Find flights
When to book
FAQs

Cheap flights from Puerto Rico to London Heathrow Airport from £236

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 28/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
14 Dec — 21 Dec1
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 14 November 2025.

Round-trip from

£426

One-way from

£236

Popular in

June

Cheapest in

February

Average price

£546
American Airlines
  • American Airlines
  • 24/11-9/12
  • 2 total stops
  • 27h 15m total
  • Puerto Rico to London
Search Deals
JetBlue
  • JetBlue
  • 14/2
  • 1 total stop
  • 16h 55m 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 November 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 14 November 2025.

Wed 12/1114:10SJU - LHR
1 stop16h 05mKLM
Wed 19/1108:55LHR - SJU
1 stop18h 18mKLM
Deal found 11/11£407
Mon 29/1216:45SJU - LHR
1 stop34h 20mDelta
Fri 9/116:10LHR - SJU
1 stop28h 42mDelta
Deal found 11/11£410
Tue 11/1118:35SJU - LHR
1 stop21h 35mDelta
Thu 20/1112:30LHR - SJU
1 stop14h 43mDelta
Deal found 11/11£417
Mon 24/1115:05SJU - LHR
1 stop14h 10mAmerican Airlines
Tue 9/1207:30LHR - SJU
1 stop13h 05mAmerican Airlines
Deal found 12/11£426
Wed 12/1108:30SJU - LHR
2 stops20h 50mUnited Airlines
Wed 19/1106:50LHR - SJU
2 stops19h 32mUnited Airlines
Deal found 11/11£429
Mon 1/1217:50SJU - LHR
1 stop32h 50mUnited Airlines
Mon 8/1213:50LHR - SJU
2 stops36h 32mUnited Airlines
Deal found 13/11£435
Mon 24/1114:20SJU - LHR
1 stop14h 05mUnited Airlines
Tue 9/1209:10LHR - SJU
2 stops17h 12mUnited Airlines
Deal found 12/11£445
Tue 9/1214:10SJU - LHR
2 stops16h 40mUnited Airlines
Tue 16/1212:05LHR - SJU
1 stop14h 17mUnited Airlines
Deal found 10/11£451
Fri 26/1205:01PSE - LHR
1 stop24h 29mJetBlue
Fri 2/108:05LHR - PSE
1 stop23h 01mJetBlue
Deal found 10/11£1,556

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 14 November 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

Thu 15/1

18:24-11:40

1 stop13h 16m

London Heathrow

Mon 19/1

10:00-23:59

2 stops17h 59m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 15/1

18:27-06:25

1 stop31h 58m

London Heathrow

Mon 19/1

10:00-23:59

2 stops17h 59m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

08:35-07:55

1 stop19h 20m

London Heathrow

Fri 27/2

07:30-22:22

2 stops18h 52m

£443

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 21/1

02:05-21:20

1 stop15h 15m

London Heathrow

Thu 29/1

08:30-22:22

2 stops17h 52m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 14/1

02:05-20:35

1 stop14h 30m

London Heathrow

Mon 19/1

09:30-00:36

2 stops19h 06m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 16/1

08:35-05:55

1 stop17h 20m

London Heathrow

Mon 26/1

08:30-22:22

2 stops17h 52m

£444

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Fri 26/12

05:01-09:30

1 stop24h 29m

London Heathrow

Fri 2/1

08:05-03:06

1 stop23h 01m

£1,556

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 28/3

05:15-04:55

1 stop19h 40m

£236

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 26/3

00:59-20:45

1 stop15h 46m

£236

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 12/1

11:15-09:30

1 stop18h 15m

£245

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 15 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 £77). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £746). 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 14 November 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 16m. Fly via Virgin Atlantic, 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 £77). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £746). 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
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Luis Munoz Marin Intl to Gatwick flights
Nassau to Heathrow flights
Bridgetown to Gatwick flights
Kingston to Heathrow flights
Montego Bay to Heathrow flights
Bridgetown to London City flights
Port of Spain to Heathrow flights
Punta Cana to Gatwick flights
Nassau to Gatwick flights
Punta Cana to Heathrow flights
George Town to Heathrow flights
St. George's to Gatwick flights
Port of Spain to Gatwick flights
Santo Domingo to Gatwick flights
Santo Domingo to Heathrow flights
St. George's to Heathrow flights
Road Town to Gatwick flights
George Town to Gatwick flights
Montego Bay to Gatwick flights
Kingston to Gatwick flights
Castries to Gatwick flights
St. John's to Gatwick flights
Castries to Heathrow flights
Port of Spain to Stansted flights
Road Town to Heathrow flights
Providenciales to Heathrow flights
Castries to London City flights
Simpson Bay to Heathrow flights
Havana to Heathrow flights
Scarborough to Gatwick flights
St. John's to Heathrow flights
Montego Bay to London City flights
Willemstad to Gatwick flights
Willemstad to Heathrow 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.