$425+ Cheap flights from San Antonio (SAT) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
Dec 12 — Dec 191
Round-trip
1 adult, Economy
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Find cheap flights from San Antonio to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Antonio to Heathrow
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Best
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Cheapest flights from San Antonio to HeathrowExplore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2026.
Explore the most affordable flight options available from San Antonio to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2026.
This Iberia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/811:23 am -
1 stop16h 37m
Tue 12/157:30 am -
2 stops19h 29m
Deal found 11/10![Iberia logo]()
$920
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/91:40 pm -
1 stop12h 15m
Mon 12/141:45 pm -
2 stops39h 07m
Deal found 11/10![United Airlines logo]()
$922
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:45 am -
2 stops15h 55m
Tue 12/159:00 am -
2 stops19h 52m
Deal found 11/8![United Airlines logo]()
$923
This Iberia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:45 pm -
1 stop13h 40m
Thu 1/147:30 am -
2 stops19h 27m
Deal found 11/10![Iberia logo]()
$924
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:00 am -
1 stop19h 05m
Wed 1/1310:00 am -
2 stops20h 45m
Deal found 11/10![Delta logo]()
$927
This Justfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:50 pm -
2 stops21h 15m
Wed 12/168:30 am -
2 stops18h 19m
Deal found 11/9![Lufthansa logo]()
$931
Best flights from San Antonio to HeathrowDiscover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 12, 2026.
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 12, 2026.
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:45 am -
2 stops15h 55m
Tue 12/159:00 am -
2 stops19h 52m
Deal found 11/8![United Airlines logo]()
$923
This Scandinavian Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/272:12 pm -
3 stops22h 38m
Wed 2/310:20 am -
2 stops19h 24m
Deal found 11/11![Scandinavian Airlines logo]()
$927
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/307:00 am -
1 stop17h 25m
Thu 1/146:30 am -
2 stops21h 03m
Deal found 11/8![Delta logo]()
$928
This British Airways deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/65:26 pm -
1 stop12h 44m
Wed 1/278:20 am -
1 stop14h 10m
Deal found 11/11![British Airways logo]()
$971
This Delta deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:09 am -
2 stops15h 51m
Wed 1/136:30 am -
2 stops19h 51m
Deal found 11/7![Delta logo]()
$936
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/69:35 am -
1 stop16h 05m
Mon 1/1112:05 pm -
1 stop14h 52m
Deal found 11/11![United Airlines logo]()
$1,021
This Delta deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/712:59 pm -
1 stop12h 16m
Wed 12/1610:50 am -
2 stops18h 07m
Deal found 11/9![Delta logo]()
$959
This United Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:59 am -
2 stops15h 41m
Mon 1/1812:05 pm -
1 stop13h 13m
Deal found 11/7![United Airlines logo]()
$1,022
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:40 am -
1 stop16h 45m
Mon 11/236:30 am -
2 stops17h 10m
Deal found 11/10![Delta logo]()
$1,024
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1411:47 am -
2 stops17h 03m
Mon 12/2112:05 pm -
1 stop15h 35m
Deal found 11/9![United Airlines logo]()
$1,078
Last-minute flights from San Antonio to HeathrowDiscover last-minute flight deals from San Antonio to Heathrow. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated November 12, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:50 pm -
2 stops21h 15m
Wed 12/168:30 am -
2 stops18h 19m
Deal found 11/9![Lufthansa logo]()
$931
This Iberia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/811:23 am -
1 stop16h 37m
Tue 12/157:30 am -
2 stops19h 29m
Deal found 11/10![Iberia logo]()
$920
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:45 am -
2 stops15h 55m
Tue 12/159:00 am -
2 stops19h 52m
Deal found 11/8![United Airlines logo]()
$923
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:45 am -
2 stops15h 55m
Mon 12/141:45 pm -
2 stops39h 07m
Deal found 11/10![United Airlines logo]()
$922
This Iberia deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:45 pm -
1 stop13h 40m
Thu 1/147:30 am -
2 stops19h 27m
Deal found 11/10![Iberia logo]()
$924
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:00 am -
1 stop19h 05m
Wed 1/1310:00 am -
2 stops20h 45m
Deal found 11/10![Delta logo]()
$927
One-way flights from San Antonio to HeathrowSearch for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
This Trip.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:47 pm -
3 stops42h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$425
This eDestinos deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:25 am -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Virgin Atlantic logo]()
$471
This Flysmarter deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:56 am -
2 stops16h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Air Canada logo]()
$479
This Booking.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:23 pm -
1 stop11h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![British Airways logo]()
$487
Find flight deals from San Antonio to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 12, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $810 (Justfly.com) |
One-way from | $425 (Trip.com) |
Popular in | June |
Cheapest in | March |
Average price | $1,020 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to Heathrow 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, Cheapflights users made 7,457,451 searches. Data last updated November 12, 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
Cheapest round-trip
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 11/17
8:56 am-7:10 am
2 stops16h 14m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$479
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
6:47 pm-10:50 am
3 stops34h 03m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$490
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
6:33 am-6:50 am
2 stops18h 17m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$498
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
6:33 am-7:05 am
1 stop18h 32m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$519
Quickest round-trip
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
1:50 pm-9:40 am
1 stop13h 50m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$525
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
9:41 am-7:10 am
2 stops15h 29m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$529
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Sat 12/12
9:18 am-7:20 am
1 stop16h 02m
London Heathrow
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$532
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Tue 12/8
8:45 am-6:40 am
2 stops15h 55m
London Heathrow
Tue 12/15
9:00 am-10:52 pm
2 stops19h 52m
$923
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Wed 1/27
2:12 pm-6:50 pm
3 stops22h 38m
London Heathrow
Wed 2/3
10:20 am-11:44 pm
2 stops19h 24m
$927
San AntonioLondon
SAT San Antonio - LHR London Heathrow
SATLHR
San Antonio
Wed 12/30
7:00 am-6:25 am
1 stop17h 25m
London Heathrow
Thu 1/14
6:30 am-9:33 pm
2 stops21h 03m
$928
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from San Antonio to Heathrow
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Heathrow in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Antonio-London Heathrow Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from San Antonio-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-London Heathrow Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Antonio to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Antonio with our price prediction graph.
SAT-LHR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Antonio to London Heathrow Airport
How far ahead should I book a flight from San Antonio to London Heathrow Airport?
To ensure you get the cheapest price possible for a flight from San Antonio to London Heathrow Airport, you should look to book at least 32 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?
Currently, March is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $892). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,282). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated November 12, 2026.
Peruse reviews from past customers who have flown with Delta,Virgin Atlantic, andUnited Airlines from San Antonio to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Antonio to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 12, 2026.
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Browse other San Antonio and Heathrow flight options. Last updated on November 12, 2026.
Other flights from San Antonio
Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on November 12, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from San Antonio to Heathrow
Discover the top 5 airlines that operate flights from San Antonio to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$596 | Average$858 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$646 | Average$821 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$653 | Average$1,113 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$724 | Average$988 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$892 | Average$1,205 | FlexibilityNo cancel fee | On-time71% |