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Cheap flights from San Antonio to London from £171

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LON
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Antonio to London are usually found in August or September, booked 34 days in advance, depart on a Wednesday or Monday 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 5 November 2025.

Round-trip from

£452

One-way from

£171

Popular in

January

Cheapest in

August

Average price

£595
Delta
  • Delta
  • 26/11-4/12
  • 3 total stops
  • 36h 20m total
  • San Antonio to London
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American Airlines
  • American Airlines
  • 15/3
  • 1 total stop
  • 12h 49m total
  • San Antonio to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£153 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£41 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from San Antonio to London

Enter your travel dates to find the best prices.

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 5 November 2025.

Sun 9/1114:46SAT - LHR
1 stop12h 14mKLM
Tue 25/1110:45LHR - SAT
1 stop16h 17mKLM
Deal found 3/11£449
Wed 26/1106:32SAT - LHR
1 stop18h 33mDelta
Thu 4/1211:30LHR - SAT
2 stops17h 47mDelta
Deal found 5/11£452
Sun 9/1111:35SAT - LHR
1 stop12h 50mDelta
Tue 25/1108:40LHR - SAT
2 stops18h 39mDelta
Deal found 3/11£453
Tue 2/1217:00SAT - LHR
1 stop12h 40mKLM
Tue 9/1210:45LHR - SAT
1 stop13h 41mKLM
Deal found 4/11£458
Sun 30/1116:57SAT - LHR
1 stop31h 28mDelta
Tue 9/1208:55LHR - SAT
1 stop21h 39mDelta
Deal found 4/11£462
Tue 4/1116:35SAT - LHR
2 stops15h 10mDelta
Thu 20/1106:20LHR - SAT
2 stops16h 58mDelta
Deal found 4/11£467
Fri 5/1206:25SAT - LHR
1 stop18h 40mVirgin Atlantic
Wed 10/1211:30LHR - SAT
2 stops17h 27mVirgin Atlantic
Deal found 5/11£471
Thu 4/1213:06SAT - LHR
1 stop11h 19mVirgin Atlantic
Tue 9/1211:30LHR - SAT
2 stops17h 27mVirgin Atlantic
Deal found 3/11£472
Wed 26/1113:05SAT - LCY
2 stops13h 45mDelta
Thu 4/1210:00LCY - SAT
2 stops18h 57mDelta
Deal found 5/11£496
Thu 4/1215:10SAT - LGW
1 stop12h 50mMultiple Airlines
Mon 8/1214:00LGW - SAT
2 stops33h 05mMultiple Airlines
Deal found 4/11£526
Thu 4/1215:10SAT - LGW
1 stop12h 50mMultiple Airlines
Thu 11/1207:00LGW - SAT
2 stops36h 00mMultiple Airlines
Deal found 4/11£539
Tue 2/1214:12SAT - LGW
2 stops33h 48mMultiple Airlines
Sat 6/1214:00LGW - SAT
1 stop23h 55mMultiple Airlines
Deal found 5/11£544

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 5 November 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

Sun 18/1

18:17-10:00

1 stop33h 43m

London Gatwick

Thu 22/1

14:00-09:18

2 stops25h 18m

£347

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Sun 18/1

19:56-10:00

2 stops32h 04m

London Gatwick

Mon 26/1

14:00-00:07

1 stop16h 07m

£375

San AntonioLondon

SAT - LGW

SATLGW

San Antonio

Sun 18/1

18:17-10:00

1 stop33h 43m

London Gatwick

Fri 23/1

14:00-00:07

1 stop16h 07m

£379

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 26/11

06:32-07:05

1 stop18h 33m

London Heathrow

Thu 4/12

11:30-23:17

2 stops17h 47m

£452

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 19/11

14:00-11:25

1 stop15h 25m

London Heathrow

Wed 3/12

08:55-21:03

2 stops18h 08m

£453

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 2/12

08:00-09:00

1 stop19h 00m

London Heathrow

Tue 9/12

08:55-22:57

2 stops20h 02m

£453

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 3/12

13:06-07:50

1 stop12h 44m

London Heathrow

Fri 12/12

13:00-22:57

1 stop15h 57m

£458

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Tue 21/4

16:10-21:40

2 stops23h 30m

London Heathrow

Wed 6/5

06:40-23:18

2 stops22h 38m

£472

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 4/12

14:48-10:50

2 stops14h 02m

London Heathrow

Tue 9/12

11:30-22:57

2 stops17h 27m

£476

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 5/12

05:10-07:50

1 stop20h 40m

London Heathrow

Fri 12/12

10:45-20:23

1 stop15h 38m

£476

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 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 return 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 return flight from San Antonio to London. Price data was last updated on 31 October 2025.

The best time to book flights from San Antonio to London is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £100). Flying from San Antonio to London in June is currently the most expensive (average of £667). 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 5 November 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 18% on flights from San Antonio to London by exploring options for tickets in the afternoon.

How much does it cost for a return flight from San Antonio to London?

What’s the top stopover airport for flights from San Antonio to London?

Share of one-stop return flights from San Antonio to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Houston (IAH) – chosen by Cheapflights users on 46% of one-stop itineraries from San Antonio to London on Cheapflights.

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

Average return fare for one-stop flights from San Antonio to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Atlanta (ATL) is the most affordable one-stop option, with an average return flight price of £407.

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

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

Flights via Houston (IAH) have the shortest average one-way travel time for one-stop routes: 11h 15m.

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

Average stopover duration for one-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 stopover time of 1h 23m.

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 5 November 2025.
Read reviews from past customers who have flown with Virgin Atlantic from San Antonio to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
672 reviews
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 0 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 16h 58m. Fly via Delta or Iberia to get the fastest option. San Antonio and London are separated by a distance of 4986 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from San Antonio to London one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as £171. Users have also found prices from £305 and £306 on Lufthansa and United Airlines, respectively.

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

    The most popular flight routes from San Antonio to London are San Antonio - London Heathrow, San Antonio - London Gatwick and San Antonio - London City.

  • 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 holiday 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 £100). Flying from San Antonio to London in June is currently the most expensive (average of £667). 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

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