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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
9 Jan — 16 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 10 December 2025.
Sat 27/1219:04SAT - LHR
1 stop33h 11mUnited Airlines
Thu 8/113:25LHR - SAT
2 stops39h 50mUnited Airlines
Deal found 9/12£664
Fri 12/1212:08SAT - LHR
1 stop12h 32mLufthansa
Wed 17/1212:05LHR - SAT
1 stop15h 27mLufthansa
Deal found 8/12£684
Fri 12/1206:25SAT - LHR
1 stop18h 40mDelta
Wed 17/1211:05LHR - SAT
1 stop16h 14mDelta
Deal found 8/12£686
Fri 12/1207:21SAT - LHR
1 stop17h 59mBritish Airways
Wed 17/1206:15LHR - SAT
2 stops21h 45mBritish Airways
Deal found 8/12£694
Sat 27/1215:00SAT - LHR
1 stop11h 35mMultiple Airlines
Thu 8/114:10LHR - SAT
1 stop14h 32mMultiple Airlines
Deal found 8/12£765
Wed 17/1208:00SAT - LHR
1 stop17h 50mDelta
Wed 24/1206:30LHR - SAT
2 stops21h 23mDelta
Deal found 10/12£779
Wed 17/1214:12SAT - LHR
1 stop11h 43mUnited Airlines
Wed 24/1210:00LHR - SAT
1 stop15h 41mUnited Airlines
Deal found 10/12£788
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 10 December 2025.
Fri 16/116:40SAT - LHR
1 stop18h 10mVirgin Atlantic
Fri 23/106:30LHR - SAT
2 stops16h 52mVirgin Atlantic
Deal found 8/12£472
Mon 9/313:37SAT - LHR
1 stop11h 48mDelta
Wed 18/308:40LHR - SAT
2 stops19h 02mDelta
Deal found 9/12£472
Wed 11/213:40SAT - LHR
1 stop13h 20mKLM
Wed 18/212:30LHR - SAT
1 stop18h 04mKLM
Deal found 10/12£492
Wed 7/112:25SAT - LHR
1 stop13h 25mDelta
Wed 14/108:40LHR - SAT
2 stops20h 15mDelta
Deal found 8/12£472
Wed 21/113:40SAT - LHR
2 stops15h 10mVirgin Atlantic
Wed 28/106:30LHR - SAT
2 stops16h 52mVirgin Atlantic
Deal found 9/12£475
Wed 7/112:25SAT - LHR
1 stop12h 25mKLM
Wed 14/110:45LHR - SAT
1 stop15h 58mKLM
Deal found 8/12£492
Sat 24/108:00SAT - LHR
1 stop16h 25mDelta
Sat 31/108:40LHR - SAT
2 stops20h 15mDelta
Deal found 9/12£472
Thu 15/113:40SAT - LHR
2 stops15h 10mVirgin Atlantic
Thu 22/106:30LHR - SAT
2 stops16h 52mVirgin Atlantic
Deal found 8/12£475
Wed 11/208:00SAT - LHR
2 stops16h 55mDelta
Wed 18/208:40LHR - SAT
2 stops18h 57mDelta
Deal found 8/12£475
Last-minute flights from San Antonio to Heathrow
Discover last-minute flight deals from San Antonio to Heathrow. Data last updated 10 December 2025 and is based on user searches.
