In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 is the cheapest time of day to fly from SJU to LHR?

When flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, 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 Heathrow that include hotel bookings?

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

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

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 Heathrow.

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

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

£197+ Cheap Flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

Cheap flight deals from Luis Munoz Marin Intl to Heathrow

Enter your travel dates to find the best prices.

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Cheapest flights from Luis Munoz Marin Intl to Heathrow
Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Thu 5/1118:55 -

1 stop13h 10m

Tue 10/1107:30 -

1 stop13h 10m

Deal found 19/9£481

Fri 25/913:16 -

1 stop12h 29m

Wed 30/908:20 -

1 stop20h 29m

Deal found 17/9£501

Wed 11/1118:10 -

1 stop19h 05m

Tue 24/1108:25 -

1 stop15h 35m

Deal found 19/9£509

Fri 9/1018:35 -

1 stop16h 00m

Tue 20/1022:05 -

1 stop24h 05m

Deal found 18/9£511

Thu 5/1112:50 -

1 stop21h 45m

Mon 9/1121:35 -

1 stop23h 20m

Deal found 19/9£512

Wed 14/1018:35 -

1 stop16h 00m

Mon 5/422:05 -

1 stop18h 20m

Deal found 16/9£517

Wed 11/1118:10 -

1 stop12h 25m

Tue 24/1107:30 -

2 stops19h 06m

Deal found 21/9£523

Find flight deals from Luis Munoz Marin Intl to Heathrow

Round-trip from	£481
One-way from	£197
Popular in	June
Cheapest in	April
Average price	£692

Iberia
5/11-10/11
2 total stops
26h 20m total
San Juan to London

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Virgin Atlantic
3/2-31/12
1 total stop
16h 15m total
San Juan to London

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£69 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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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 Heathrow Airport 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

Tue 17/11

13:00-12:00

2 stops19h 00m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£225

Fastest return journey

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 16/11

13:00-10:50

2 stops17h 50m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£225

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 2/11

08:15-07:50

1 stop19h 35m

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

07:00-09:25

1 stop22h 25m

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

Mon 2/11

13:00-12:00

2 stops19h 00m

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

Wed 11/11

13:00-12:00

2 stops19h 00m

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

Wed 14/10

13:15-10:20

1 stop16h 05m

London Heathrow

Wed 21/10

11:45-23:44

2 stops16h 59m

£534

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/11

15:17-08:15

1 stop12h 58m

London Heathrow

Tue 10/11

06:00-21:38

2 stops19h 38m

£560

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 28/12

16:35-09:55

1 stop13h 20m

London Heathrow

Fri 8/1

10:50-23:50

1 stop17h 00m

£564

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 15/10

14:02-09:15

1 stop14h 13m

London Heathrow

Tue 20/10

18:35-13:49

2 stops24h 14m

£580

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 17 resultsSorted by cheapest first

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

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

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 Heathrow Airport

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

The price you pay for your flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £538). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £844). 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 Heathrow Airport?

Airfare is below average for this route at the moment.

San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flights typically cost between £592 and £768 in November.
The cheapest return price found within the last 5 days was £481 on Iberia (5 Nov–10 Nov).

Related info for your journey

How long is the flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?
For as low as £560, Avianca can have you in London Heathrow Airport from San Juan Luis Munoz Marin Intl Airport in 12h 58m. Airlines will cover a distance of 4179 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Luis Munoz Marin Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on Luis Munoz Marin Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Luis Munoz Marin Intl to Heathrow?
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 Heathrow.
Can I find deals for business class flights from Luis Munoz Marin Intl to Heathrow?
Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Heathrow 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 Heathrow Airport?
Currently, April is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £538). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £844). 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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Deals for Luis Munoz Marin Intl to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Luis Munoz Marin Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Heathrow from Luis Munoz Marin Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport from £197

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. 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 Heathrow

Cheapest flights from Luis Munoz Marin Intl to HeathrowExplore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from Luis Munoz Marin Intl to HeathrowDiscover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Discover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Last-minute flights from Luis Munoz Marin Intl to HeathrowDiscover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated 21 September 2026 and is based on user searches.

Discover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Luis Munoz Marin Intl to HeathrowSearch for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Search for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Find flight deals from Luis Munoz Marin Intl to Heathrow

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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 Heathrow Airport that are best for you.

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

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

Cheapflights Insights

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

The price you pay for your flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Airfare is below average for this route at the moment.

San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flights typically cost between £592 and £768 in November.The cheapest return price found within the last 5 days was £481 on Iberia (5 Nov–10 Nov).

Related info for your journey

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

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

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

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Luis Munoz Marin Intl to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

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Search flights from Luis Munoz Marin Intl to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 September 2026.

Luis Munoz Marin Intl and Heathrow flights

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

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

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Cheapest flights from Luis Munoz Marin Intl to Heathrow
Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from Luis Munoz Marin Intl to Heathrow
Discover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Last-minute flights from Luis Munoz Marin Intl to Heathrow
Discover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Luis Munoz Marin Intl to Heathrow
Search for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport flights typically cost between £592 and £768 in November.
The cheapest return price found within the last 5 days was £481 on Iberia (5 Nov–10 Nov).