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

Direct flights offer convenience by minimizing travel time and avoiding layovers. However, they are not always the cheapest option. Flights with one or more connections can sometimes be significantly more affordable, depending on the route and demand.

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

Yes, being flexible with your travel dates can often lead to finding better flight deals. Prices can vary significantly between different days of the week or even within the same month. Adjusting your departure or return by a few days may result in considerable savings.

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 or for certain payment methods. These can add to the 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 7 days ago

483 airlines compared

80%+ AI score for best value

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

Today’s best flight deals from San Juan to London

Explore current cheapest deals departing from San Juan to London

2026-11-08 – 2026-11-10
SJU - London
82% AI deal score
$887
$743
Round trip
2027-01-12 – 2027-01-16
SJU - London
73% AI deal score
$655
$766
Round trip
2027-02-06 – 2027-02-17
SJU - London
76% AI deal score
$701
$780
Round trip
2027-02-10 – 2027-02-18
SJU - London
76% AI deal score
$708
$784
Round trip
2027-02-03 – 2027-02-09
SJU - London
76% AI deal score
$721
$784
Round trip
2027-01-13 – 2027-01-16
SJU - London
73% AI deal score
$659
$789
Round trip
2027-01-08 – 2027-01-16
SJU - London
73% AI deal score
$620
$789
Round trip
2027-01-11 – 2027-01-16
SJU - London
73% AI deal score
$648
$789
Round trip
2027-01-14 – 2027-01-16
SJU - London
73% AI deal score
$666
$789
Round trip
2026-11-08 – 2026-11-15
SJU - London
77% AI deal score
$809
$800
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 22h 0m, including connections. This reflects the nature of long-haul travel between these two cities, where most itineraries involve multiple stops. Travelers should anticipate a full day of travel to reach their destination.

For those seeking cheap flights from San Juan to London, prices typically range from $1026–$1500, with a median of $1235. Right now, current fares are near the typical level for this route. New deals show up several times a week, suggesting that opportunities for better pricing may arise regularly.

When is the cheapest time to fly from San Juan to London? The most affordable months to fly are April, with a median fare of $628, and July, with a median fare of $639. February also offers competitive pricing, with a median fare of $793. These months present the best opportunities for securing lower-cost flights.

Most itineraries from San Juan to London connect at least once. In fact, 0% of recent fares were non-stop. For connecting flights, the typical number of stopovers is 2, which contributes to the overall journey time. This means travelers should expect to make at least two stops on their way to London.

The distance between San Juan and London is approximately 6783 kilometers. This classifies the route as a long-haul journey, necessitating a significant amount of travel time. The considerable distance is a primary factor in the extended flight durations and the prevalence of connecting itineraries.

How much is a round trip from San Juan to London

Regular price: $606 - $1,557

Prices for flights from San Juan to London are currently within the regular range.

The regular price range for flights from San Juan to London is between $606 and $1557. The current lowest deal is $784 with JetBlue Airways, for travel from Feb 3-Feb 9.

now $784

Low $606

High $1,557

The cheapest time to fly from San Juan to London

The cheapest month to fly from San Juan to London is April, with a median price of $628. The most expensive month is December, with a median price of $1508. Prices are generally lower from February to November.

April

Cheapest

Flights from $628

December

Most Expensive

Flights from $1,508

Jan

Feb

Apr

May

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Juan to London

Avianca

KLM

Iberia Airlines

Air France

Last-minute flights going from San Juan to London

Fri, Oct 30

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LGW)

Iberia Airlines

$806

$3,355

One-way

Sun, Nov 8

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

Avianca

$809

$799

One-way

Tue, Nov 10

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

JetBlue Airways

$760

$765

One-way

Tue, Nov 10

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

JetBlue Airways

$741

$775

One-way

Tue, Nov 10

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

JetBlue Airways

$755

$781

One-way

Tue, Nov 10

⌛ Last-Minute

SJU - London

San Juan (SJU) - London (LHR)

JetBlue Airways

$736

$781

One-way

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

4 nights

Nov 14 - Nov 18

$834 → $765

2 nights

Nov 23 - Nov 25

$826 → $781

1 night

Nov 24 - Nov 25

$824 → $781

5 nights

Nov 13 - Nov 18

$806 → $765

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 from San Juan to London are near the typical level at $784.

📅 Best time to fly

Fly in April for prices as low as $628

Historically, April, July, and February offer the lowest median prices for this route.

⏱️ Flight duration

Connecting flights typically take 22h 0m

Flights from San Juan to London typically take 22h 0m with two stopovers.

✈️ Airlines & availability

Connecting flights are dominant on this route

This route is dominated by connecting flights; direct flights are not typically available.

🏆 Airline highlight

JetBlue Airways offers 41 deals

JetBlue Airways has 41 deals, followed by United Airlines with 17 deals.

🎯 Booking tip

Deals appear regularly for this route

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

San Juan main airports to depart from

Luis Muñoz Marín International (SJU)

Cheapest

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

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

💸 Flights from ~$774

Fernando Luis Ribas Dominicci (SIG)

Fernando Luis Ribas Dominicci is an alternative departure airport for flights from San Juan to London.

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

💸 Flights from ~$774

London main airports to arrive at

Gatwick (LGW)

Cheapest

Gatwick Airport offers a convenient arrival option for flights from San Juan to London.

📍 ~40 km from London city center (reachable by car)

💸 Flights from ~$772

Airports nearby London used as alternative

Birmingham (BHX)

Birmingham Airport is a major international hub with excellent rail connectivity, useful when London airports are congested.

📍 ~160 km from London (reachable by direct train)

💸 Flights from ~$922

Business & First Class Flight Deals to London

$3,667

Save $1,096

Icelandair

Business Class

From SJU

Elite

Nov 17

London, United Kingdom

89% AI deal score

$4,274

$3,411

Save $863

Avianca

Business Class

From SJU

Elite

Nov 17

London, United Kingdom

89% AI deal score

$4,231

$3,411

Save $820

Avianca

Business Class

From SJU

Elite

Nov 17

London, United Kingdom

89% AI deal score

$4,274

$3,411

Save $863

Avianca

Business Class

Frequently Asked Questions About Flights to London

To find more affordable flights, consider being flexible with your travel dates and times. Using flight comparison sites can help you compare options from various airlines and online travel agencies. Setting up price alerts may also notify you when fares drop for your desired route.

Booking in advance often provides more options and potentially better prices, though last-minute deals can sometimes appear. Generally, monitoring prices over several weeks or months before your intended travel date can help you identify favorable booking times. 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 involve additional ground transportation, the savings on airfare can occasionally make it a worthwhile consideration. Always factor in the total cost and convenience.

Related routes

More routes from San Juan

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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: $606 - $1,557

Prices for flights from San Juan to London are currently within the regular range.

The regular price range for flights from San Juan to London is between $606 and $1557. The current lowest deal is $784 with JetBlue Airways, for travel from Feb 3-Feb 9.

now $784

Low $606

High $1,557

The cheapest time to fly from San Juan to London

April

Cheapest

Flights from $628

December

Most Expensive

Flights from $1,508

Jan

Feb

Apr

May

Jul

Aug

Sep

Oct

Nov

Dec