How long is the flight from Puerto Rico to London Heathrow Airport?

There are many flights that can get you from Puerto Rico to London Heathrow Airport in 12h 25m. Fly via United Airlines, British Airways, or Delta to get the fastest option. There are 4179 mi between Puerto Rico and London Heathrow Airport. This flight may include one or multiple stops.

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 are the most popular routes from Puerto Rico to London Heathrow Airport?

The most popular flight routes from Puerto Rico to London Heathrow Airport are San Juan Luis Munoz Marin Intl - London Heathrow, Ponce Mercedita - London Heathrow and Culebra - London Heathrow.

What is the cheapest time of day to fly from PR to LHR?

When flying from Puerto Rico 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 Puerto Rico to Heathrow that include hotel bookings?

Yes. In addition to deals on Puerto Rico to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Puerto Rico to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Heathrow.

Can I find deals for business class flights from Puerto Rico to Heathrow?

Yes. Cheapflights offers flight deals from Puerto Rico 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.

£198+ Cheap Flights from Puerto Rico to London Heathrow Airport

Cheap flight deals from Puerto Rico to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Puerto Rico to Heathrow
Explore the most affordable flight options available from Puerto Rico to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2026.

Tue 1/1216:55 -

1 stop35h 00m

Fri 4/1206:50 -

2 stops34h 42m

Deal found 10/11£522

Wed 11/1118:20 -

1 stop16h 15m

Tue 24/1121:35 -

1 stop23h 20m

Deal found 10/11£549

Thu 26/1112:50 -

1 stop21h 45m

Thu 3/1221:35 -

1 stop23h 20m

Deal found 13/11£550

Fri 13/1118:20 -

1 stop16h 15m

Wed 25/1121:35 -

1 stop23h 20m

Deal found 12/11£550

Fri 13/1118:20 -

1 stop16h 15m

Wed 18/1121:35 -

1 stop23h 20m

Deal found 9/11£551

Tue 17/1118:20 -

1 stop16h 15m

Fri 27/1121:35 -

1 stop23h 20m

Deal found 10/11£558

Sun 22/1118:20 -

1 stop16h 15m

Sun 29/1121:35 -

1 stop23h 20m

Deal found 12/11£559

Mon 28/1218:20 -

1 stop16h 15m

Fri 8/121:35 -

1 stop23h 20m

Deal found 10/11£565

Fri 25/1218:20 -

1 stop16h 15m

Thu 7/121:35 -

1 stop23h 20m

Deal found 13/11£566

Thu 26/1115:17 -

1 stop12h 58m

Thu 3/1211:15 -

1 stop14h 19m

Deal found 11/11£567

Find flight deals from Puerto Rico to Heathrow

Round-trip from	£522
One-way from	£198
Popular in	June
Cheapest in	February
Average price	£639

United Airlines
1/12-4/12
3 total stops
69h 42m total
Puerto Rico to London

Search Deals

JetBlue
30/1-31/12
1 total stop
21h 33m total
Puerto Rico to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£122 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 November 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Puerto Rico 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

Sat 20/2

15:55-11:40

1 stop15h 45m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£232

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 29/4

17:15-20:00

1 stop21h 45m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£235

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Sat 12/12

02:05-07:55

2 stops25h 50m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£262

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/11

02:05-21:20

1 stop15h 15m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£321

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Sun 29/11

18:20-16:35

2 stops42h 15m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£351

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Sun 13/12

05:01-10:50

3 stops25h 49m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£376

Fastest return journey

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 21/12

15:01-07:50

1 stop12h 49m

London Heathrow

Wed 31/12

00:00-19:00

Nonstop0h 00m

£398

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/2

16:55-07:55

1 stop35h 00m

London Heathrow

Thu 4/2

06:50-13:32

2 stops34h 42m

£535

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 21/4

13:25-06:50

1 stop12h 25m

London Heathrow

Sun 2/5

07:55-21:24

2 stops18h 29m

£649

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 26/11

08:25-06:20

2 stops17h 55m

London Heathrow

Tue 1/12

06:50-22:22

2 stops19h 32m

£650

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 20 resultsSorted by cheapest first

Best time to book a flight from Puerto Rico to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Puerto Rico 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 Puerto Rico to London Heathrow Airport

PR0-LHR

SJU-LHR

What is the cheapest month to book a flight from Puerto Rico to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £593). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £855). 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 far ahead should I book a flight from Puerto Rico to London Heathrow Airport?

