$355+ Cheap flights from San Antonio (SAT) to Heathrow (LHR)
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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
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.Cheapflights Tip: The best prices from San Antonio to London Heathrow are usually found in October or January, booked 60 days in advance, depart on a Thursday or Sunday and return on a Monday
Cheap 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 May 12, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $675 (United Airlines) |
One-way from | $355 (Mytrip) |
Popular in | June |
Cheapest in | October |
Average price | $912 |
Find flight deals from San Antonio to Heathrow
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 May 12, 2025.
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 May 12, 2025.
This United Airlines deal was found by Cheapflights users on 5/12. 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.
This United deal was found by Cheapflights users on 5/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This CheapOair deal was found by Cheapflights users on 5/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Scandinavian Airlines deal was found by Cheapflights users on 5/12. 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.
This Cheapflightsfares deal was found by Cheapflights users on 5/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 5/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 5/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Virgin Atlantic deal was found by Cheapflights users on 5/12. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 2,558,603 searches. Data last updated May 12, 2025.
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
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 9/12
12:10 pm-6:45 am
1 stop12h 35m
London Heathrow
Fri 9/26
2:05 pm-11:35 am
2 stops27h 30m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 8/15
6:45 am-11:45 am
1 stop23h 00m
London Heathrow
Mon 8/25
6:40 pm-8:33 pm
2 stops31h 53m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 8/12
5:30 am-6:30 am
2 stops19h 00m
London Heathrow
Sat 8/23
8:30 am-12:01 pm
2 stops33h 31m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Mon 9/15
12:10 pm-4:00 pm
2 stops21h 50m
London Heathrow
Wed 10/15
6:40 am-11:21 pm
2 stops22h 41m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 8/19
5:10 pm-10:50 am
1 stop11h 40m
London Heathrow
Thu 8/28
3:10 pm-10:44 pm
1 stop13h 34m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Tue 8/19
2:40 pm-10:50 am
1 stop14h 10m
London Heathrow
Thu 8/28
11:30 am-10:56 pm
2 stops17h 26m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Fri 9/5
5:15 pm-4:40 pm
2 stops17h 25m
London Heathrow
Mon 9/15
7:30 pm-10:58 pm
2 stops33h 28m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 9/27
12:10 pm-11:25 am
1 stop17h 15m
London Heathrow
Sat 10/4
11:30 am-11:18 pm
2 stops17h 48m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Thu 7/10
6:35 pm-11:55 am
2 stops35h 20m
San AntonioLondon
SAT - LHR
SATLHR
San Antonio
Sat 11/8
5:00 pm-7:10 am
2 stops32h 10m
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Antonio-London Heathrow Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.
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 round-trip flight from San Antonio to Heathrow. Price data was last updated on May 9, 2025.
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 60 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, November is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of $661). Flying from San Antonio to London Heathrow Airport in June is currently the most expensive (average of $1,100). 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 May 12, 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 noon, which can drop the price by up to 14% versus a flight in the evening.
What is the cheapest day to fly from San Antonio to London Heathrow Airport?
Use this chart to determine the cheapest time to fly round-trip from San Antonio to Heathrow. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their San Antonio to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in Heathrow by month
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
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 May 12, 2025.
Read through reviews of airlines operating flights from San Antonio to London, such as Delta, United Airlines and Scandinavian Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Crew
Food
Overall
Reviews
Kim,May 2025
PIH - SLC
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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Alternative routes for San Antonio to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Antonio to Heathrow
Discover the top 6 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 2,558,603 searches. Data last updated May 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$672 | Average$920 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$692 | Average$909 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$702 | Average$914 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$703 | Average$1,063 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$704 | Average$980 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$715 | Average$1,077 | FlexibilityNo cancel fee | On-time72% |