How long is the flight from San Juan Luis Munoz Marin Intl Airport to London?

KLM and United Airlines can get you from San Juan Luis Munoz Marin Intl Airport to London in just under 14h. Your travel time can differ by up to 1h 25m. The distance from San Juan Luis Munoz Marin Intl Airport to London is about 4179 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from San Juan Luis Munoz Marin Intl Airport to London?

Most travelers choose San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City when deciding on the best route from San Juan Luis Munoz Marin Intl Airport to London.

What is the cheapest time of day to fly from SJU to LON?

When flying from San Juan Luis Munoz Marin Intl Airport to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Luis Munoz Marin Intl to London that include hotel bookings?

Yes. In addition to deals on Luis Munoz Marin Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Luis Munoz Marin Intl to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to London.

Can I find deals for business class flights from Luis Munoz Marin Intl to London?

Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£221+ Cheap Flights from San Juan Luis Munoz Marin Intl Airport to London

Cheap flight deals from Luis Munoz Marin Intl to London

Enter your travel dates to find the best prices.

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Cheapest flights from Luis Munoz Marin Intl to London
Explore the most affordable flight options available from Luis Munoz Marin Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2026.

Tue 20/1014:18 -

1 stop13h 42m

Sun 1/1110:05 -

1 stop13h 55m

Deal found 10/10£532

Mon 2/1121:35 -

1 stop15h 00m

Mon 16/1107:30 -

1 stop13h 10m

Deal found 11/10£537

Mon 16/1107:00 -

1 stop19h 20m

Fri 20/1106:30 -

2 stops20h 45m

Deal found 10/10£547

Thu 26/1121:35 -

1 stop14h 30m

Thu 3/1211:15 -

1 stop15h 20m

Deal found 8/10£563

Tue 27/1010:45 -

1 stop30h 55m

Sat 31/1009:20 -

1 stop18h 53m

Deal found 11/10£597

Fri 13/1113:40 -

1 stop14h 35m

Wed 18/1107:35 -

1 stop13h 05m

Deal found 10/10£601

Thu 5/1121:35 -

1 stop15h 00m

Mon 9/1107:30 -

1 stop13h 10m

Deal found 10/10£603

Thu 26/1114:52 -

1 stop15h 33m

Thu 3/1206:50 -

2 stops21h 46m

Deal found 8/10£604

Fri 27/1116:20 -

1 stop15h 20m

Fri 4/1220:25 -

2 stops31h 33m

Deal found 13/10£605

Find flight deals from Luis Munoz Marin Intl to London

Round-trip from	£537
One-way from	£221
Popular in	June
Cheapest in	February
Average price	£664

Iberia
2/11-16/11
2 total stops
28h 10m total
San Juan to London

Search Deals

Virgin Atlantic
1/3-31/12
1 total stop
20h 10m total
San Juan to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£121 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 18/2

16:55-12:00

1 stop15h 05m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£228

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/11

07:00-06:55

1 stop19h 55m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/11

07:00-09:25

1 stop22h 25m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/3

07:40-10:50

2 stops23h 10m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Fri 23/10

14:59-12:05

2 stops16h 06m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 8/2

08:25-10:50

2 stops22h 25m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 18/1

07:00-09:55

2 stops22h 55m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£231

Fastest return journey

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/11

21:35-14:55

1 stop13h 20m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£293

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 16/11

08:05-09:10

2 stops21h 05m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£314

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 4/11

02:05-21:20

1 stop15h 15m

London Heathrow

Mon 9/11

06:50-00:36

2 stops21h 46m

£611

Flights are sorted by cheapest return flights first.

Deals found on 11/10

Showing 1-10 of 20 resultsSorted by cheapest first

Best time to book a flight from Luis Munoz Marin Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Luis Munoz Marin Intl with our price prediction graph.

SJU-LON

SJU-LHR

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Juan Luis Munoz Marin Intl Airport to London

SJU-LON

SJU-LHR

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London?

Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London (average of £531). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £920). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from San Juan Luis Munoz Marin Intl Airport to London?

Airfare is below average for this route at the moment.

San Juan Luis Munoz Marin Intl Airport to London flights typically cost between £590 and £750 in November.
The cheapest return price found within the last 5 days was £537 on Iberia (2 Nov–16 Nov).

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to London?

