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Cheap flights from Puerto Rico to London Heathrow Airport from £203

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
20 Aug — 27 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Puerto Rico to Heathrow

Enter your travel dates to find the best prices.

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 21 July 2026.

Tue 18/808:48
PSE
-
LHR
2 stops25h 12m
Multiple Airlines
Mon 24/819:35
LHR
-
PSE
2 stops41h 23m
Multiple Airlines
Deal found 20/7£506
Sun 23/808:48
PSE
-
LHR
2 stops30h 32m
Multiple Airlines
Sun 30/808:50
LHR
-
PSE
2 stops28h 08m
Multiple Airlines
Deal found 17/7£507
Sun 15/1116:55
SJU
-
LHR
1 stop35h 00m
United Airlines
Wed 18/1106:50
LHR
-
SJU
2 stops21h 46m
United Airlines
Deal found 18/7£549
Tue 20/1013:06
SJU
-
LHR
1 stop14h 44m
Virgin Atlantic
Tue 27/1008:55
LHR
-
SJU
1 stop17h 04m
Virgin Atlantic
Deal found 18/7£569
Mon 16/1113:18
SJU
-
LHR
1 stop13h 32m
Iberia
Fri 20/1109:45
LHR
-
SJU
1 stop15h 42m
Iberia
Deal found 19/7£578
Thu 26/1115:35
SJU
-
LHR
1 stop13h 25m
Virgin Atlantic
Thu 3/1215:50
LHR
-
SJU
1 stop29h 30m
Virgin Atlantic
Deal found 19/7£582
Tue 8/913:16
SJU
-
LHR
1 stop14h 34m
Virgin Atlantic
Tue 15/909:20
LHR
-
SJU
1 stop17h 59m
Virgin Atlantic
Deal found 19/7£589
Wed 11/1116:37
SJU
-
LHR
1 stop15h 28m
Iberia
Tue 24/1107:30
LHR
-
SJU
1 stop13h 10m
Iberia
Deal found 17/7£601
Sun 15/1116:44
SJU
-
LHR
1 stop14h 56m
American Airlines
Wed 18/1106:15
LHR
-
SJU
1 stop17h 45m
American Airlines
Deal found 18/7£607

Find flight deals from Puerto Rico to Heathrow

Keep the following information in mind while searching for Puerto Rico to Heathrow flight deals. Data was last updated 21 July 2026.

Round-trip from

£506

One-way from

£203

Popular in

June

Cheapest in

February

Average price

£707
18/8-24/8
  • 18/8-24/8
  • 4 total stops
  • 66h 35m total
  • Puerto Rico to London
Search Deals
Iberia
  • Iberia
  • 16/11
  • 1 total stop
  • 13h 10m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Puerto Rico to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 July 2026.
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

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Tue 18/8

08:48-15:00

2 stops25h 12m

London Heathrow

Mon 24/8

19:35-07:58

2 stops41h 23m

£506

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Sun 23/8

08:48-20:20

2 stops30h 32m

London Heathrow

Sun 30/8

08:50-07:58

2 stops28h 08m

£507

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 20/10

07:00-07:55

1 stop19h 55m

London Heathrow

Tue 27/10

06:50-23:36

2 stops20h 46m

£612

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 8/9

01:00-06:30

2 stops24h 30m

London Heathrow

Tue 22/9

06:50-23:50

2 stops22h 00m

£657
Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 14/8

15:28-09:25

1 stop12h 57m

London Heathrow

Mon 24/8

07:50-15:25

1 stop12h 35m

£667

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 11/10

13:06-06:45

1 stop12h 39m

London Heathrow

Sun 18/10

18:35-11:56

1 stop22h 21m

£677

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 11/9

16:55-10:40

1 stop12h 45m

London Heathrow

Sun 20/9

06:50-23:50

2 stops22h 00m

£677

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 24/9

13:25-10:40

2 stops16h 15m

London Heathrow

Mon 28/9

06:50-23:50

2 stops22h 00m

£681

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 22/11

19:35-20:35

1 stop21h 00m

London Heathrow

Mon 30/11

16:00-13:17

2 stops25h 17m

£705
Cheapest one-way

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 16/11

13:00-10:50

2 stops17h 50m

£228

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 17 resultsSorted by cheapest first
1
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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.
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

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

Currently, October is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £535). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £841). 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 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 57m. Fly via United Airlines or Iberia 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, Culebra - London Heathrow and Ponce Mercedita - 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, October is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £535). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £841). 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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

Cheapflights helps you search for flights from Puerto Rico to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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?

Yes, we can. To see specific flights from Puerto Rico to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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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