Find flights
When to book
FAQs

Cheap flights from Puerto Rico to London Heathrow Airport from £233

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
27 Dec — 3 Jan1
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 27 November 2025.

Round-trip from

£407

One-way from

£233

Popular in

June

Cheapest in

February

Average price

£544
Iberia
  • Iberia
  • 24/2-4/3
  • 2 total stops
  • 27h 04m total
  • Puerto Rico to London
Search Deals
8/1
  • 8/1
  • 2 total stops
  • 30h 20m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£95 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 27 November 2025.

Tue 30/1210:15SJU - LHR
1 stop17h 15mUnited Airlines
Fri 9/116:20LHR - SJU
1 stop24h 57mUnited Airlines
Deal found 25/11£448
Wed 31/1214:45SJU - LHR
1 stop13h 20mKLM
Wed 7/110:10LHR - SJU
1 stop17h 47mKLM
Deal found 25/11£518
Mon 29/1202:05SJU - LHR
2 stops24h 35mUnited Airlines
Thu 8/112:05LHR - SJU
1 stop14h 17mUnited Airlines
Deal found 25/11£521
Mon 29/1203:45SJU - LHR
1 stop22h 35mDelta
Fri 9/109:40LHR - SJU
1 stop31h 31mDelta
Deal found 25/11£528
Thu 25/1208:10SJU - LHR
1 stop17h 45mUnited Airlines
Fri 9/116:20LHR - SJU
1 stop24h 57mUnited Airlines
Deal found 25/11£564
Tue 23/1214:15SJU - LHR
1 stop27h 05mLufthansa
Fri 9/118:00LHR - SJU
1 stop34h 36mLufthansa
Deal found 25/11£584
Tue 2/1214:10SJU - LHR
1 stop14h 15mLufthansa
Thu 18/1212:45LHR - SJU
1 stop15h 51mLufthansa
Deal found 25/11£585
Wed 24/1213:07SJU - LHR
1 stop14h 43mKLM
Thu 8/110:10LHR - SJU
1 stop17h 47mKLM
Deal found 25/11£587
Mon 1/1202:05SJU - LHR
1 stop14h 30mUnited Airlines
Thu 18/1212:45LHR - SJU
1 stop15h 51mUnited Airlines
Deal found 25/11£588
Wed 24/1208:30SJU - LHR
2 stops17h 25mUnited Airlines
Thu 8/109:10LHR - SJU
2 stops17h 12mUnited Airlines
Deal found 25/11£590

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 27 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

Tue 24/2

08:35-07:55

1 stop19h 20m

London Heathrow

Wed 4/3

06:50-22:22

2 stops19h 32m

£409

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

15:55-11:40

1 stop15h 45m

London Heathrow

Thu 29/1

12:40-23:57

1 stop15h 17m

£428

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 23/1

06:09-06:25

1 stop20h 16m

London Heathrow

Tue 27/1

06:20-20:58

2 stops18h 38m

£431

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

16:52-11:15

1 stop14h 23m

London Heathrow

Thu 29/1

09:10-22:22

2 stops17h 12m

£439

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 13/2

08:35-05:55

1 stop17h 20m

London Heathrow

Sat 21/2

07:30-22:22

2 stops18h 52m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 8/1

02:05-21:20

1 stop15h 15m

London Heathrow

Fri 16/1

06:30-22:22

2 stops19h 52m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/2

02:05-20:35

1 stop14h 30m

London Heathrow

Thu 26/2

08:30-22:22

2 stops17h 52m

£441

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 8/1

07:10-17:30

2 stops30h 20m

£233

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 6/3

23:59-22:00

1 stop18h 01m

£247

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 7/3

05:10-22:00

1 stop12h 50m

£247

Flights are sorted by cheapest return flights first.

Deals found on 26/11

Showing 1-10 of 21 results
1
2
3

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 £744). 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 15h 45m. Fly via United Airlines, KLM, or Virgin Atlantic 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 £744). 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
Slough
Croydon
Hounslow
Northampton
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Brentford
Winchester
Swindon
Crawley
Romford
Chichester
Bedford

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

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.