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Cheap flights from Puerto Rico to London Heathrow Airport from £231

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 16 January 2026.

Round-trip from

£413

One-way from

£231

Popular in

June

Cheapest in

February

Average price

£467
KLM
  • KLM
  • 18/2-27/2
  • 2 total stops
  • 35h 14m total
  • Puerto Rico to London
Search Deals
JetBlue
  • JetBlue
  • 11/5
  • 1 total stop
  • 12h 30m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£108 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 January 2026
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Find 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 16 January 2026.

Mon 5/1017:50
SJU
-
LHR
1 stop13h 45m
American Airlines
Fri 16/1006:10
LHR
-
SJU
1 stop14h 15m
American Airlines
Deal found 14/1£412
Wed 18/214:12
SJU
-
LHR
1 stop14h 48m
KLM
Thu 26/210:45
LHR
-
SJU
1 stop14h 27m
KLM
Deal found 14/1£413
Tue 17/206:15
SJU
-
LHR
1 stop22h 45m
Delta
Mon 2/310:00
LHR
-
SJU
2 stops17h 56m
Delta
Deal found 14/1£415
Fri 13/219:01
SJU
-
LHR
1 stop13h 04m
Iberia
Sat 21/211:25
LHR
-
SJU
1 stop12h 30m
Iberia
Deal found 15/1£418
Tue 17/202:05
SJU
-
LHR
1 stop15h 15m
United Airlines
Thu 26/208:30
LHR
-
SJU
2 stops17h 52m
United Airlines
Deal found 15/1£419
Wed 18/218:37
SJU
-
LHR
1 stop13h 03m
Delta
Fri 27/210:10
LHR
-
SJU
2 stops17h 48m
Delta
Deal found 14/1£421
Tue 21/401:00
SJU
-
LHR
2 stops24h 30m
Air Canada
Wed 29/409:30
LHR
-
SJU
2 stops19h 20m
Air Canada
Deal found 14/1£424
Mon 9/309:15
SJU
-
LHR
1 stop18h 15m
United Airlines
Fri 20/310:00
LHR
-
SJU
1 stop38h 26m
United Airlines
Deal found 15/1£425
Tue 31/318:01
SJU
-
LHR
1 stop13h 34m
British Airways
Tue 7/409:15
LHR
-
SJU
1 stop17h 50m
British Airways
Deal found 14/1£426
Thu 22/113:24
SJU
-
LHR
1 stop18h 56m
British Airways
Thu 29/107:50
LHR
-
SJU
2 stops20h 06m
British Airways
Deal found 13/1£428
Sat 14/214:44
SJU
-
LHR
1 stop14h 31m
American Airlines
Sat 21/207:30
LHR
-
SJU
1 stop16h 25m
American Airlines
Deal found 15/1£429
Sat 28/210:15
SJU
-
LHR
1 stop17h 15m
United Airlines
Sat 7/306:50
LHR
-
SJU
2 stops19h 32m
United Airlines
Deal found 14/1£430

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 16 January 2026.
Use the filters below to find and compare flights from Puerto Rico to London Heathrow Airport that are best for you.

Fly from

Puerto Rico

Fly to

Heathrow

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/2

06:15-09:00

1 stop22h 45m

London Heathrow

Mon 2/3

10:00-23:56

2 stops17h 56m

£415

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

07:20-06:55

1 stop18h 35m

London Heathrow

Wed 29/4

12:15-21:24

1 stop14h 09m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:15-10:20

1 stop16h 05m

London Heathrow

Wed 29/4

09:20-22:54

1 stop18h 34m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 14/4

13:25-06:50

1 stop12h 25m

London Heathrow

Fri 24/4

12:15-21:24

1 stop14h 09m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 2/2

11:38-12:20

1 stop20h 42m

London Heathrow

Mon 9/2

07:50-23:56

2 stops20h 06m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 31/3

07:00-07:40

1 stop19h 40m

London Heathrow

Tue 7/4

14:05-12:34

2 stops27h 29m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 15/4

12:50-11:20

2 stops17h 30m

London Heathrow

Fri 24/4

09:20-20:06

1 stop15h 46m

£433

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 14/2

14:57-09:05

1 stop14h 08m

London Heathrow

Sat 21/2

08:55-23:58

1 stop19h 03m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 14/2

16:52-11:15

1 stop14h 23m

London Heathrow

Sat 21/2

08:00-22:22

2 stops18h 22m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/3

07:05-10:50

1 stop23h 45m

London Heathrow

Fri 20/3

16:20-21:22

1 stop33h 02m

£444

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 16 results
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, September is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £75). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £729). 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.

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 16h 05m. Fly via Delta, United Airlines, or KLM 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, September is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £75). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £729). 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
Milton Keynes
Croydon
Luton
Northampton
Slough
Gatwick
Hounslow
Wembley
Ilford
Brentford
Hayes
Colchester
Watford
Crawley
Kingston upon Thames
Swindon
Bedford
Chelmsford
Eastbourne
Romford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Puerto Rico to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Bridgetown to Heathrow flights
Luis Munoz Marin Intl to Heathrow flights
Nassau to Heathrow flights
Kingston to Heathrow flights
Montego Bay to Heathrow flights
Kingston to Gatwick flights
Port of Spain to Heathrow flights
Luis Munoz Marin Intl to Gatwick flights
St. George's to Heathrow flights
Bridgetown to Gatwick flights
Port of Spain to Gatwick flights
Punta Cana to Gatwick flights
Bridgetown to London City flights
St. George's to Gatwick flights
Nassau to Gatwick flights
Montego Bay to Gatwick flights
Castries to Heathrow flights
George Town to Heathrow flights
Santo Domingo to Gatwick flights
Santo Domingo to Heathrow flights
St. John's to Heathrow flights
Port of Spain to Stansted flights
Castries to Gatwick flights
Montego Bay to London City flights
St. John's to Gatwick flights
Punta Cana to Heathrow flights
Road Town to Heathrow flights
George Town to Gatwick flights
Kingston to Stansted flights
Road Town to Gatwick flights
Scarborough to Heathrow flights
Basseterre to Gatwick flights
Havana to Heathrow flights
Providenciales to Heathrow flights
Castries to London City flights
Saint Thomas Island to Heathrow flights
Kingstown to Gatwick flights

Fly with Cheapflights

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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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