Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to London from $273

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 4/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from San Antonio to London

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Antonio to London.
 Logo
7:00 am - 10:55 amSAT-LGW
21h 55m1 stop
 Logo
10:55 am - 2:00 pmLGW-SAT
33h 05m1 stop
Wed, Apr 30 - Wed, May 7
 Logo
7:00 am - 10:55 amSAT-LGW
21h 55m1 stop
 Logo
10:55 am - 10:47 amLGW-SAT
29h 52m2 stops
Wed, Apr 30 - Wed, May 7
 Logo
2:37 pm - 6:55 amSAT-LGW
34h 18m2 stops
 Logo
10:00 am - 5:04 amLGW-SAT
25h 04m2 stops
Tue, May 13 - Tue, May 20
Iberia Logo
12:27 pm - 9:00 amSAT-LHR
14h 33m1 stop
Iberia Logo
3:30 pm - 11:29 pmLHR-SAT
13h 59m1 stop
$671Iberia
Find Deal
Mon, Sep 15 - Wed, Oct 15
Iberia Logo
2:40 pm - 10:50 amSAT-LHR
14h 10m1 stop
Iberia Logo
11:30 am - 11:37 pmLHR-SAT
18h 07m2 stops
$679Iberia
Find Deal
Mon, Aug 11 - Fri, Aug 22
United Airlines Logo
1:10 pm - 9:40 amSAT-LHR
14h 30m1 stop
United Airlines Logo
2:05 pm - 4:39 pmLHR-SAT
32h 34m2 stops
$684United Airlines
Find Deal
Wed, Apr 23 - Tue, Apr 29
United Airlines Logo
2:11 pm - 8:20 amSAT-LHR
12h 09m1 stop
United Airlines Logo
7:25 am - 8:34 pmLHR-SAT
19h 09m2 stops
$692United Airlines
Find Deal
Wed, Apr 30 - Wed, May 7
British Airways Logo
8:37 pm - 6:25 amSAT-LHR
27h 48m1 stop
British Airways Logo
8:20 am - 3:49 pmLHR-SAT
13h 29m1 stop
$724British Airways
Find Deal
Sat, Aug 16 - Fri, Aug 29
British Airways Logo
8:37 pm - 10:50 amSAT-LHR
32h 13m2 stops
British Airways Logo
6:15 am - 7:56 pmLHR-SAT
19h 41m2 stops
$726British Airways
Find Deal
Sat, Aug 16 - Fri, Aug 29
American Airlines Logo
9:05 am - 8:35 amSAT-LGW
17h 30m2 stops
American Airlines Logo
12:20 pm - 11:09 pmLGW-SAT
16h 49m2 stops
$771American Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4

Iberia flights from San Antonio to London

Our best Iberia deals on San Antonio to London flight tickets
Iberia
Sep 15
SAT12:27 pmSan Antonio
14h 33m
1 stop
LHR9:00 amLondon Heathrow
Oct 15
LHR3:30 pmLondon Heathrow
13h 59m
1 stop
SAT11:29 pmSan Antonio
Iberia
Aug 11
SAT2:40 pmSan Antonio
14h 10m
1 stop
LHR10:50 amLondon Heathrow
Aug 22
LHR11:30 amLondon Heathrow
18h 07m
2 stops
SAT11:37 pmSan Antonio
Iberia
May 7
SAT6:34 pmSan Antonio
11h 41m
1 stop
LHR12:15 pmLondon Heathrow
May 14
LHR3:10 pmLondon Heathrow
13h 52m
1 stop
SAT11:02 pmSan Antonio

Delta flights from San Antonio to London

Our best Delta deals on San Antonio to London flight tickets
Delta
Apr 30
SAT10:55 amSan Antonio
16h 00m
2 stops
LHR8:55 amLondon Heathrow
May 7
LHR8:40 amLondon Heathrow
17h 46m
2 stops
SAT8:26 pmSan Antonio
Delta
Sep 15
SAT12:10 pmSan Antonio
13h 05m
1 stop
LHR7:15 amLondon Heathrow
Oct 15
LHR11:45 amLondon Heathrow
18h 40m
2 stops
SAT12:25 amSan Antonio
Delta
Aug 11
SAT12:15 pmSan Antonio
16h 00m
2 stops
LHR10:15 amLondon Heathrow
Aug 22
LHR11:45 amLondon Heathrow
18h 29m
2 stops
SAT12:14 amSan Antonio

See travel insights to London from

How to get the cheapest flight ticket from San Antonio to London

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 cheapest month to fly to London?

The cheapest month to fly to London from San Antonio is in February. Flight prices, which tend to average around $743, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from San Antonio averaging around $753.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from San Antonio to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $835. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,031. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $861 when looking at flights departing in the evening. Flights to London are more costly in the morning, with an average ticket price of $1,021. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from San Antonio when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to London for around $954 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Antonio for as low as $867 on momondo.

How have San Antonio to London flight prices changed over time?

As of April 2025, prices for San Antonio to London flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from San Antonio to London

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to London (SAT to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to London

Best Price Found

$273

Fastest flight time

11h 15m

Direct flights

None

Airports in London

5 airports
The best one-way flight to London from San Antonio in the past 72 hours is $273. The best round-trip flight deal from San Antonio to London found on momondo in the last 72 hours is $567.
The fastest flight from San Antonio to London takes 11h 15m
There are no direct flights from San Antonio to London. Popular non-direct routes for this connection are San Antonio Airport - London Gatwick Airport, San Antonio Airport - London Heathrow Airport and San Antonio Airport - London Stansted Airport.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

  • How far is San Antonio to London by plane?

    London is 4985.7 mi away from San Antonio. In terms of flight time, this usually takes a little over 11h 15m.

  • When did momondo last update prices for flights from San Antonio Airport to London?

    Prices for flights from San Antonio Airport to London refresh daily.

  • How many operators does momondo search for flights from San Antonio Airport to London?

  • How old do you have to be to fly from San Antonio Airport to London?

    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.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London 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. 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?


Best airlines flying from San Antonio to London

Compare and see reviews for airlines that fly from San Antonio to London with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $615Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $672Free CancellationRating
7.0
2,658 reviews
Search Iberia flights
United AirlinesPriceFrom $692Free CancellationRating
7.4
8,619 reviews
Search United Airlines flights
British AirwaysPriceFrom $703Free CancellationRating
6.6
6,718 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $745Free CancellationRating
7.4
637 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $778Free CancellationRating
8.0
7,897 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Croydon
Luton
Guildford
Hayes
Slough
Dartford
Stansted
Ilford
Dover
Canterbury
Colchester
Milton Keynes
Horley
Wembley
Chelmsford
Eastbourne
Southend-on-Sea
Hook

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to London?

It is quick and easy to find San Antonio to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from San Antonio to London with flexible booking policies on momondo?

All flight searches from San Antonio to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Antonio to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from San Antonio.

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 simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Antonio and alert you when they change.


An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Wed 4/9
Wed 4/16

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London