Cheap flights from San Antonio to London Heathrow Airport from £167
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
12 Jan — 19 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Antonio to London Heathrow are usually found in October or August, booked 75 days in advance, depart on a Monday or Tuesday and return on a Saturday
Cheap flight deals from San Antonio to Heathrow
Enter your travel dates to find the best prices.
Cheapest flights from San Antonio to Heathrow
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 13 December 2025.
Sat 27/1219:04SAT - LHR
1 stop33h 11mUnited Airlines
Thu 8/113:25LHR - SAT
2 stops39h 50mUnited Airlines
Deal found 13/12£611
Fri 12/1214:12SAT - LHR
2 stops25h 08mUnited Airlines
Tue 16/1207:25LHR - SAT
1 stop35h 03mUnited Airlines
Deal found 12/12£682
Sat 27/1214:08SAT - LHR
2 stops35h 02mAir Canada
Thu 8/113:00LHR - SAT
2 stops30h 08mAir Canada
Deal found 13/12£718
Fri 12/1218:05SAT - LHR
1 stop11h 35mMultiple Airlines
Tue 16/1208:20LHR - SAT
1 stop14h 48mMultiple Airlines
Deal found 12/12£734
Tue 16/1214:22SAT - LHR
1 stop11h 08mMultiple Airlines
Tue 6/117:50LHR - SAT
2 stops33h 06mMultiple Airlines
Deal found 12/12£780
Fri 19/1216:05SAT - LHR
2 stops55h 50mMultiple Airlines
Fri 9/112:00LHR - SAT
2 stops17h 15mMultiple Airlines
Deal found 13/12£815
Best flights from San Antonio to Heathrow
Discover carefully curated flight deals from San Antonio to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 December 2025.
Wed 11/209:00SAT - LHR
1 stop20h 15mLufthansa
Wed 18/206:30LHR - SAT
2 stops22h 42mLufthansa
Deal found 12/12£453
Fri 9/111:43SAT - LHR
2 stops15h 27mUnited Airlines
Fri 23/106:35LHR - SAT
2 stops20h 09mUnited Airlines
Deal found 12/12£469
Sat 14/210:57SAT - LHR
1 stop13h 28mDelta
Sun 22/211:45LHR - SAT
2 stops18h 49mDelta
Deal found 12/12£470
Mon 26/116:29SAT - LHR
1 stop13h 11mVirgin Atlantic
Mon 2/206:30LHR - SAT
2 stops16h 52mVirgin Atlantic
Deal found 11/12£470
Tue 17/210:57SAT - LHR
1 stop14h 53mDelta
Thu 26/206:30LHR - SAT
2 stops19h 55mDelta
Deal found 11/12£470
Fri 30/112:55SAT - LHR
1 stop12h 00mDelta
Sat 28/208:40LHR - SAT
2 stops20h 15mDelta
Deal found 12/12£470
Fri 16/106:30SAT - LHR
1 stop18h 35mDelta
Tue 20/111:45LHR - SAT
2 stops18h 53mDelta
Deal found 12/12£470
Thu 12/208:00SAT - LHR
2 stops18h 45mDelta
Sun 15/206:30LHR - SAT
2 stops21h 07mDelta
Deal found 12/12£473
Wed 21/114:42SAT - LHR
2 stops14h 58mDelta
Sun 25/108:40LHR - SAT
2 stops18h 54mDelta
Deal found 12/12£473
Wed 11/208:00SAT - LHR
2 stops18h 05mDelta
Wed 18/206:30LHR - SAT
2 stops16h 57mDelta
Deal found 11/12£473
Sun 25/108:00SAT - LHR
2 stops16h 55mDelta
Sun 1/208:40LHR - SAT
2 stops18h 54mDelta
Deal found 11/12£473
Last-minute flights from San Antonio to Heathrow
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated 13 December 2025 and is based on user searches.
Fri 19/1216:05SAT - LHR
2 stops55h 50mMultiple Airlines
Fri 9/112:00LHR - SAT
2 stops17h 15mMultiple Airlines
Deal found 13/12£815
Fri 19/1216:39SAT - LHR
1 stop11h 21mMultiple Airlines
Mon 29/1216:30LHR - SAT
1 stop13h 21mMultiple Airlines
Deal found 12/12£1,050
Fri 19/1216:05SAT - LHR
1 stop12h 10mLufthansa
Fri 9/112:05LHR - SAT
1 stop14h 51mLufthansa
Deal found 13/12£1,131
Sun 21/1216:06SAT - LHR
2 stops15h 39mDelta
Fri 9/113:00LHR - SAT
1 stop15h 55mDelta
Deal found 13/12£929
Sun 21/1217:48SAT - LHR
1 stop33h 27mBritish Airways
Fri 9/111:45LHR - SAT
1 stop18h 13mBritish Airways
Deal found 13/12£940
Sun 21/1220:19SAT - LHR
1 stop33h 21mMultiple Airlines
Fri 9/114:45LHR - SAT
1 stop15h 13mMultiple Airlines
Deal found 11/12£995
Sun 21/1209:51SAT - LHR
1 stop18h 24mUnited Airlines
Fri 9/113:25LHR - SAT
2 stops31h 25mUnited Airlines
Deal found 12/12£1,067
Sun 21/1214:13SAT - LHR
1 stop11h 17mLufthansa
Fri 9/112:05LHR - SAT
1 stop14h 51mLufthansa
Deal found 12/12£1,078
Sun 21/1208:45SAT - LHR
2 stops16h 25mAir Canada
Fri 9/113:25LHR - SAT
2 stops25h 17mAir Canada
Deal found 11/12£1,087
One-way flights from San Antonio to Heathrow
Search for one-way flight options from San Antonio to Heathrow. Find affordable one-way fares based on user searches. Data last updated 13 December 2025.
