Cheap flights from San Antonio to London from $323
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to London departing on 4/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.United Airlines flights from San Antonio to London Heathrow Airport
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Virgin Atlantic flights from San Antonio to London Heathrow Airport
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Fly from
Fly to
Route
Depart
Return
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 1/23
2:55 pm-9:15 am
2 stops36h 20m
London Heathrow
Wed 1/27
5:25 pm-8:32 am
2 stops21h 07m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 11/24
4:32 pm-11:40 am
1 stop13h 08m
London Heathrow
Mon 11/30
10:50 am-10:06 pm
1 stop17h 16m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 2/6
4:10 pm-9:20 pm
2 stops23h 10m
London Heathrow
Thu 2/11
6:50 am-11:17 pm
2 stops22h 27m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 2/6
4:10 pm-7:10 am
3 stops33h 00m
London Heathrow
Thu 2/11
6:50 am-11:17 pm
2 stops22h 27m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 3/9
10:45 am-8:05 am
2 stops15h 20m
London Heathrow
Tue 3/16
6:30 am-8:22 pm
2 stops18h 52m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 2/6
12:10 pm-8:10 pm
1 stop26h 00m
London Heathrow
Thu 2/11
8:55 am-5:18 pm
1 stop14h 23m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Mon 2/8
8:53 am-7:20 am
1 stop16h 27m
London Heathrow
Tue 2/23
3:40 pm-11:58 pm
1 stop14h 18m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 3/9
11:34 am-6:50 am
1 stop13h 16m
London Heathrow
Tue 3/16
1:50 pm-10:55 pm
1 stop14h 05m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Wed 12/30
11:47 am-7:45 am
1 stop13h 58m
London Heathrow
Thu 1/14
8:40 am-8:52 pm
2 stops18h 12m
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Mon 11/2
11:00 am-7:20 am
2 stops14h 20m
London Heathrow
Tue 11/17
6:30 am-5:25 pm
2 stops16h 55m
See travel insights to London from
How to get the cheapest flight ticket from San Antonio to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between San Antonio and London Heathrow Airport?
Prices are currently low for flights on this route.
Typical prices usually range from $868 to $1,153.The lowest price recently found on this route was $866.
What is the cheapest month to fly to London Heathrow Airport?
The month of March is, on average, the cheapest month to fly to London Heathrow Airport from San Antonio, with most prices found around $874. If you’re not able to fly to London Heathrow Airport in March, then January is your next best option. Flight prices from San Antonio to London Heathrow Airport during January average around $908.
How far in advance should I book a flight from San Antonio to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,010 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Antonio for as low as $679 on momondo.
Can stopping save me money on San Antonio to London Heathrow Airport flights?
You could potentially save up to 22% on your flight if you consider stops on a San Antonio to London Heathrow Airport flight.
How have San Antonio to London Heathrow Airport flight prices changed over time?
What is the cheapest airline that flies from San Antonio to London Heathrow?
Delta and United Airlines are the most popular carriers operating from San Antonio to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to London Heathrow Airport from San Antonio according to our data. British Airways is the first choice among our users, with 66% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 9 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between San Antonio and London Heathrow Airport?
Dallas (DFW) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from San Antonio to London Heathrow Airport?
Flights via Atlanta (ATL) offer the lowest average round-trip price of $655.
Which layover airport has the shortest travel time from San Antonio to London Heathrow Airport?
Flights connecting via Houston (IAH) have the shortest average one-way travel time: 11h 15m.
Which layover airport has the shortest connection time from San Antonio to London Heathrow Airport?
Atlanta (ATL) has the shortest average layover time for this route: 1h 10m.
When to book flights from San Antonio to London Heathrow Airport
Cheap San Antonio to London Heathrow Airport (SAT to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to London Heathrow Airport
Frequently asked questions about flying from San Antonio to London Heathrow Airport
How far is San Antonio to London Heathrow by plane?
There are 4973.6 mi between San Antonio and London Heathrow. 11h 37m is a normal flight duration for this route.
When did momondo last update prices for flights from San Antonio Airport to London Heathrow Airport?
Prices for flights from San Antonio Airport to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Antonio Airport to London Heathrow Airport?
As of October 2026, there are 5 operators available to choose from for flights from San Antonio Airport to London Heathrow Airport.
How old do you have to be to fly from San Antonio Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Antonio to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from San Antonio to London Heathrow Airport is British Airways, representing 29% of all bookings. The subsequent popular airlines are American Airlines at 26%, United Airlines at 26%, and Virgin Atlantic at 10%.
Best airlines flying from San Antonio to London Heathrow Airport
Compare and see reviews for airlines that fly from San Antonio to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $596 | Free Cancellation | Rating 7.8 8,633 reviews | |||
| PriceFrom $646 | Free Cancellation | Rating 7.4 693 reviews | |||
| PriceFrom $658 | Free Cancellation | Rating 7.4 10,303 reviews | |||
| PriceFrom $723 | Free Cancellation | Rating 6.7 8,249 reviews | |||
| PriceFrom $892 | Free Cancellation | Rating 7.0 12,130 reviews |
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Why should I use momondo to find a flight deal from San Antonio to London?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Antonio.
Can I find flights from San Antonio to London with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to London from San Antonio with this policy.
How can momondo help me find flights from San Antonio to London?
momondo provides multiple filters to help you find the best flight to London from San Antonio. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from San Antonio to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from San Antonio to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.