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Cheap Flights from San Antonio to London

Browse current best options from San Antonio. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

San Antonio

RatePunk searches hundreds of travel sites at once for deals on flights to London

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from San Antonio to London

Explore current cheapest deals departing from San Antonio to London

Round trip

Sort by: Cheapest

December 6 - December 8

Cheapest

Best

SAT - London

$956

$755

Round trip

September 2 - September 9

SAT - London

$829

$793

Round trip

August 20 - August 25

SAT - London

$915

$801

Round trip

August 18 - August 27

SAT - London

$889

$801

Round trip

September 17 - September 27

SAT - London

$808

$805

Round trip

August 4 - August 18

SAT - London

$851

$812

Round trip

September 21 - September 26

SAT - London

$868

$833

Round trip

August 19 - August 26

SAT - London

$897

$834

Round trip

October 21 - October 27

SAT - London

$909

$835

Round trip

August 2 - August 24

Earliest

SAT - London

$833

$841

Round trip

Unlock all 500+ flight deals to London and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from San Antonio to London

Right now, 14% of recent fares from San Antonio to London are classified as a good price. Prices for cheap flights from San Antonio to London typically range from $576–$951, with a median of $785. Current fares are above the typical level, suggesting that prices are higher than the historical median for this route. New deals for this route appear almost daily, so setting up a price alert can help you track fluctuations.

When is the cheapest time to fly from San Antonio to London? The data indicates that January is typically the most affordable month, with a median fare of $524. Other cost-effective months include March, with a median fare of $572, and September, where the median fare is $591. Planning your trip during these months could lead to significant savings.

A typical journey from San Antonio to London takes approximately 25h 16m, including connections. This is a long-haul route, covering a distance of 8023 km. Most itineraries connect at least once, with the median number of stopovers for connecting flights being 2. There are currently no direct flights from San Antonio to London, so all travel will involve at least one stop.

How much is a round trip from San Antonio to London

Regular price: $786 - $1,510

Prices for flights from San Antonio to London are currently below the regular range.

The regular price range for flights from San Antonio to London is between $786 and $1510. The current lowest deal is $755 on Kayak, for travel from Dec 6-Dec 8.

now $755

Low $786

High $1,510

The cheapest time to fly from San Antonio to London

The cheapest month to fly from San Antonio to London is January, with a median price of $524. The most expensive month is October, with a median price of $951. Prices are generally lower from January to December.

January

Cheapest

Flights from $524

October

Most Expensive

Flights from $951

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Antonio to London

Frontier Airlines

United Airlines

Iberia Airlines

Air Canada

Last-minute flights going from San Antonio to London

Thu, Jun 25

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LHR)

Air Canada

$1,199

$1,065

One-way

Tue, Jul 7

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,019

$882

One-way

Wed, Jul 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,033

$902

One-way

Wed, Jul 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,077

$967

One-way

Thu, Jul 9

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,069

$942

One-way

Sun, Jul 12

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Breeze Airways

$1,049

$951

One-way

Biggest price drops on these dates for flights from San Antonio to London

2 nights

Dec 6 - Dec 8

$956 → $755

21%

5 nights

Jul 16 - Jul 21

$1,013 → $875

14%

6 nights

Jul 7 - Jul 13

$1,019 → $882

13%

3 nights

Jun 25 - Jun 28

$1,199 → $1,065

11%

Popular Airports to fly from San Antonio to London

San Antonio - London route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from San Antonio to London are above the typical level at $755.

📅 Best time to fly

Fly in January for the best prices

Historically, January offers the lowest median price at $524 for San Antonio to London.

⏱️ Flight duration

Flights typically take 25h 16m

The median flight duration from San Antonio to London is 25 hours and 16 minutes.

✈️ Airlines & availability

Connecting flights are dominant

This route is connecting dominant, with a median of 2 stopovers for deals.

🏆 Airline highlight

Frontier Airlines offers deals

Frontier Airlines has historically offered 19 deals on connecting flights for this route.

🎯 Booking tip

Deals are frequent

Deals for flights from San Antonio to London are frequent, with over 1 per day.