Sun 12/414:39SAT - LHR
1 stop11h 26mAmerican Airlines
Deal found 11/12£167
Sun 12/406:15SAT - LHR
2 stops20h 50mAer Lingus
Deal found 11/12£253
Sun 12/413:51SAT - LHR
3 stops40h 14mMultiple Airlines
Deal found 11/12£300
Tue 13/108:30SAT - LHR
2 stops16h 40mAir Canada
Deal found 11/12£352
Tue 13/113:20SAT - LHR
1 stop14h 20mLufthansa
Deal found 11/12£364
Sun 3/506:00SAT - LHR
3 stops29h 40mMultiple Airlines
Deal found 12/12£407
Fri 2/106:00SAT - LHR
1 stop19h 05mDelta
Deal found 11/12£453
Thu 18/1216:39SAT - LHR
1 stop11h 21mAmerican Airlines
Deal found 12/12£661
Thu 18/1214:40SAT - LHR
2 stops15h 00mDelta
Deal found 12/12£729
Fri 2/116:05SAT - LHR
2 stops20h 40mLufthansa
Deal found 13/12£747
Fri 2/113:34SAT - LHR
2 stops23h 16mIberia
Deal found 11/12£759
Thu 18/1205:10SAT - LHR
3 stops46h 00mMultiple Airlines
Deal found 12/12£793
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 13 December 2025.
Customise 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 858,174 searches. Data last updated 13 December 2025.
Use the filters below to find and compare flights from San Antonio to London Heathrow Airport that are best for you.
Fly from
San Antonio
Fly to
Heathrow
Route
Depart
Return
Price
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 11/2
09:00-11:15
1 stop20h 15m
London Heathrow
Wed 18/2
06:30-23:12
2 stops22h 42m
£453
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 9/1
11:43-09:10
2 stops15h 27m
London Heathrow
Fri 23/1
06:35-20:44
2 stops20h 09m
£469
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 14/2
10:57-06:25
1 stop13h 28m
London Heathrow
Sun 22/2
11:45-00:34
2 stops18h 49m
£470
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 26/1
16:29-11:40
1 stop13h 11m
London Heathrow
Mon 2/2
06:30-17:22
2 stops16h 52m
£470
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 17/2
10:57-07:50
1 stop14h 53m
London Heathrow
Thu 26/2
06:30-20:25
2 stops19h 55m
£470
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 30/1
12:55-06:55
1 stop12h 00m
London Heathrow
Sat 28/2
08:40-22:55
2 stops20h 15m
£470
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 16/1
06:30-07:05
1 stop18h 35m
London Heathrow
Tue 20/1
11:45-00:38
2 stops18h 53m
£470
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 12/2
08:00-08:45
2 stops18h 45m
London Heathrow
Sun 15/2
06:30-21:37
2 stops21h 07m
£473
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 21/1
14:42-11:40
2 stops14h 58m
London Heathrow
Sun 25/1
08:40-21:34
2 stops18h 54m
£473
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 11/2
08:00-08:05
2 stops18h 05m
London Heathrow
Wed 18/2
06:30-17:27
2 stops16h 57m
£473
Flights are sorted by cheapest return flights first.
Deals found on 11/12
Showing 1-10 of 21 results
1
2
3
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.
Estimated return 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?
Use this chart to determine the optimal time to book a return flight from San Antonio to Heathrow. Price data was last updated on 12 December 2025.
The price you pay for your flight from San Antonio to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £394). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £624). 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.
What is the cheapest time of day to fly from SAT to LHR?
Find hourly flight availability from San Antonio to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 December 2025.
When flying from San Antonio to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 10% versus a flight in the evening.
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.
What airport do you fly from for flights from San Antonio to London Heathrow?
San Antonio (SAT), located 7.6 mi from the city center, is the airport you fly out of when you book flights from San Antonio to London Heathrow. 0 airlines have flights from San Antonio to London Heathrow on a regular basis. Booking flights from San Antonio to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.
How long is the flight from San Antonio to London Heathrow Airport?
A quick flight from San Antonio to London Heathrow Airport can take about 13h 28m. Lufthansa provides one of the quickest options available for as low as £470. The distance from San Antonio to London Heathrow Airport is about 4967 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from San Antonio to Heathrow that include hotel bookings?
Yes. In addition to deals on San Antonio to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Antonio to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Heathrow.
Can I find deals for business class flights from San Antonio to Heathrow?
Yes. Cheapflights offers flight deals from San Antonio to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Antonio to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £394). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £624). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 13 December 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Antonio to Heathrow?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Antonio to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from San Antonio to Heathrow?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Antonio to Heathrow for you. Better yet — we are completely free to use.
Can Cheapflights find flights from San Antonio to Heathrow with no change fees?
Yes! Cheapflights helps users easily find flights from San Antonio to Heathrow with no change fees.
Can Cheapflights notify me if prices for flights from San Antonio to Heathrow become cheaper?
Yes, Cheapflights offers price alerts on San Antonio to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.