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

How long is the flight from San Juan Luis Munoz Marin Intl Airport to London?
KLM and United Airlines can get you from San Juan Luis Munoz Marin Intl Airport to London in just under 14h. Your travel time can differ by up to 1h 25m. The distance from San Juan Luis Munoz Marin Intl Airport to London is about 4179 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from San Juan Luis Munoz Marin Intl Airport to London?
Most travelers choose San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City when deciding on the best route from San Juan Luis Munoz Marin Intl Airport to London.
Can I find deals for flights from Luis Munoz Marin Intl to London that include hotel bookings?
Yes. In addition to deals on Luis Munoz Marin Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Luis Munoz Marin Intl to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to London.
Can I find deals for business class flights from Luis Munoz Marin Intl to London?
Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London?
Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London (average of £531). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £920). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Luis Munoz Marin Intl to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Luis Munoz Marin Intl to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Luis Munoz Marin Intl.

Can Cheapflights find flights from Luis Munoz Marin Intl to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Luis Munoz Marin Intl to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Luis Munoz Marin Intl to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Luis Munoz Marin Intl today and book when prices fit your budget.

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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £221

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Luis Munoz Marin Intl to London

Cheapest flights from Luis Munoz Marin Intl to LondonExplore the most affordable flight options available from Luis Munoz Marin Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2026.

Explore the most affordable flight options available from Luis Munoz Marin Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2026.

Best flights from Luis Munoz Marin Intl to LondonDiscover carefully curated flight deals from Luis Munoz Marin Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 October 2026.

Discover carefully curated flight deals from Luis Munoz Marin Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 October 2026.

Last-minute flights from Luis Munoz Marin Intl to LondonDiscover last-minute flight deals from Luis Munoz Marin Intl to London. Data last updated 13 October 2026 and is based on user searches.

Discover last-minute flight deals from Luis Munoz Marin Intl to London. Data last updated 13 October 2026 and is based on user searches.

One-way flights from Luis Munoz Marin Intl to LondonSearch for one-way flight options from Luis Munoz Marin Intl to London. Find affordable one-way fares based on user searches. Data last updated 13 October 2026.

Search for one-way flight options from Luis Munoz Marin Intl to London. Find affordable one-way fares based on user searches. Data last updated 13 October 2026.

Find flight deals from Luis Munoz Marin Intl to London

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Cheapflights Fare Finder

Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London that are best for you.

Best time to book a flight from Luis Munoz Marin Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Luis Munoz Marin Intl with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London?

How much does it cost for a return flight from San Juan Luis Munoz Marin Intl Airport to London?

Airfare is below average for this route at the moment.

San Juan Luis Munoz Marin Intl Airport to London flights typically cost between £590 and £750 in November.The cheapest return price found within the last 5 days was £537 on Iberia (2 Nov–16 Nov).

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to London?

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

How long is the flight from San Juan Luis Munoz Marin Intl Airport to London?

What are the most popular routes from San Juan Luis Munoz Marin Intl Airport to London?

Can I find deals for flights from Luis Munoz Marin Intl to London that include hotel bookings?

How can I find direct flights from Luis Munoz Marin Intl to London?

Can I find deals for business class flights from Luis Munoz Marin Intl to London?

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London?

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How does Cheapflights help users find flights from Luis Munoz Marin Intl to London?

Why should you use Cheapflights to find cheap flight tickets from Luis Munoz Marin Intl to London?

Can Cheapflights find flights from Luis Munoz Marin Intl to London with no change fees?

Can Cheapflights notify me if prices for flights from Luis Munoz Marin Intl to London become cheaper?

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Cheapest flights from Luis Munoz Marin Intl to London
Explore the most affordable flight options available from Luis Munoz Marin Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2026.

Best flights from Luis Munoz Marin Intl to London
Discover carefully curated flight deals from Luis Munoz Marin Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 October 2026.

Last-minute flights from Luis Munoz Marin Intl to London
Discover last-minute flight deals from Luis Munoz Marin Intl to London. Data last updated 13 October 2026 and is based on user searches.

One-way flights from Luis Munoz Marin Intl to London
Search for one-way flight options from Luis Munoz Marin Intl to London. Find affordable one-way fares based on user searches. Data last updated 13 October 2026.

San Juan Luis Munoz Marin Intl Airport to London flights typically cost between £590 and £750 in November.
The cheapest return price found within the last 5 days was £537 on Iberia (2 Nov–16 Nov).