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

Direct flights offer convenience by minimizing travel time and avoiding layovers. However, connecting flights can often be more affordable, especially for longer distances. Weigh the trade-off between cost savings and travel duration when making your choice.

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 fluctuate based on the day of the week, season, and local events. Adjusting your departure or return by a few days may lead to considerable savings.

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. Also, consider the cost of transportation to and from the airports at both ends of your journey. These can add up and impact your total travel budget.

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 11 days ago

406 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Aug 2, 2026.)

Today’s best flight deals from San Antonio to London

Explore current cheapest deals departing from San Antonio to London

2026-10-18 – 2026-10-22
SAT - London
74% AI deal score
$854
$787
Round trip
2026-09-14 – 2026-09-21
SAT - London
73% AI deal score
$817
$808
Round trip
2026-09-08 – 2026-09-16
SAT - London
71% AI deal score
$797
$816
Round trip
2026-10-12 – 2026-10-23
SAT - London
73% AI deal score
$794
$839
Round trip
2026-12-07 – 2026-12-12
SAT - London
72% AI deal score
$864
$846
Round trip
2026-09-16 – 2026-09-23
SAT - London
71% AI deal score
$817
$848
Round trip
2026-08-18 – 2026-08-27
SAT - London
76% AI deal score
$937
$850
Round trip
2026-12-02 – 2026-12-08
SAT - London
80% AI deal score
$932
$861
Round trip
2026-11-03 – 2026-11-17
SAT - London
77% AI deal score
$786
$862
Round trip
2026-11-22 – 2026-11-27
SAT - London
77% AI deal score
$867
$865
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 are above the typical level, with prices typically ranging from $708–$1141 and a median of $900 over the last 90 days. For travelers seeking cheap flights from San Antonio to London, new deals appear almost daily, suggesting frequent opportunities to find better prices.

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 options 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 substantial distance of 8023 km. Most itineraries for this route connect at least once, with the median number of stopovers for connecting flights being 2.

How much is a round trip from San Antonio to London

Regular price: $725 - $1,607

Prices are currently below the regular range.

Regular prices for flights from San Antonio to London typically range from $725 to $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. Generally, prices are 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

Deutsche Luft Hansa

Norse Atlantic UK

United Airlines

Last-minute flights going from San Antonio to London

Sun, Aug 16

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,169

$1,008

One-way

Tue, Aug 18

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$910

$888

One-way

Thu, Aug 20

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (STN)

Air Canada

$1,072

$978

One-way

Fri, Aug 21

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Breeze Airways

$1,069

$935

One-way

Sat, Aug 22

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LHR)

Lufthansa

$893

$1,114

One-way

Tue, Sep 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$797

$816

One-way

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

17 nights

Oct 19 - Nov 5

$782 → $614

22%

22 nights

Oct 14 - Nov 5

$778 → $649

17%

15 nights

Oct 21 - Nov 5

$782 → $676

14%

10 nights

Oct 19 - Oct 29

$795 → $694

13%

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 for San Antonio to London are above the typical level at $668.

📅 Best time to fly

January is historically cheapest

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

⏱️ Flight duration

Connecting flights average 25h 16m

Flights from San Antonio to London typically involve 2 stopovers, with a median duration of 25h 16m.

✈️ Airlines & availability

Connecting flights are dominant

Direct flights are not available for this route; connecting flights are dominant.

🏆 Airline highlight

Frontier Airlines offers deals

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

🎯 Booking tip

Deals are frequent

Deals for flights from San Antonio to London are frequent, appearing every 30 days.

San Antonio main airports to depart from

San Antonio International (SAT)

Cheapest

San Antonio International is a good option for flights to London, offering competitive pricing.

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

💸 Flights from ~$755

London main airports to arrive at

Heathrow (LHR)

Cheapest

Heathrow Airport is a major international airport serving London, offering many connections from San Antonio.

📍 ~23 km from city center (reachable by car, train, and subway)

💸 Flights from ~$755

Airports nearby London used as alternative

Birmingham (BHX)

Cheapest

Birmingham Airport is a major international hub with excellent rail connectivity to London Euston.

📍 ~155 km from London (reachable by train)

💸 Flights from ~$803

Business & First Class Flight Deals to London

Discover luxury on the budget with premium cabin class on flights from San Antonio to London.

Elite

Best Elite deals to London

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From SAT

Elite

Oct 17

London, United Kingdom

90% AI deal score

$5,391

$3,994

Save $1,397

Alaska Airlines, Inc., +1

Business Class

From SAT

Elite

Oct 17

London, United Kingdom

89% AI deal score

$5,292

$4,038

Save $1,254

Alaska Airlines, Inc., +1

Business Class

From SAT

Elite

Oct 17

London, United Kingdom

89% AI deal score

$5,359

$4,088

Save $1,271

Alaska Airlines, Inc., +1

Business Class

From SAT

Elite

Oct 17

London, United Kingdom

84% AI deal score

$5,201

$4,087

Save $1,114

Alaska Airlines, Inc., +1

Business Class

From SAT

Elite

Oct 20

London, United Kingdom

84% AI deal score

$5,406

$4,202

Save $1,204

Alaska Airlines, Inc., +1

Business Class

From SAT

Elite

Sep 19

London, United Kingdom

83% AI deal score

$5,475

$4,343

Save $1,132

Air Canada, +1

Business Class

From SAT

Elite

Sep 22

London, United Kingdom

83% AI deal score

$5,625

$4,343

Save $1,282

Air Canada, +1

Business Class

From SAT

Elite

Sep 19

London, United Kingdom

83% AI deal score

$5,462

$4,344

Save $1,118

Air Canada, +1

Business Class

From SAT

Elite

Sep 22

London, United Kingdom

83% AI deal score

$5,474

$4,344

Save $1,130

Air Canada, +1

Business Class

From SAT

Elite

Sep 22

London, United Kingdom

83% AI deal score

$5,671

$4,351

Save $1,320

Air Canada, +1

Business Class

From SAT

Elite

Sep 19

London, United Kingdom

83% AI deal score

$5,638

$4,351

Save $1,287

Air Canada, +1

Business Class

From SAT

Elite

Sep 22

London, United Kingdom

83% AI deal score

$5,474

$4,351

Save $1,123

Air Canada, +1

Business Class

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 platforms can also help you discover better deals. Setting up price alerts may notify you when fares drop.

