 12/8. 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.
Fri 12/123:10 pmSAT - LGW
1 stop12h 50mMultiple Airlines
Wed 12/1711:55 amLGW - SAT
3 stops31h 49mMultiple Airlines
Deal found 12/8$1,650
This oojo deal was found by Cheapflights users on 12/10. 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.
Sun 12/215:48 pmSAT - LCY
2 stops38h 47mBritish Airways
Fri 1/92:45 pmLCY - SAT
2 stops37h 14mBritish Airways
Deal found 12/10$1,706

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$516
(Norse)

One-way from

$223
(Expedia)

Popular in

January

Cheapest in

September

Average price

$1,064
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. 7% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 10, 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 - LGW

SATLGW

San Antonio

Fri 1/16

6:30 am-10:00 am

1 stop21h 30m

London Gatwick

Fri 1/23

2:00 pm-11:52 pm

1 stop15h 52m

$532

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Fri 1/23

6:30 am-10:00 am

1 stop21h 30m

London Gatwick

Fri 1/30

2:00 pm-11:52 pm

1 stop15h 52m

$547

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Thu 1/15

9:09 am-10:00 am

1 stop18h 51m

London Gatwick

Thu 1/22

2:00 pm-11:52 pm

1 stop15h 52m

$602

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 3/9

1:37 pm-6:25 am

1 stop11h 48m

London Heathrow

Wed 3/18

8:40 am-10:42 pm

2 stops19h 02m

$629

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 1/8

12:55 pm-9:20 am

1 stop14h 25m

London Heathrow

Fri 1/16

11:45 am-10:55 pm

2 stops17h 10m

$629

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 1/24

8:00 am-6:25 am

1 stop16h 25m

London Heathrow

Sat 1/31

8:40 am-10:55 pm

2 stops20h 15m

$629

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sat 1/24

8:00 am-4:00 pm

2 stops26h 00m

London Heathrow

Sat 1/31

6:40 am-12:38 am

2 stops23h 58m

$631

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 1/21

1:40 pm-10:50 am

2 stops15h 10m

London Heathrow

Wed 1/28

6:30 am-5:22 pm

2 stops16h 52m

$633

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 2/11

8:00 am-6:55 am

2 stops16h 55m

London Heathrow

Wed 2/18

8:40 am-9:37 pm

2 stops18h 57m

$633

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 1/15

1:40 pm-10:50 am

2 stops15h 10m

London Heathrow

Thu 1/22

6:30 am-5:22 pm

2 stops16h 52m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-London flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 2025.

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 $835). 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 December 10, 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 18% on your trip compared to booking a flight at noon.

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 Tuesday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 75% 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.

Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $599.

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 December 10, 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
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
9,092 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
11,047 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
3,045 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
7,573 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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 11h 48m. Fly via Delta, Virgin Atlantic, or Scandinavian 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, American Airlines ($530), United Airlines ($531), and Delta ($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 $835). 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
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Harrow
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Watford
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Horley
Kingston upon Thames
Wembley
Folkestone
Eastbourne

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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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$530Average$838FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$531Average$930FlexibilityNo cancel feeOn-time69%
DeltaCheapest$531Average$743FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$566Average$883FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$600Average$974FlexibilityNo cancel feeOn-time72%
IberiaCheapest$668Average$930FlexibilityNo cancel feeOn-time77%

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