Are direct flights from San Antonio to London always the best option?

Direct flights offer convenience by reducing travel time and avoiding layovers, but they are not always the cheapest option. Flights with one or more connections can sometimes be more affordable. Consider your budget and time constraints when deciding.

Can flexible travel dates help on San Antonio to London flights?

Yes, having flexible travel dates can significantly increase your chances of finding cheaper flights. Prices often vary depending on the day of the week or time of year. Flying during off-peak seasons or on weekdays may result in lower fares.

What extra costs should I check before booking San Antonio to London flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. These additional fees can impact the total price of your trip.

Flights From San Antonio

To London

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 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from San Antonio to London

Explore current cheapest deals departing from San Antonio to London

2026-08-10 – 2026-09-04
SAT - London
85% AI deal score
$845
$670
Round trip
2026-08-07 – 2026-09-04
SAT - London
85% AI deal score
$843
$671
Round trip
2026-08-07 – 2026-09-03
SAT - London
80% AI deal score
$843
$678
Round trip
2026-08-10 – 2026-09-03
SAT - London
80% AI deal score
$845
$678
Round trip
2026-08-17 – 2026-09-04
SAT - London
80% AI deal score
$843
$685
Round trip
2026-08-03 – 2026-08-28
SAT - London
80% AI deal score
$846
$687
Round trip
2026-08-17 – 2026-09-03
SAT - London
79% AI deal score
$843
$693
Round trip
2026-08-07 – 2026-09-06
SAT - London
79% AI deal score
$843
$695
Round trip
2026-08-10 – 2026-08-28
SAT - London
79% AI deal score
$847
$695
Round trip
2026-08-10 – 2026-09-06
SAT - London
79% AI deal score
$845
$695
Round trip

San Antonio to London: Overview

Insights for flights from San Antonio to London

Only 1% of recent fares from San Antonio to London were classified as a good price. Right now, fares for this route are above the typical level, with prices typically ranging from $708 to $1141, and a median fare of $900.

When considering cheap flights from San Antonio to London, the data indicates that January is typically the cheapest month to fly, 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.

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 on this route connect at least once, with 0% of recent fares being non-stop. When connecting, the median number of stopovers is 2.

How much is a round trip from San Antonio to London

Regular price: $725 - $1,607

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 $725 and $1607. The current lowest deal is $668 with Frontier Airlines for travel from Aug 15-Aug 28.

now $668

Low $725

High $1,607

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

Norse Atlantic UK

United Airlines

Deutsche Luft Hansa

Last-minute flights going from San Antonio to London

Wed, Aug 5

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$861

$707

One-way

Wed, Aug 5

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$888

$844

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$857

$791

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$849

$823

One-way

Sat, Aug 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$875

$797

One-way

Mon, Aug 10

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$845

$733

One-way

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

13 nights

Aug 15 - Aug 28

$870 → $668

23%

6 nights

Aug 22 - Aug 28

$920 → $762

17%

30 nights

Aug 5 - Sep 4

$861 → $707

18%

4 nights

Aug 24 - Aug 28

$969 → $825

15%

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 $668.

📅 Best time to fly

January is historically cheapest at $524

Historically, January is the cheapest month to fly from San Antonio to London, with a median price of $524.

⏱️ Flight duration

Typically 25h 16m with stopovers

Flights from San Antonio to London typically take 25h 16m, with an average of 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with frequent deals available over the last 30 days.

🏆 Airline highlight

Frontier Airlines has recent deals

Frontier Airlines has offered recent deals from San Antonio to London, including a $668 fare.

🎯 Booking tip

Good prices are rare

Historically, good prices are rare for flights from San Antonio to London.

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

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

Business & First Class Flight Deals to London

85% AI deal score

$2,864

$2,431

Save $433

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 can often reveal better deals. Setting up price alerts may also notify you when fares drop.

Booking in advance, often several months before your intended departure, can sometimes lead to lower prices. However, last-minute deals can occasionally appear, so it's wise to monitor fare trends. Prices can fluctuate based on demand and seasonality.

Comparing nearby airports at both your origin and destination can sometimes uncover more economical flight options. While it may require additional ground transportation, the savings on airfare can be significant. Always factor in the total cost and travel time.

Related routes

More routes from San Antonio

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Flights to London from other cities

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San Antonio to London: Overview

Insights for flights from San Antonio to London

How much is a round trip from San Antonio to London

Regular price: $725 - $1,607

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 $725 and $1607. The current lowest deal is $668 with Frontier Airlines for travel from Aug 15-Aug 28.

now $668

Low $725

High $1,607

The cheapest time to fly from San Antonio to London

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

Norse Atlantic UK

United Airlines

Deutsche Luft Hansa

Last-minute flights going from San Antonio to London

Wed, Aug 5

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$861

$707

One-way

Wed, Aug 5

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$888

$844

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$857

$791

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$849

$823

One-way

Sat, Aug 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$875

$797

One-way

Mon, Aug 10

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines, Norse Atlantic UK

$845

$733

One-way

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

13 nights

Aug 15 - Aug 28

$870 → $668

23%

6 nights

Aug 22 - Aug 28

$920 → $762

17%

30 nights

Aug 5 - Sep 4

$861 → $707

18%

4 nights

Aug 24 - Aug 28

$969 → $825

15%

Popular Airports to fly from San Antonio to London