Booking flights in advance often provides more options and potentially lower prices. However, last-minute deals can sometimes appear, so it's wise to monitor fare trends. The ideal booking window can vary depending on demand and other factors.

Comparing nearby airports at both your origin and destination can sometimes reveal more economical flight options. While it may add to your ground travel, the potential 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 are currently below the regular range.

Regular prices for flights from San Antonio to London typically range from $725 to $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

Deutsche Luft Hansa

Norse Atlantic UK

United Airlines

Last-minute flights going from San Antonio to London

Sun, Aug 16

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$1,169

$1,008

One-way

Tue, Aug 18

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$910

$888

One-way

Thu, Aug 20

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (STN)

Air Canada

$1,072

$978

One-way

Fri, Aug 21

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Breeze Airways

$1,069

$935

One-way

Sat, Aug 22

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LHR)

Lufthansa

$893

$1,114

One-way

Tue, Sep 8

⌛ Last-Minute

SAT - London

San Antonio (SAT) - London (LGW)

Frontier Airlines

$797

$816

One-way

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

17 nights

Oct 19 - Nov 5

$782 → $614

22%

22 nights

Oct 14 - Nov 5

$778 → $649

17%

15 nights

Oct 21 - Nov 5

$782 → $676

14%

10 nights

Oct 19 - Oct 29

$795 → $694

13%

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 for San Antonio to London are above the typical level at $668.

📅 Best time to fly

January is historically cheapest

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

⏱️ Flight duration

Connecting flights average 25h 16m

Flights from San Antonio to London typically involve 2 stopovers, with a median duration of 25h 16m.

✈️ Airlines & availability

Connecting flights are dominant

Direct flights are not available for this route; connecting flights are dominant.

🏆 Airline highlight

Frontier Airlines offers deals

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

🎯 Booking tip

Deals are frequent

Deals for flights from San Antonio to London are frequent, appearing every 30 days.

San Antonio main airports to depart from

San Antonio International (SAT)

Cheapest

San Antonio International is a good option for flights to London, offering competitive pricing.

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

💸 Flights from ~$755

London main airports to arrive at

Heathrow (LHR)

Cheapest

Heathrow Airport is a major international airport serving London, offering many connections from San Antonio.

📍 ~23 km from city center (reachable by car, train, and subway)

💸 Flights from ~$755

Airports nearby London used as alternative

Birmingham (BHX)

Cheapest

Birmingham Airport is a major international hub with excellent rail connectivity to London Euston.

London, United Kingdom

83% AI deal score

$5,474

$4,351

Save $1,123

Air Canada, +1

Business Class

Frequently Asked Questions About Flights to London

Cheap Flights from San Antonio to London

Today’s best flight deals from San Antonio to London

San Antonio to London: Overview

Insights for flights from San Antonio to London

How much is a round trip from San Antonio to London

The cheapest time to fly from San Antonio to London

Direct flights from San Antonio to London

Last-minute flights going from San Antonio to London

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

Popular Airports to fly from San Antonio to London

San Antonio - London route insights

Recent fares are above the typical level

January is historically cheapest

Connecting flights average 25h 16m

Connecting flights are dominant

Frontier Airlines offers deals

Deals are frequent

San Antonio main airports to depart from

London main airports to arrive at

Airports nearby London used as alternative

Business & First Class Flight Deals to London

Best Elite deals to London

Oct 17

Oct 17

Oct 17

Oct 17

Oct 20

Sep 19

Sep 22

Sep 19

Sep 22

Sep 22

Sep 19

Sep 22

Frequently Asked Questions About Flights to London

How can I find cheap flights from San Antonio to London?

When should I book flights from San Antonio to London?

Should I compare nearby airports for flights from San Antonio to London?

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

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

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

Related routes

More routes from San Antonio

Flights to London from other cities

San Antonio to London: Overview

Insights for flights from San Antonio to London

How much is a round trip from San Antonio to London

The cheapest time to fly from San Antonio to London

Direct flights from San Antonio to London

Last-minute flights going from San Antonio to London

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

Popular Airports to fly from San Antonio to London

San Antonio - London route insights

Recent fares are above the typical level

January is historically cheapest

Connecting flights average 25h 16m

Connecting flights are dominant

Frontier Airlines offers deals

Deals are frequent

San Antonio main airports to depart from

London main airports to arrive at

Airports nearby London used as alternative

Business & First Class Flight Deals to London

Best Elite deals to London

Oct 17

Oct 17

Oct 17

Oct 17

Oct 20

Sep 19

Sep 22

Sep 19

Sep 22

Sep 22

Sep 19

Sep 22

Frequently Asked Questions About Flights to London

How can I find cheap flights from San Antonio to London?

When should I book flights from San Antonio to London?

Should I compare nearby airports for flights from San Antonio to London?