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£242 Cheap Flights from San Antonio (SAT) to London (LHR)

View £242 flight on Sun, 25 Apr 2027Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Heathrow Airport (LHR)

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Cheap Flights from San Antonio (SAT) to London (LHR)

Prices were available within the past 7 days and start at £242 for one-way flights and £640 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Mon, 23 Nov - Tue, 8 Dec
SAT
San Antonio
LHR
London
£640 Return, found 6 days ago
£640
Return
found 6 days ago
Select KLM flight, departing Mon, 23 Nov from San Antonio to London, returning Tue, 8 Dec, priced at £640 found 6 days ago
Iberia
Sun, 10 Jan - Tue, 19 Jan
SAT
San Antonio
LHR
London
£641 Return, found 6 days ago
£641
Return
found 6 days ago
Select Iberia flight, departing Sun, 10 Jan from San Antonio to London, returning Tue, 19 Jan, priced at £641 found 6 days ago
Iberia
Mon, 9 Nov - Mon, 16 Nov
SAT
San Antonio
LHR
London
£644 Return, found 1 day ago
£644
Return
found 1 day ago
Select Iberia flight, departing Mon, 9 Nov from San Antonio to London, returning Mon, 16 Nov, priced at £644 found 1 day ago
Air France
Mon, 23 Nov - Tue, 8 Dec
SAT
San Antonio
LHR
London
£645 Return, found 6 days ago
£645
Return
found 6 days ago
Select Air France flight, departing Mon, 23 Nov from San Antonio to London, returning Tue, 8 Dec, priced at £645 found 6 days ago
KLM
Wed, 10 Feb - Wed, 17 Feb
SAT
San Antonio
LHR
London
£646 Return, found 2 days ago
£646
Return
found 2 days ago
Select KLM flight, departing Wed, 10 Feb from San Antonio to London, returning Wed, 17 Feb, priced at £646 found 2 days ago
Iberia
Sun, 4 Oct - Wed, 4 Nov
SAT
San Antonio
LHR
London
£647 Return, found 3 days ago
£647
Return
found 3 days ago
Select Iberia flight, departing Sun, 4 Oct from San Antonio to London, returning Wed, 4 Nov, priced at £647 found 3 days ago
Virgin Atlantic
Mon, 9 Nov - Mon, 16 Nov
SAT
San Antonio
LHR
London
£648 Return, found 1 day ago
£648
Return
found 1 day ago
Select Virgin Atlantic flight, departing Mon, 9 Nov from San Antonio to London, returning Mon, 16 Nov, priced at £648 found 1 day ago
KLM
Mon, 21 Sept - Tue, 29 Sept
SAT
San Antonio
LHR
London
£650 Return, found 2 days ago
£650
Return
found 2 days ago
Select KLM flight, departing Mon, 21 Sept from San Antonio to London, returning Tue, 29 Sept, priced at £650 found 2 days ago
KLM
Sat, 17 Oct - Fri, 30 Oct
SAT
San Antonio
LHR
London
£650 Return, found 5 days ago
£650
Return
found 5 days ago
Select KLM flight, departing Sat, 17 Oct from San Antonio to London, returning Fri, 30 Oct, priced at £650 found 5 days ago
Lufthansa
Mon, 9 Nov - Mon, 16 Nov
SAT
San Antonio
LHR
London
£662 Return, found 1 day ago
£662
Return
found 1 day ago
Select Lufthansa flight, departing Mon, 9 Nov from San Antonio to London, returning Mon, 16 Nov, priced at £662 found 1 day ago

Find the cheapest month to fly from San Antonio (SAT) to London (LHR)

November is typically the cheapest month to fly

From £566 - £789 per traveller.

Frequently asked questions

How much does a flight from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow) cost?
You can find cheap one-way flights from £242 and cheap return flights from £640 SAT to LHR with Expedia. One-way flights typically cost between £282 and £1195. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when SAT to LHR ticket fares go up or down.
What is the cheapest month to fly from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
If you're looking for the cheapest time to fly from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow), October is typically your best bet. You can expect average return fares to be around £532 during this month. October often sees lower prices as the peak summer travel season has ended and the holiday rush hasn't yet begun, leading to reduced demand. Other budget-friendly months to consider for this route include September and November.
Which airlines fly direct from San Antonio, TX (SAT) to London (LHR)?
Enter SAT to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
British Airways is one of the cheapest airlines offering connecting return flights from San Antonio Intl. (SAT) to Heathrow (LHR), with tickets starting from around £487 for flights that can be booked for departure within the next year. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
To find a cheap flight from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
The cheapest months to fly from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow) are typically October and September, with return flights averaging around £532. While these months offer great value, the most popular times to travel are July and February, meaning you'll find plenty of flight options then. If you're looking for the best balance, consider flying in October or September for more affordable fares, and you'll still have a good selection of flights.
How many flights per day from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
There are approximately 67 connecting flights per day from San Antonio Intl. (SAT) to Heathrow (LHR). Some common connection points include Dallas-Fort Worth Intl. (DFW), Hartsfield-Jackson Atlanta Intl. (ATL), and O'Hare Intl. (ORD).
What is the earliest flight from San Antonio, TX (SAT) to London (LHR)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from San Antonio, TX (SAT) to London (LHR). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
You'll typically find the most flights from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow) on a Tuesday, with around 62 flights available. This gives you a good selection of options for your journey. Major airlines on this route include American Airlines, Delta, and United.
What are the most popular departure times for flights from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from San Antonio Intl. (SAT) to Heathrow (LHR) are in the afternoon, from 12pm to 3pm. Many major carriers, including American Airlines, Delta and United, offer flights during this window. Many travellers prefer this time as it allows for a relaxed morning before heading to the airport and an evening arrival at your destination.
How long does it take to fly from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
Flights from SAT to LHR with one stop typically take around 12 hours 20 minutes, covering approximately 8,000 kilometers. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between SAT and LHR. Airlines that offer business class service on this route include:
  • Alaska Airlines
  • British Airways
  • Air Canada
  • Skywest Air
  • Delta
  • Finnair
  • United
  • American Eagle
  • American Airlines
First class cabins are available on American Airlines.
How do I earn miles on a San Antonio, TX (SAT) to London (LHR) flight with Expedia?
It's easy to earn miles on a San Antonio, TX (SAT) to London (LHR) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from San Antonio, TX (SAT) to London (LHR) at the last minute?
Typically, booking a last minute flight from San Antonio, TX (SAT) to London (LHR) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Antonio, TX (SAT) to London (LHR) flight and hotel package?
Securing a San Antonio, TX (SAT) to London (LHR) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow)?
If you booked your San Antonio, TX (SAT-San Antonio Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Antonio Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Aeromexico, Air Canada, Air France, British Airways, Brussels Airlines, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, Virgin Atlantic
Roundtrip price
£640
Distance
7953 km

Book with confidence

Compare flights from San Antonio to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Antonio to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Antonio Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from San Antonio Intl. (SAT) to Heathrow (LHR)

The easiest way to view the best deals on flights from San Antonio to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Antonio Intl. to Heathrow start at just £640 and range up to £662.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near San Antonio and London
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your San Antonio to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Antonio Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from San Antonio to London easily and book with confidence

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*Available to Expedia members.