Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to London from $281

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 8/26. 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
1 adult, Economy, 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.
Search flight deals

Find the cheapest flights from San Antonio to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
12:15 pm - 9:20 am
SAT
-
LHR
39h 05m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$673Scandinavian Airlines
Fri, Sep 4 - Mon, Sep 7
Lufthansa Logo
5:18 pm - 4:40 pm
SAT
-
LHR
17h 22m
2 stops
Lufthansa Logo
6:30 am - 11:08 pm
LHR
-
SAT
22h 38m
2 stops
$759Lufthansa
Mon, Jul 27 - Tue, Oct 20
Scandinavian Airlines Logo
2:10 pm - 9:20 am
SAT
-
LHR
37h 10m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$761Scandinavian Airlines
Fri, Aug 21 - Sat, Aug 29
Scandinavian Airlines Logo
12:10 pm - 9:20 am
SAT
-
LHR
39h 10m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$762Scandinavian Airlines
Wed, Aug 19 - Mon, Aug 31
Scandinavian Airlines Logo
12:10 pm - 9:20 am
SAT
-
LHR
39h 10m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$763Scandinavian Airlines
Wed, Aug 19 - Mon, Aug 31
Scandinavian Airlines Logo
2:10 pm - 5:40 pm
SAT
-
LHR
21h 30m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$774Scandinavian Airlines
Thu, Aug 20 - Wed, Sep 2
Lufthansa Logo
12:07 pm - 12:40 pm
SAT
-
LHR
18h 33m
2 stops
Lufthansa Logo
6:30 pm - 9:16 pm
LHR
-
SAT
32h 46m
2 stops
$776Lufthansa
Wed, Aug 12 - Wed, Aug 19
Lufthansa Logo
11:50 am - 10:40 am
SAT
-
LHR
16h 50m
2 stops
Lufthansa Logo
6:30 pm - 9:16 pm
LHR
-
SAT
32h 46m
2 stops
$777Lufthansa
Wed, Aug 12 - Wed, Aug 19
Lufthansa Logo
5:24 pm - 8:40 pm
SAT
-
LHR
21h 16m
2 stops
Lufthansa Logo
7:30 pm - 9:16 pm
LHR
-
SAT
31h 46m
2 stops
$778Lufthansa
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
9:37 am - 10:00 am
SAT
-
LHR
18h 23m
3 stops
Multiple Airlines Logo
7:25 am - 9:13 pm
LHR
-
SAT
19h 48m
2 stops
$782Multiple Airlines
Wed, Aug 12 - Wed, Aug 19

Iberia flights from San Antonio to London Heathrow Airport

Our best Iberia deals on San Antonio to London Heathrow Airport flight tickets
Iberia
Apr 29
SAT4:28 pmSan Antonio
13h 42m
1 stop
LHR12:10 pmLondon Heathrow
May 6
LHR11:30 amLondon Heathrow
17h 21m
2 stops
SAT10:51 pmSan Antonio
$827
Iberia
Apr 13
SAT1:32 pmSan Antonio
12h 33m
1 stop
LHR8:05 amLondon Heathrow
Apr 20
LHR8:00 pmLondon Heathrow
32h 52m
2 stops
SAT10:52 pmSan Antonio
$838
Iberia
Apr 27
SAT1:19 pmSan Antonio
12h 21m
1 stop
LHR7:40 amLondon Heathrow
May 4
LHR7:10 pmLondon Heathrow
33h 42m
2 stops
SAT10:52 pmSan Antonio
$839

Scandinavian Airlines flights from San Antonio to London Heathrow Airport

Our best Scandinavian Airlines deals on San Antonio to London Heathrow Airport flight tickets
Scandinavian Airlines
Sep 4
SAT12:15 pmSan Antonio
39h 05m
2 stops
LHR9:20 amLondon Heathrow
Sep 7
LHR6:40 amLondon Heathrow
22h 38m
2 stops
SAT11:18 pmSan Antonio
$673
Scandinavian Airlines
Aug 21
SAT2:10 pmSan Antonio
37h 10m
2 stops
LHR9:20 amLondon Heathrow
Aug 29
LHR6:40 amLondon Heathrow
22h 38m
2 stops
SAT11:18 pmSan Antonio
$761
Scandinavian Airlines
Aug 19
SAT12:10 pmSan Antonio
39h 10m
2 stops
LHR9:20 amLondon Heathrow
Aug 31
LHR6:40 amLondon Heathrow
22h 38m
2 stops
SAT11:18 pmSan Antonio
$762