Wed 7/106:04SAT - LHR
1 stop22h 21mBritish Airways
Wed 14/110:05LHR - SAT
1 stop17h 47mBritish Airways
Deal found 8/12£543
Wed 7/114:05SAT - LHR
1 stop11h 50mUnited Airlines
Wed 14/110:00LHR - SAT
1 stop13h 31mUnited Airlines
Deal found 10/12£544
Thu 15/112:25SAT - LHR
1 stop13h 25mDelta
Thu 22/108:40LHR - SAT
2 stops17h 45mDelta
Deal found 9/12£472
Thu 15/112:25SAT - LHR
1 stop12h 25mKLM
Thu 22/108:55LHR - SAT
1 stop14h 27mKLM
Deal found 9/12£492
Thu 15/106:30SAT - LHR
3 stops20h 45mMultiple Airlines
Thu 22/108:50LHR - SAT
3 stops21h 02mMultiple Airlines
Deal found 8/12£550
Wed 21/106:30SAT - LHR
3 stops20h 35mMultiple Airlines
Wed 28/108:50LHR - SAT
3 stops21h 02mMultiple Airlines
Deal found 9/12£536
Fri 23/116:29SAT - LHR
1 stop13h 11mVirgin Atlantic
Fri 30/108:55LHR - SAT
1 stop14h 27mVirgin Atlantic
Deal found 9/12£464
Fri 23/112:55SAT - LHR
1 stop13h 10mAir France
Fri 30/106:20LHR - SAT
2 stops24h 18mAir France
Deal found 9/12£470
Fri 23/106:30SAT - LHR
2 stops19h 20mMultiple Airlines
Fri 30/106:20LHR - SAT
2 stops24h 18mMultiple Airlines
Deal found 9/12£491
Sat 24/108:00SAT - LHR
2 stops26h 00mScandinavian Airlines
Sat 31/106:40LHR - SAT
2 stops23h 58mScandinavian Airlines
Deal found 9/12£474
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 10 December 2025.
Wed 25/315:08SAT - LHR
1 stop12h 07mIberia
Deal found 9/12£167
Wed 25/310:46SAT - LHR
2 stops15h 09mDelta
Deal found 9/12£245
Thu 8/119:14SAT - LHR
3 stops40h 16mMultiple Airlines
Deal found 10/12£248
Fri 23/110:35SAT - LHR
3 stops26h 20mMultiple Airlines
Deal found 9/12£258
Tue 6/115:55SAT - LHR
3 stops58h 35mMultiple Airlines
Deal found 10/12£280
Wed 8/406:30SAT - LHR
3 stops23h 25mMultiple Airlines
Deal found 10/12£331
Wed 7/107:06SAT - LHR
2 stops18h 49mUnited Airlines
Deal found 10/12£351
Sat 24/114:05SAT - LHR
2 stops35h 05mUnited Airlines
Deal found 10/12£354
Thu 8/114:10SAT - LHR
1 stop11h 20mLufthansa
Deal found 10/12£363
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 10 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 10 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
Fri 16/1
16:40-16:50
1 stop18h 10m
London Heathrow
Fri 23/1
06:30-17:22
2 stops16h 52m
£472
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 9/3
13:37-06:25
1 stop11h 48m
London Heathrow
Wed 18/3
08:40-22:42
2 stops19h 02m
£472
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 7/1
12:25-07:50
1 stop13h 25m
London Heathrow
Wed 14/1
08:40-22:55
2 stops20h 15m
£472
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 24/1
08:00-06:25
1 stop16h 25m
London Heathrow
Sat 31/1
08:40-22:55
2 stops20h 15m
£472
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 21/1
13:40-10:50
2 stops15h 10m
London Heathrow
Wed 28/1
06:30-17:22
2 stops16h 52m
£475
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 15/1
13:40-10:50
2 stops15h 10m
London Heathrow
Thu 22/1
06:30-17:22
2 stops16h 52m
£475
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 11/2
08:00-06:55
2 stops16h 55m
London Heathrow
Wed 18/2
08:40-21:37
2 stops18h 57m
£475
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 11/2
13:40-09:00
1 stop13h 20m
London Heathrow
Wed 18/2
12:30-00:34
1 stop18h 04m
£492
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 7/1
12:25-06:50
1 stop12h 25m
London Heathrow
Wed 14/1
10:45-20:43
1 stop15h 58m
£492
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Wed 25/3
15:08-08:15
1 stop12h 07m
£167
Flights are sorted by cheapest return flights first.
Deals found on 9/12
Showing 1-10 of 19 results
1
2
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 5 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 £396). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £627). 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 10 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.
How much does it cost for a return flight from San Antonio to London Heathrow Airport?
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 11h 48m. Delta provides one of the quickest options available for as low as £472. 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 £396). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of £627). 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 10 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.