The price you pay for your flight from Puerto Rico to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

How long is the flight from Puerto Rico to London Heathrow Airport?
There are many flights that can get you from Puerto Rico to London Heathrow Airport in 12h 25m. Fly via United Airlines, British Airways, or Delta to get the fastest option. There are 4179 mi between Puerto Rico and London Heathrow Airport. This flight may include one or multiple stops.
What are the most popular routes from Puerto Rico to London Heathrow Airport?
The most popular flight routes from Puerto Rico to London Heathrow Airport are San Juan Luis Munoz Marin Intl - London Heathrow, Ponce Mercedita - London Heathrow and Culebra - London Heathrow.
Can I find deals for flights from Puerto Rico to Heathrow that include hotel bookings?
Yes. In addition to deals on Puerto Rico to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Puerto Rico to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Heathrow.
Can I find deals for business class flights from Puerto Rico to Heathrow?
Yes. Cheapflights offers flight deals from Puerto Rico 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 Puerto Rico to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £593). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £855). 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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Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Puerto Rico to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Puerto Rico to Heathrow with no change fees?

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Can Cheapflights notify me if prices for flights from Puerto Rico to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Puerto Rico to London Heathrow Airport from £198

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Puerto Rico to Heathrow

Cheapest flights from Puerto Rico to HeathrowExplore the most affordable flight options available from Puerto Rico to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2026.

Explore the most affordable flight options available from Puerto Rico to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2026.

Best flights from Puerto Rico to HeathrowDiscover carefully curated flight deals from Puerto Rico to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 November 2026.

Discover carefully curated flight deals from Puerto Rico to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 November 2026.

Last-minute flights from Puerto Rico to HeathrowDiscover last-minute flight deals from Puerto Rico to Heathrow. Data last updated 14 November 2026 and is based on user searches.

Discover last-minute flight deals from Puerto Rico to Heathrow. Data last updated 14 November 2026 and is based on user searches.

One-way flights from Puerto Rico to HeathrowSearch for one-way flight options from Puerto Rico to Heathrow. Find affordable one-way fares based on user searches. Data last updated 14 November 2026.

Search for one-way flight options from Puerto Rico to Heathrow. Find affordable one-way fares based on user searches. Data last updated 14 November 2026.

Find flight deals from Puerto Rico to Heathrow

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Use the filters below to find and compare flights from Puerto Rico to London Heathrow Airport that are best for you.

Best time to book a flight from Puerto Rico to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Puerto Rico with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Puerto Rico to London Heathrow Airport?

How far ahead should I book a flight from Puerto Rico to London Heathrow Airport?

The price you pay for your flight from Puerto Rico to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

How long is the flight from Puerto Rico to London Heathrow Airport?

What are the most popular routes from Puerto Rico to London Heathrow Airport?

Can I find deals for flights from Puerto Rico to Heathrow that include hotel bookings?

How can I find direct flights from Puerto Rico to Heathrow?

Can I find deals for business class flights from Puerto Rico to Heathrow?

What is the cheapest month to book a flight from Puerto Rico to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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Alternative routes for Puerto Rico to Heathrow

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Complete your trip

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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 14 November 2026.

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How does Cheapflights help users find flights from Puerto Rico to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to Heathrow?

Can Cheapflights find flights from Puerto Rico to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Puerto Rico to Heathrow become cheaper?

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Cheapest flights from Puerto Rico to Heathrow
Explore the most affordable flight options available from Puerto Rico to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2026.

Best flights from Puerto Rico to Heathrow
Discover carefully curated flight deals from Puerto Rico to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 November 2026.

Last-minute flights from Puerto Rico to Heathrow
Discover last-minute flight deals from Puerto Rico to Heathrow. Data last updated 14 November 2026 and is based on user searches.

One-way flights from Puerto Rico to Heathrow
Search for one-way flight options from Puerto Rico to Heathrow. Find affordable one-way fares based on user searches. Data last updated 14 November 2026.