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

Direct flights offer convenience by reducing travel time and avoiding layovers. However, they are not always the most budget-friendly choice. Flights with connections can sometimes be significantly cheaper, especially for longer routes, if you don't mind the extra travel time.

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

Being flexible with your travel dates can often unlock more affordable flight prices. Mid-week travel or flying during off-peak seasons may result in lower fares compared to weekend or holiday travel. Adjusting your departure or return by a few days can sometimes make a notable difference.

What extra costs should I check before booking San Juan 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. Understanding these additional expenses helps you calculate the true total cost of your trip.

Flights From San Juan

To London

Cheap Flights from San Juan to London

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

Deals from

San Juan

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

Prices updated 1 day ago

462 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 15, 2026.)

Today’s best flight deals from San Juan to London

Explore current cheapest deals departing from San Juan to London

2026-11-09 – 2026-11-19
SJU - London
75% AI deal score
$704
$652
Round trip
2026-11-04 – 2026-11-12
SJU - London
75% AI deal score
$708
$652
Round trip
2026-11-04 – 2026-11-12
SJU - London
81% AI deal score
$786
$662
Round trip
2027-02-10 – 2027-02-18
SJU - London
81% AI deal score
$734
$673
Round trip
2026-10-16 – 2026-10-21
SJU - London
78% AI deal score
$780
$675
Round trip
2026-11-17 – 2026-11-18
SJU - London
83% AI deal score
$818
$681
Round trip
2026-09-25 – 2026-09-28
SJU - London
88% AI deal score
$1,010
$683
Round trip
2026-09-14 – 2026-09-16
SJU - London
91% AI deal score
$1,175
$683
Round trip
2026-10-05 – 2026-10-19
SJU - London
78% AI deal score
$713
$686
Round trip
2026-10-14 – 2026-10-20
SJU - London
79% AI deal score
$748
$686
Round trip

San Juan to London: Overview

Insights for flights from San Juan to London

A typical journey from San Juan to London takes about 26h 35m, including connections. Given that most itineraries involve at least one stopover, this duration reflects the full travel time for long-haul routes. Travelers should account for this extended journey when planning their trip between these two cities.

For those seeking cheap flights from San Juan to London, prices typically range from $718–$1486, with a median of $1034. Right now, current fares are above the typical level. Only 4% of recent fares were classified as a good price, indicating that finding significantly discounted tickets can be challenging.

When is the cheapest time to fly from San Juan to London? The data indicates that January is typically the most affordable month, with a median fare of $496. December also offers competitive prices, with a median of $505, followed by March at a median of $592. Planning your travel during these months could lead to substantial savings.

Most itineraries from San Juan to London are connecting flights, as 0% of recent fares were non-stop. This means that travelers should expect to make at least one stopover. The median number of stopovers for connecting flights is 2, which contributes to the overall journey time.

The route from San Juan to London covers a substantial distance of 6783 km, classifying it as a long-haul flight. This considerable distance necessitates longer travel times and often involves connecting flights to reach the destination.

How much is a round trip from San Juan to London

Regular price: $665 - $1,485

Prices are currently within the regular range.

The regular price range for flights from San Juan to London is $665 to $1485. The current lowest deal is $675 with Iberia Airlines for travel from Oct 16 to Oct 21.

now $675

Low $665

High $1,485

The cheapest time to fly from San Juan to London

Flights from San Juan to London are cheapest in January, with a median price of $496. The most expensive month to fly is July, with a median price of $1243. Prices are generally lower from January to December.

January

Cheapest

Flights from $496

July

Most Expensive

Flights from $1,243

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Juan to London

KLM

Frontier Airlines

JetBlue Airways

Norse Atlantic UK

Last-minute flights going from San Juan to London

Mon, Sep 14

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$1,175

$683

One-way

Tue, Sep 15

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$960

$802

One-way

Wed, Sep 16

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$947

$803

One-way

Fri, Sep 18

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$875

$814

One-way

Tue, Sep 22

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$913

$723

One-way

Tue, Sep 22

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$872

$723

One-way

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

2 nights

Sep 14 - Sep 16

$1,175 → $683

42%

3 nights

Sep 25 - Sep 28

$1,010 → $683

32%

2 nights

Sep 25 - Sep 27

$1,016 → $696

32%

1 night

Sep 26 - Sep 27

$1,000 → $696

30%

Popular Airports to fly from San Juan to London

San Juan - London route insights

💸 Price insights

Recent fares are near the typical level

Recent fares for San Juan to London are near the typical level at $675.

