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Cheap flights from San Antonio to London Heathrow Airport from £314

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — LHR
26 Feb — 5 Mar1
1 adult

The best prices from San Antonio to London Heathrow are usually found in October or January, booked 51 days in advance, depart on a Monday or Tuesday and return on a Saturday

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 21 February 2025.

Round-trip from

£566

One-way from

£314

Popular in

June

Cheapest in

October

Average price

£806
23/4-2/5
  • 23/4-2/5
  • 5 total stops
  • 35h 19m total
  • San Antonio to London
19/5
  • 19/5
  • 3 total stops
  • 35h 42m total
  • San Antonio to London
Highest demand for flights based on searches. 16% potential increase in price (£123 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£26 potential savings vs. average return price).
Average for round-trip flights in February 2025

Find flight deals from San Antonio to Heathrow

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 21 February 2025.

Wed 23/409:35SAT - LHR
3 stops18h 25mMultiple Airlines
Fri 2/512:05LHR - SAT
2 stops16h 54mMultiple Airlines
Deal found 20/2£566
Tue 25/207:00SAT - LHR
2 stops27h 00mScandinavian Airlines
Mon 3/306:40LHR - SAT
2 stops23h 04mScandinavian Airlines
Deal found 20/2£570
Sun 20/420:35SAT - LHR
1 stop11h 50mBritish Airways
Sat 3/512:00LHR - SAT
1 stop13h 43mBritish Airways
Deal found 20/2£573
Thu 13/307:00SAT - LHR
2 stops19h 10mUnited Airlines
Wed 19/315:00LHR - SAT
2 stops29h 18mUnited Airlines
Deal found 20/2£576
Thu 6/305:30SAT - LHR
1 stop18h 50mDelta
Tue 11/310:00LHR - SAT
2 stops19h 37mDelta
Deal found 20/2£578
Sun 6/416:52SAT - LHR
2 stops35h 08mAir Canada
Sat 19/412:40LHR - SAT
2 stops29h 32mAir Canada
Deal found 20/2£582
Thu 13/317:35SAT - LHR
1 stop18h 05mVirgin Atlantic
Wed 19/311:30LHR - SAT
2 stops18h 07mVirgin Atlantic
Deal found 20/2£586
Mon 24/314:20SAT - LHR
2 stops19h 25mLufthansa
Mon 7/419:30LHR - SAT
2 stops33h 29mLufthansa
Deal found 19/2£588
Fri 18/416:04SAT - LHR
1 stop14h 11mIberia
Sat 26/410:30LHR - SAT
1 stop16h 20mIberia
Deal found 20/2£611
Mon 10/314:32SAT - LHR
1 stop11h 48mFinnair
Sun 16/316:15LHR - SAT
2 stops32h 24mFinnair
Deal found 19/2£745
Sun 6/416:04SAT - LHR
2 stops14h 36mAer Lingus
Sat 12/421:10LHR - SAT
2 stops32h 48mAer Lingus
Deal found 20/2£761
Wed 8/1012:50SAT - LHR
1 stop14h 05mAir France
Tue 14/1009:20LHR - SAT
1 stop20h 54mAir France
Deal found 20/2£838

Find flights from San Antonio to Heathrow within your budget

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 21 February 2025.

Fly from

San Antonio

Fly to

Heathrow

Route

Depart

Return

Price

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 23/4

09:35-10:00

3 stops18h 25m

London Heathrow

Fri 2/5

12:05-22:59

2 stops16h 54m

£566

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 20/4

20:35-14:25

1 stop11h 50m

London Heathrow

Sat 3/5

12:00-19:43

1 stop13h 43m

£573

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 13/3

07:00-07:10

2 stops19h 10m

London Heathrow

Wed 19/3

15:00-15:18

2 stops29h 18m

£576

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 6/3

05:30-06:20

1 stop18h 50m

London Heathrow

Tue 11/3

10:00-00:37

2 stops19h 37m

£578

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Sun 6/4

16:52-10:00

2 stops35h 08m

London Heathrow

Sat 19/4

12:40-12:12

2 stops29h 32m

£582

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Thu 13/3

17:35-16:40

1 stop18h 05m

London Heathrow

Wed 19/3

11:30-00:37

2 stops18h 07m

£586

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 24/3

14:20-14:45

2 stops19h 25m

London Heathrow

Mon 7/4

19:30-22:59

2 stops33h 29m

£588

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Wed 7/5

12:10-21:40

2 stops27h 30m

London Heathrow

Wed 14/5

06:40-00:24

2 stops23h 44m

£597

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Fri 18/4

16:04-12:15

1 stop14h 11m

London Heathrow

Sat 26/4

10:30-20:50

1 stop16h 20m

£611

San AntonioLondon

SAT - LHR

SATLHR

San Antonio

Mon 10/3

14:32-07:20

1 stop11h 48m

London Heathrow

Sun 16/3

16:15-19:39

2 stops32h 24m

£745

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 21 results
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2
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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.

Travel insights for flights from San Antonio to Heathrow

Get recent, data-driven insights about flights from San Antonio to Heathrow including ideal travel times, pricing trends, and more.

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 14 February 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 51 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, January is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £112). Flying from San Antonio to London Heathrow Airport in August is currently the most expensive (average of £163). 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 21 February 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 morning.

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 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 21 February 2025.
Read reviews from past customers who have flown Delta, Finnair and Virgin Atlantic from San Antonio to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very Good

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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. 1 airline 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.

  • What are the cheapest airlines flying from San Antonio to London Heathrow Airport round-trip?

    British Airways, at £573, was found to be the cheapest airline from San Antonio to London Heathrow Airport.Alternate airlines flying return to your destination include United Airlines and Delta. British Airways is priced at 25% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Antonio to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at £366. United Airlines flights start at £383 while deals on British Airways start at £437 one-way.

  • 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, January is the cheapest month in which you can book a flight from San Antonio to London Heathrow Airport (average of £112). Flying from San Antonio to London Heathrow Airport in August is currently the most expensive (average of £163). 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.

See more FAQs

Travelling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
Deal
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Milton Keynes
Croydon
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Hayes
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Northampton
Wembley
Southend-on-Sea
Ipswich
Winchester
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Crawley
Southall
Watford

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from San Antonio to Heathrow

Discover the top airline 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 858,174 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£614Average£978FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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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.

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