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Cheap flights from Puerto Rico to London Heathrow Airport from £264

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
4 1月 — 11 1月1
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 5 12月 2025.

週五 12/1208:10SJU - LHR
2 stops19h 00mUnited Airlines
週一 15/1207:55LHR - SJU
1 stop17h 05mUnited Airlines
Deal found 3/12£486
週六 13/1218:38SJU - LHR
1 stop33h 12mDelta
週一 22/1216:35LHR - SJU
1 stop13h 52mDelta
Deal found 2/12£543
週日 14/1213:55SJU - LHR
1 stop17h 45mMultiple Airlines
週日 21/1216:35LHR - SJU
1 stop13h 52mMultiple Airlines
Deal found 2/12£546
週一 29/1201:59SJU - LHR
1 stop15h 41mJetBlue
週三 7/107:25LHR - SJU
1 stop16h 01mJetBlue
Deal found 5/12£546
週二 30/1203:45SJU - LHR
1 stop22h 35mDelta
週三 7/108:55LHR - SJU
1 stop19h 02mDelta
Deal found 3/12£548
週日 14/1208:30SJU - LHR
2 stops17h 25mUnited Airlines
週一 22/1216:20LHR - SJU
1 stop34h 02mUnited Airlines
Deal found 2/12£574
週三 31/1210:15SJU - LHR
1 stop20h 00mLufthansa
週四 8/109:10LHR - SJU
1 stop19h 26mLufthansa
Deal found 4/12£579
週三 31/1216:52SJU - LHR
1 stop14h 23mUnited Airlines
週四 8/109:10LHR - SJU
2 stops17h 12mUnited Airlines
Deal found 4/12£585
週日 14/1202:05SJU - LHR
1 stop15h 15mUnited Airlines
週六 27/1207:40LHR - SJU
1 stop17h 20mUnited Airlines
Deal found 3/12£640
週三 31/1214:08SJU - LHR
1 stop12h 42mKLM
週三 7/120:00LHR - SJU
1 stop31h 57mKLM
Deal found 4/12£644

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 5 12月 2025.

Round-trip from

£411

One-way from

£264

Popular in

June

Cheapest in

February

Average price

£657
Lufthansa
  • Lufthansa
  • 18/2-27/2
  • 2 total stops
  • 43h 56m total
  • Puerto Rico to London
Search Deals
United Airlines
  • United Airlines
  • 7/1
  • 1 total stop
  • 17h 20m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£93 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 5 12月 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

週三 18/2

07:30-08:45

2 stops21h 15m

London Heathrow

週四 26/2

10:10-23:58

2 stops17h 48m

£420

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 22/1

17:51-12:20

1 stop14h 29m

London Heathrow

週四 29/1

10:45-19:55

1 stop13h 10m

£423

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週三 29/4

07:20-06:55

1 stop18h 35m

London Heathrow

週一 4/5

17:50-21:24

2 stops32h 34m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 15/1

17:50-10:50

1 stop13h 00m

London Heathrow

週四 22/1

06:50-22:22

2 stops19h 32m

£429

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週五 13/2

07:45-10:15

1 stop22h 30m

London Heathrow

週六 21/2

06:30-22:22

2 stops19h 52m

£431

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 15/1

14:15-09:00

1 stop14h 45m

London Heathrow

週四 22/1

08:55-23:45

1 stop18h 50m

£432

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 22/1

17:50-10:50

1 stop13h 00m

London Heathrow

週四 29/1

09:10-22:22

2 stops17h 12m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週二 17/2

02:05-21:20

1 stop15h 15m

London Heathrow

週四 26/2

08:30-22:22

2 stops17h 52m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週五 30/1

14:15-08:25

1 stop14h 10m

London Heathrow

週一 2/2

08:30-22:22

2 stops17h 52m

£437

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

週六 17/1

16:10-06:55

2 stops34h 45m

London Heathrow

週六 24/1

19:10-15:13

2 stops24h 03m

£2,786

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 17 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 £736). 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 14h 29m. Fly via Delta, Iberia, 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 £736). 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
Northampton
Hounslow
Slough
Gatwick
Luton
Ilford
Wembley
Colchester
Brentford
Watford
Hayes
Crawley
Deal
Winchester
Swindon
Romford
Bedford
Chichester

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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
Kingston to Heathrow flights
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St. George's to Heathrow flights
Port of Spain to Heathrow flights
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Kingston to Gatwick flights
Bridgetown to London City flights
Santo Domingo to Heathrow flights
Port of Spain to Gatwick flights
Montego Bay to Heathrow flights
Road Town to Heathrow flights
Santo Domingo to Gatwick flights
Road Town to Gatwick flights
George Town to Heathrow flights
Punta Cana to Heathrow flights
Montego Bay to Gatwick flights
Providenciales to Heathrow flights
Scarborough to Gatwick flights
St. John's to Heathrow flights
Castries to Gatwick flights
Nassau to Gatwick flights
Scarborough to Heathrow flights
George Town to Gatwick flights
Montego Bay to London City flights
Havana to Heathrow flights
Oranjestad to Heathrow flights
Kingston to Stansted flights
Montego Bay to Luton flights
Port of Spain to Stansted flights
Pointe-à-Pitre to Gatwick flights
Simpson Bay to Heathrow 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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