📅 Best time to fly

January offers the lowest median price

Historically, January has the lowest median price at $496 for San Juan to London.

⏱️ Flight duration

Median flight time is 26h 35m

The median flight time from San Juan to London is 26 hours 35 minutes with 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant

Direct flights are not available; connecting flights are the only option for this route.

🏆 Airline highlight

Iberia Airlines offers a recent deal

A recent deal from San Juan to London was found on Iberia Airlines for $675.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from San Juan to London appear frequently, about every 30 days.

San Juan main airports to depart from

Luis Muñoz Marín International (SJU)

Cheapest

Luis Muñoz Marín International Airport (SJU) is a good option for flights from San Juan to London.

📍 ~11 km from San Juan (reachable by car)

💸 Flights from ~$603

Fernando Luis Ribas Dominicci (SIG)

Fernando Luis Ribas Dominicci Airport (SIG) is an alternative for flights from San Juan to London.

📍 ~1 km from San Juan (reachable by car)

💸 Flights from ~$603

London main airports to arrive at

Gatwick (LGW)

Cheapest

Gatwick Airport is a good choice for flights from San Juan to London, with flights from $603.

📍 ~40 km from London city center (reachable by car, bus, or train).

💸 Flights from ~$603

Airports nearby London used as alternative

Birmingham (BHX)

Birmingham Airport is a major international hub with excellent rail connectivity, offering a reliable alternative to London.

📍 ~150 km from London (reachable by train)

💸 Flights from ~$770

Business & First Class Flight Deals to London

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

Elite

Best Elite deals to London

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

From SJU

Elite

Oct 26

London, United Kingdom

93% AI deal score

$5,893

$3,164

Save $2,729

Avianca

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

92% AI deal score

$6,623

$4,008

Save $2,615

Avianca, +1

Business Class

From SJU

Elite

Dec 30

London, United Kingdom

91% AI deal score

$5,682

$3,576

Save $2,106

Icelandair

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,439

$4,008

Save $2,431

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,268

$4,009

Save $2,259

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,268

$4,009

Save $2,259

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,268

$4,009

Save $2,259

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,268

$4,009

Save $2,259

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,286

$4,009

Save $2,277

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,268

$4,014

Save $2,254

Avianca, +1

Business Class

From SJU

Elite

Oct 31

London, United Kingdom

91% AI deal score

$6,064

$4,074

Save $1,990

Avianca, +1

Business Class

From SJU

Elite

Dec 02

London, United Kingdom

91% AI deal score

$2,715

$2,133

Save $582

United Airlines

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 sites can also help uncover better deals. Setting up price alerts may notify you when fares drop for your desired route.

Booking flights in advance often provides more options and potentially better prices. However, last-minute deals can sometimes appear, so it's useful to monitor fare trends. The ideal booking window can vary, but planning ahead is generally recommended.

Comparing nearby airports at both your origin and destination can sometimes lead to more economical flight options. While it may add to your travel time, the potential savings on airfare can be significant. Always factor in ground transportation costs when considering this approach.

Related routes

More routes from San Juan

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Flights to London from other cities

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San Juan to London: Overview

Insights for flights from San Juan to London

How much is a round trip from San Juan to London

Regular price: $665 - $1,485

Prices are currently within the regular range.