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated March 16, 2026.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 9/4

12:15 pm-9:20 am

2 stops39h 05m

London Heathrow

Mon 9/7

6:40 am-11:18 pm

2 stops22h 38m

$673

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 7/27

5:18 pm-4:40 pm

2 stops17h 22m

London Heathrow

Tue 10/20

6:30 am-11:08 pm

2 stops22h 38m

$759

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 8/21

2:10 pm-9:20 am

2 stops37h 10m

London Heathrow

Sat 8/29

6:40 am-11:18 pm

2 stops22h 38m

$761

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/19

12:10 pm-9:20 am

2 stops39h 10m

London Heathrow

Mon 8/31

6:40 am-11:18 pm

2 stops22h 38m

$762

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/19

12:10 pm-9:20 am

2 stops39h 10m

London Heathrow

Mon 8/31

6:40 am-11:18 pm

2 stops22h 38m

$763

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 8/20

2:10 pm-5:40 pm

2 stops21h 30m

London Heathrow

Wed 9/2

6:40 am-11:18 pm

2 stops22h 38m

$774

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/12

12:07 pm-12:40 pm

2 stops18h 33m

London Heathrow

Wed 8/19

6:30 pm-9:16 pm

2 stops32h 46m

$776

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/12

11:50 am-10:40 am

2 stops16h 50m

London Heathrow

Wed 8/19

6:30 pm-9:16 pm

2 stops32h 46m

$777

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/12

5:24 pm-8:40 pm

2 stops21h 16m

London Heathrow

Wed 8/19

7:30 pm-9:16 pm

2 stops31h 46m

$778
Quickest round-trip

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 8/12

9:37 am-10:00 am

3 stops18h 23m

London Heathrow

Wed 8/19

7:25 am-9:13 pm

2 stops19h 48m

$782

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Antonio, with most prices found around $628. If you’re not able to fly to London Heathrow Airport in October, then February is your next best option. Flight prices from San Antonio to London Heathrow Airport during February average around $656.

How far in advance should I book a flight 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 $872 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 $629 on momondo.

Can stopping save me money on San Antonio to London Heathrow Airport flights?

You could potentially save up to 36% 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?

As of March 2026, prices for San Antonio to London Heathrow Airport flights are approximately 8% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to London Heathrow Airport

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

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

Fastest flight time

13h 17m

Direct flights

None
The fastest flight from San Antonio to London Heathrow Airport takes 13h 17m
There are no direct flights from San Antonio to London Heathrow Airport. There are no popular flight routes from San Antonio to London Heathrow Airport.
Search flight deals

  • How far is San Antonio to London Heathrow by plane?

    There are 4973.6 mi between San Antonio and London Heathrow. 13h 17m 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?

  • 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?

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
DeltaPriceFrom $530Free CancellationRating
7.9
8,289 reviews
Search Delta flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
9,431 reviews
Search United Airlines flights
British AirwaysPriceFrom $556Free CancellationRating
6.7
7,797 reviews
Search British Airways flights
American AirlinesPriceFrom $571Free CancellationRating
7.1
11,467 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom $600Free CancellationRating
7.5
682 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $672Free CancellationRating
7.0
3,137 reviews
Search Iberia flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Crawley
Stratford-upon-Avon
Wembley
Hayes
Dartford
Croydon
Harrow
Watford
Brentwood
Guildford
Stansted
Cobham
Folkestone
Romford

Why use momondo?

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.

An easier way to manage your London Heathrow Airport 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 4/15
Wed 4/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Gatwick Airportfrom $394
Flights to London City Airportfrom $585
Flights to London Stansted Airportfrom $422
Flights to London Luton Airportfrom $453
Flights to Glasgow Intl Airportfrom $489
Flights to Belfast Intl Airportfrom $643
Flights to London Southend Airportfrom $612
Flights to Belfast City Airportfrom $711