SAT - LHR

$281 Find Cheap Flights from San Antonio to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Heathrow departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to London.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$747
Overall average: $731
Scandinavian Airlines
Mon 9/14Wed 9/23
SAT - LHR • 2 stops
Cheapest one-way
$281
Typical prices: $463-$498
Air Canada
Wed 8/26
SAT - LHR • 2 stops
Top airlines
Cheapest • from $747 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Antonio and Heathrow. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $675 (round-trip)
Shortest trip • 11h 36m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Antonio to Heathrow (SAT-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to Heathrow

Mon, Sep 14 - Wed, Sep 23
Scandinavian Airlines Logo
2:10 pm - 9:20 am
SAT
-
LHR
37h 10m
2 stops
Scandinavian Airlines Logo
7:30 pm - 10:15 pm
LHR
-
SAT
32h 45m
2 stops
$747Scandinavian Airlines
Fri, Aug 14 - Tue, Aug 18
Scandinavian Airlines Logo
2:10 pm - 9:20 am
SAT
-
LHR
37h 10m
2 stops
Scandinavian Airlines Logo
5:00 pm - 11:18 pm
LHR
-
SAT
36h 18m
2 stops
$759Scandinavian 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
5:00 pm - 11:18 pm
LHR
-
SAT
36h 18m
2 stops
$760Scandinavian Airlines
Fri, Aug 21 - Sat, Aug 29
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
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 pm - 11:18 pm
LHR
-
SAT
34h 38m
2 stops
$762Scandinavian Airlines
Thu, Aug 20 - Wed, Sep 2
Scandinavian Airlines Logo
12:15 pm - 5:40 pm
SAT
-
LHR
23h 25m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$772Scandinavian Airlines
Thu, Aug 20 - Wed, Sep 2
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
Wed, Aug 12 - Wed, Aug 19
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 19 - Mon, Aug 31
Scandinavian Airlines Logo
12:10 pm - 6:50 pm
SAT
-
LHR
24h 40m
3 stops
Scandinavian Airlines Logo
6:40 am - 11:18 pm
LHR
-
SAT
22h 38m
2 stops
$783Scandinavian Airlines
Wed, Aug 19 - Mon, Aug 31
Scandinavian Airlines Logo
12:10 pm - 6:50 pm
SAT
-
LHR
24h 40m
3 stops
Scandinavian Airlines Logo
7:05 am - 11:18 pm
LHR
-
SAT
22h 13m
3 stops
$787Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for San Antonio to Heathrow flights

Get data-powered insights and trends into flights from San Antonio to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Antonio to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Antonio to London Heathrow Airport is October, where tickets cost $628 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,285 and $1,058 respectively.

How far in advance should I book a flight from San Antonio to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Antonio to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Antonio to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$281
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 28% lower on average.
Flight from San Antonio to London Heathrow Airport

When to book flights from San Antonio to Heathrow

Are your dates flexible? Find out the best times to travel from San Antonio to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Antonio to London Heathrow Airport flights

  • What is the cheapest flight from San Antonio to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from San Antonio to London Heathrow Airport was $281 for a one-way ticket and $747 for a round-trip.

  • Do I need a passport to fly between San Antonio and London Heathrow Airport?

    Yes, you’ll need a passport to travel to London Heathrow Airport from San Antonio.

  • Which aircraft models fly most regularly from San Antonio to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Antonio to London Heathrow Airport?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between San Antonio and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to London Heathrow Airport from San Antonio?

    Dallas is the most popular layover city among KAYAK users traveling from San Antonio to London Heathrow Airport.

  • Which is the best airline for flights from San Antonio to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from San Antonio to London are Delta and Virgin Atlantic. With an average price for the route of $674 and an overall rating of 7.9, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $780 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from San Antonio to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from San Antonio is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from San Antonio to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Antonio to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8306 reviews
7.9Comfort
7.8Entertainment
8.1Boarding
7.2Food
8.5Crew
Airline reviews

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

10.0 ExcellentShirley, Mar 2026
LAX - ATL
Read more Delta reviews

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Delayed, toilets did not flush, pilot parked to far away from Gate

I like flying first class, and United has a nice one

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Good level of service. Comfortable airplane. However, security is always a hassle at LHR. I always try to avoid that airport at all cost if possible.

Everything smooth. The only thing is that my connecting flight in the US to my final destination was delayed. The time changed 4 times. For the rest, everything on time without issues

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

WiFi wasn’t available to economy until the end of the flight.

Very good staff members with sincere passion and responsibility in their job.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Everything you need to know for your flight from San Antonio to Heathrow

Information on your arrival and departure airports