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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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
2 Aug — 9 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 3 July 2026.

Tue 10/1115:46
SJU
-
LHR
1 stop35h 54m
United Airlines
Fri 13/1106:50
LHR
-
SJU
2 stops21h 46m
United Airlines
Deal found 29/6£518
Sun 11/1016:55
SJU
-
LHR
2 stops36h 05m
United Airlines
Wed 14/1006:50
LHR
-
SJU
2 stops22h 00m
United Airlines
Deal found 2/7£521
Sat 14/1118:30
SJU
-
LHR
1 stop21h 30m
Virgin Atlantic
Wed 18/1119:25
LHR
-
SJU
2 stops31h 48m
Virgin Atlantic
Deal found 29/6£548
Mon 16/1114:05
SJU
-
LHR
1 stop15h 15m
Virgin Atlantic
Fri 20/1106:20
LHR
-
SJU
2 stops20h 53m
Virgin Atlantic
Deal found 1/7£557
Sat 14/1118:42
SJU
-
LHR
1 stop13h 23m
Iberia
Wed 18/1107:35
LHR
-
SJU
1 stop13h 05m
Iberia
Deal found 29/6£569
Sun 11/1012:46
SJU
-
LHR
1 stop13h 29m
Virgin Atlantic
Wed 14/1012:50
LHR
-
SJU
1 stop16h 06m
Virgin Atlantic
Deal found 2/7£573
Thu 26/1114:05
SJU
-
LHR
1 stop12h 50m
Virgin Atlantic
Thu 3/1219:20
LHR
-
SJU
2 stops32h 00m
Virgin Atlantic
Deal found 30/6£578

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 3 July 2026.

Round-trip from

£518

One-way from

£203

Popular in

June

Cheapest in

February

Average price

£688
United Airlines
  • United Airlines
  • 10/11-13/11
  • 3 total stops
  • 57h 40m total
  • Puerto Rico to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 5/10
  • 1 total stop
  • 21h 50m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£115 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 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 3 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

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 28/10

14:05-12:00

2 stops17h 55m

London Heathrow

Tue 10/11

06:50-22:22

2 stops19h 32m

£617

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 16/11

15:35-13:45

2 stops18h 10m

London Heathrow

Fri 20/11

09:40-23:55

2 stops18h 15m

£632
Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 10/11

17:50-10:50

1 stop13h 00m

London Heathrow

Fri 13/11

12:50-00:36

1 stop15h 46m

£636

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 24/8

17:49-13:15

1 stop14h 26m

London Heathrow

Mon 7/9

09:55-22:29

2 stops17h 34m

£665

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 24/9

14:59-13:15

1 stop17h 16m

London Heathrow

Mon 28/9

11:45-23:48

2 stops17h 03m

£676

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/11

14:05-10:15

1 stop16h 10m

London Heathrow

Sat 28/11

09:40-23:55

2 stops18h 15m

£686

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 28/8

01:00-20:40

1 stop14h 40m

London Heathrow

Tue 8/9

06:50-23:50

2 stops22h 00m

£693

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

14:59-11:20

1 stop15h 21m

London Heathrow

Mon 17/8

11:45-23:52

2 stops17h 07m

£694

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 24/8

14:59-13:05

2 stops17h 06m

London Heathrow

Mon 7/9

18:35-13:47

2 stops24h 12m

£696

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/11

07:30-06:20

2 stops18h 50m

London Heathrow

Mon 9/11

20:00-14:20

2 stops22h 20m

£706

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 18 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, February is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £76). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £645). 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 49 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 14h 05m. Fly via KLM, Delta, or United Airlines 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, February is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £76). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £645). 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
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Swindon
Eastbourne
Poole
Southall
Aylesbury
Romford

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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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