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Cheap flights from Puerto Rico to London Heathrow Airport from £225

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
15 Nov — 22 Nov1
1 adult
1 adult, Economy

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 October 2025.

Round-trip from

£402

One-way from

£225

Popular in

June

Cheapest in

January

Average price

£499
KLM
  • KLM
  • 9/11-20/11
  • 2 total stops
  • 32h 49m total
  • Puerto Rico to London
Search Deals
7/11
  • 7/11
  • 2 total stops
  • 18h 36m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 2025.

Mon 20/1014:31SJU - LHR
1 stop15h 39mVirgin Atlantic
Tue 4/1114:30LHR - SJU
1 stop14h 26mVirgin Atlantic
Deal found 13/10£386
Mon 20/1017:43SJU - LHR
1 stop14h 47mKLM
Tue 4/1108:40LHR - SJU
2 stops18h 19mKLM
Deal found 13/10£394
Sun 19/1007:00SJU - LHR
1 stop20h 50mDelta
Tue 4/1108:55LHR - SJU
2 stops20h 01mDelta
Deal found 13/10£401
Sun 9/1113:57SJU - LHR
1 stop15h 03mKLM
Thu 20/1110:10LHR - SJU
1 stop17h 46mKLM
Deal found 15/10£402
Sun 19/1013:06SJU - LHR
1 stop14h 44mKLM
Tue 4/1108:55LHR - SJU
1 stop18h 04mKLM
Deal found 13/10£403
Tue 2/1214:10SJU - LHR
1 stop16h 05mKLM
Thu 18/1208:55LHR - SJU
1 stop18h 25mKLM
Deal found 15/10£408
Wed 29/1007:15SJU - LHR
2 stops21h 30mDelta
Fri 7/1108:55LHR - SJU
2 stops18h 04mDelta
Deal found 15/10£416
Mon 1/1202:05SJU - LHR
1 stop14h 30mUnited Airlines
Wed 10/1206:50LHR - SJU
2 stops19h 32mUnited Airlines
Deal found 15/10£424
Tue 2/1202:05SJU - LHR
2 stops25h 05mUnited Airlines
Thu 11/1207:30LHR - SJU
2 stops18h 52mUnited Airlines
Deal found 14/10£432
Mon 10/1102:05SJU - LHR
1 stop15h 15mUnited Airlines
Thu 20/1112:45LHR - SJU
1 stop15h 51mUnited Airlines
Deal found 14/10£439

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 October 2025.
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 2/12

13:55-07:50

1 stop13h 55m

London Heathrow

Thu 18/12

08:55-23:20

1 stop18h 25m

£408

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

17:43-11:40

1 stop13h 57m

London Heathrow

Thu 6/11

08:55-22:59

1 stop18h 04m

£408

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/12

07:15-06:20

1 stop19h 05m

London Heathrow

Wed 10/12

16:10-12:45

2 stops24h 35m

£416

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/12

14:10-10:50

2 stops16h 40m

London Heathrow

Wed 10/12

06:50-22:22

2 stops19h 32m

£427

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

17:50-10:50

1 stop13h 00m

London Heathrow

Thu 26/2

08:30-00:36

2 stops20h 06m

£438

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 28/11

17:50-10:50

1 stop13h 00m

London Heathrow

Fri 5/12

06:50-21:00

2 stops18h 10m

£443

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 14/11

14:10-09:20

1 stop15h 10m

London Heathrow

Fri 21/11

20:00-12:56

1 stop20h 56m

£446

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 4/12

14:10-10:15

1 stop16h 05m

London Heathrow

Thu 11/12

08:55-23:20

1 stop18h 25m

£446

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/12

02:05-21:20

1 stop15h 15m

London Heathrow

Thu 18/12

12:45-00:36

1 stop15h 51m

£446

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

12:50-06:50

1 stop14h 00m

London Heathrow

Thu 26/2

11:55-23:20

1 stop15h 25m

£452

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 18 results
1
2

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 £76). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £735). 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.

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

Find hourly flight availability from Puerto Rico to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 October 2025.

When flying from Puerto Rico to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 59% versus a flight in the evening.

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 13h 55m. 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, September 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 £735). 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
Slough
Gatwick
Hounslow
Northampton
Luton
Wembley
Deal
Ilford
Crawley
Hayes
Watford
Winchester
Swindon
Chichester
Romford
Ipswich
Brentford
Dartford

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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.
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Road Town to Gatwick flights
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Punta Cana to Gatwick flights
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Montego Bay to London City flights
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George Town to Gatwick flights
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Kingstown to Gatwick flights
Willemstad to Gatwick flights
Simpson Bay to Gatwick flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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