San Antonio main airports to depart from

San Antonio International (SAT)

Cheapest

San Antonio International Airport is a convenient departure point for flights to London.

📍 ~15 km from San Antonio city center (reachable by car)

💸 Flights from ~$755

London main airports to arrive at

Heathrow (LHR)

Cheapest

Heathrow is a major international airport serving London, offering a wide range of flights from San Antonio.

📍 ~23 km from city center (reachable by public transport or car)

💸 Flights from ~$755

Gatwick (LGW)

Gatwick is a key London airport, providing another convenient option for flights from San Antonio.

📍 ~40 km from city center (reachable by public transport or car)

💸 Flights from ~$790

London City (LCY)

London City Airport offers a close-to-city arrival point for travelers from San Antonio.

📍 ~10 km from city center (reachable by public transport or car)

💸 Flights from ~$924

London Southend (SEN)

London Southend Airport is an alternative for flights from San Antonio, located further east of London.

📍 ~55 km from city center (reachable by public transport or car)

💸 Flights from ~$1085

London Stansted (STN)

London Stansted is a significant hub for flights to London, suitable for arrivals from San Antonio.

📍 ~50 km from city center (reachable by public transport or car)

💸 Flights from ~$841

Luton (LTN)

Luton Airport provides another option for reaching London from San Antonio.

📍 ~45 km from city center (reachable by public transport or car)

💸 Flights from ~$903

Airports nearby London used as alternative

Birmingham (BHX)

Cheapest

Birmingham Airport offers a wide variety of long-haul and short-haul destinations as an alternative.

📍 ~135 km from London (reachable by rail)

💸 Flights from ~$945

Southampton (SOU)

Southampton Airport is a close alternative with a direct rail link for faster security and boarding.

📍 ~100 km from London (reachable by rail)

💸 Flights from ~$969

Bristol (BRS)

Bristol Airport provides a large selection of low-cost carrier routes across Europe.

📍 ~170 km from London (reachable by coach or rail)

💸 Flights from ~$953

East Midlands (EMA)

East Midlands Airport has a strong presence of budget airlines offering competitive pricing.

📍 ~170 km from London (reachable by car)

💸 Flights from ~$1072

Bournemouth (BOH)

Bournemouth Airport is an alternative for travelers in South West London, offering a less crowded environment.

📍 ~145 km from London (reachable by car)

💸 Flights from ~$1190

Business & First Class Flight Deals to London

77% AI deal score

$2,285

From SAT

Elite

Aug 21

London, United Kingdom

77% AI deal score

$2,340

$2,305

Save $35

From SAT

Elite

Jul 23

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 23

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 23

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 24

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 24

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 24

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 25

London, United Kingdom

77% AI deal score

$2,850

$2,651

Save $199

From SAT

Elite

Jul 25

London, United Kingdom

77% AI deal score

$2,854

$2,651

Save $203

From SAT

Elite

Jul 17

London, United Kingdom

76% AI deal score

$7,242

$6,211

Save $1,031

From SAT

Elite

Aug 07

London, United Kingdom

76% AI deal score

$2,422

From SAT

London, United Kingdom

75% AI deal score

$2,775

From SAT

Elite

Aug 23

London, United Kingdom

75% AI deal score

$2,792

From SAT

Elite

Nov 22

London, United Kingdom

75% AI deal score

$2,808

From SAT

Elite

Nov 06

London, United Kingdom

75% AI deal score

$3,059

From SAT

London, United Kingdom

73% AI deal score

$2,239

From SAT

Elite

Nov 23

London, United Kingdom

73% AI deal score

$2,239

Frequently Asked Questions About Flights to London

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites is often helpful. Also, looking into flights with layovers may sometimes present lower fares than direct options.

Booking in advance, often several months before your intended departure, can sometimes lead to better deals. However, prices can fluctuate, so monitoring fares over time may help you identify a good booking window. Mid-week bookings might also offer different pricing.

Yes, comparing flights from nearby airports to your origin and destination can sometimes uncover more economical options. While it might add to your ground travel time, the potential savings on airfare can be significant. Always factor in the cost and convenience of ground transportation.

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