The regular price range for flights from San Juan to London is $665 to $1485. The current lowest deal is $675 with Iberia Airlines for travel from Oct 16 to Oct 21.

now $675

Low $665

High $1,485

The cheapest time to fly from San Juan to London

January

Cheapest

Flights from $496

July

Most Expensive

Flights from $1,243

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Juan to London

KLM

Frontier Airlines

JetBlue Airways

Norse Atlantic UK

Last-minute flights going from San Juan to London

Mon, Sep 14

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$1,175

$683

One-way

Tue, Sep 15

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$960

$802

One-way

Wed, Sep 16

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$947

$803

One-way

Fri, Sep 18

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

KLM

$875

$814

One-way

Tue, Sep 22

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$913

$723

One-way

Tue, Sep 22

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

$872

$723

One-way

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

2 nights

Sep 14 - Sep 16

$1,175 → $683

42%

3 nights

Sep 25 - Sep 28

$1,010 → $683

32%

2 nights

Sep 25 - Sep 27

$1,016 → $696

32%

1 night

Sep 26 - Sep 27

$1,000 → $696

30%

Popular Airports to fly from San Juan to London

San Juan - London route insights

💸 Price insights

Recent fares are near the typical level

Recent fares for San Juan to London are near the typical level at $675.

📅 Best time to fly

January offers the lowest median price

Historically, January has the lowest median price at $496 for San Juan to London.

⏱️ Flight duration

Median flight time is 26h 35m

The median flight time from San Juan to London is 26 hours 35 minutes with 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant

Direct flights are not available; connecting flights are the only option for this route.

🏆 Airline highlight

Iberia Airlines offers a recent deal

A recent deal from San Juan to London was found on Iberia Airlines for $675.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from San Juan to London appear frequently, about every 30 days.

San Juan main airports to depart from

Luis Muñoz Marín International (SJU)

Cheapest

Luis Muñoz Marín International Airport (SJU) is a good option for flights from San Juan to London.

📍 ~11 km from San Juan (reachable by car)

💸 Flights from ~$603

Fernando Luis Ribas Dominicci (SIG)

Fernando Luis Ribas Dominicci Airport (SIG) is an alternative for flights from San Juan to London.

📍 ~1 km from San Juan (reachable by car)

💸 Flights from ~$603

London main airports to arrive at

Gatwick (LGW)

Cheapest

Gatwick Airport is a good choice for flights from San Juan to London, with flights from $603.

📍 ~40 km from London city center (reachable by car, bus, or train).

💸 Flights from ~$603

Airports nearby London used as alternative

Birmingham (BHX)

Birmingham Airport is a major international hub with excellent rail connectivity, offering a reliable alternative to London.

London, United Kingdom

91% AI deal score

$2,715

$2,133

Save $582

United Airlines

Business Class

Frequently Asked Questions About Flights to London

Cheap Flights from San Juan to London

Today’s best flight deals from San Juan to London

San Juan to London: Overview

Insights for flights from San Juan to London

How much is a round trip from San Juan to London

The cheapest time to fly from San Juan to London

Direct flights from San Juan to London

Last-minute flights going from San Juan to London

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

Popular Airports to fly from San Juan to London

San Juan - London route insights

Recent fares are near the typical level

January offers the lowest median price

Median flight time is 26h 35m

Connecting flights are dominant

Iberia Airlines offers a recent deal

Deals are frequent on this route

San Juan 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 26

Oct 31

Dec 30

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Dec 02

Frequently Asked Questions About Flights to London

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

When should I book flights from San Juan to London?

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

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

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

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

Related routes

More routes from San Juan

Flights to London from other cities

San Juan to London: Overview

Insights for flights from San Juan to London

How much is a round trip from San Juan to London

The cheapest time to fly from San Juan to London

Direct flights from San Juan to London

Last-minute flights going from San Juan to London

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

Popular Airports to fly from San Juan to London

San Juan - London route insights

Recent fares are near the typical level

January offers the lowest median price

Median flight time is 26h 35m

Connecting flights are dominant

Iberia Airlines offers a recent deal

Deals are frequent on this route

San Juan 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 26

Oct 31

Dec 30

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Oct 31

Dec 02

Frequently Asked Questions About Flights to London

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

When should I book flights from San Juan to London?

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