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Cheap flights from Puerto Rico to London Heathrow Airport from £195

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 26/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
15 Oct — 22 Oct1
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 15 September 2025.

Round-trip from

£389

One-way from

£195

Popular in

June

Cheapest in

February

Average price

£517
Lufthansa
  • Lufthansa
  • 6/10-21/10
  • 2 total stops
  • 31h 32m total
  • Puerto Rico to London
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26/10
  • 26/10
  • 2 total stops
  • 36h 05m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£80 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 September 2025
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Find flight deals from Puerto Rico to Heathrow

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 15 September 2025.

Mon 6/1001:05SJU - LHR
1 stop14h 35mLufthansa
Tue 21/1012:00LHR - SJU
1 stop16h 57mLufthansa
Deal found 15/9£389
Wed 29/1013:06SJU - LHR
1 stop13h 14mVirgin Atlantic
Wed 5/1110:10LHR - SJU
1 stop18h 46mVirgin Atlantic
Deal found 14/9£401
Sun 21/916:55SJU - LHR
1 stop33h 00mMultiple Airlines
Tue 7/1018:00LHR - SJU
1 stop23h 00mMultiple Airlines
Deal found 13/9£408
Sun 21/916:55SJU - LHR
1 stop12h 45mUnited Airlines
Tue 7/1007:45LHR - SJU
2 stops21h 12mUnited Airlines
Deal found 13/9£413
Sun 9/1113:57SJU - LHR
1 stop15h 03mKLM
Thu 20/1115:50LHR - SJU
1 stop24h 56mKLM
Deal found 15/9£419
Wed 24/915:56SJU - LHR
1 stop14h 49mUnited Airlines
Wed 1/1009:30LHR - SJU
2 stops19h 27mUnited Airlines
Deal found 15/9£426
Wed 29/1015:52SJU - LHR
1 stop15h 23mUnited Airlines
Tue 4/1109:10LHR - SJU
2 stops17h 12mUnited Airlines
Deal found 15/9£429
Wed 29/1007:15SJU - LHR
2 stops21h 30mDelta
Fri 7/1112:40LHR - SJU
1 stop16h 16mDelta
Deal found 15/9£434
Mon 13/1001:05SJU - LHR
1 stop14h 35mUnited Airlines
Tue 21/1009:30LHR - SJU
2 stops19h 27mUnited Airlines
Deal found 15/9£450
Wed 29/1013:20SJU - LHR
2 stops17h 30mUnited Airlines
Wed 5/1107:30LHR - SJU
2 stops18h 52mUnited Airlines
Deal found 14/9£451

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 15 September 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

Sun 9/11

13:57-09:00

1 stop15h 03m

London Heathrow

Thu 20/11

10:10-23:56

1 stop17h 46m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 10/11

02:05-21:20

1 stop15h 15m

London Heathrow

Thu 20/11

12:50-00:36

1 stop15h 46m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 14/10

13:06-08:50

1 stop14h 44m

London Heathrow

Tue 21/10

10:55-23:56

1 stop18h 01m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 1/10

13:25-06:45

1 stop12h 20m

London Heathrow

Wed 8/10

10:55-23:56

1 stop18h 01m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 15/10

17:43-13:30

1 stop14h 47m

London Heathrow

Wed 22/10

09:20-21:59

1 stop17h 39m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

14:31-09:00

1 stop14h 29m

London Heathrow

Fri 7/11

10:10-00:56

1 stop18h 46m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

17:43-11:40

1 stop13h 57m

London Heathrow

Tue 4/11

08:55-22:59

1 stop18h 04m

£426

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 6/10

01:05-20:40

1 stop14h 35m

London Heathrow

Tue 21/10

08:30-23:57

2 stops20h 27m

£429

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

15:52-11:15

1 stop15h 23m

London Heathrow

Tue 4/11

09:10-22:22

2 stops17h 12m

£429

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 12/10

06:22-22:00

2 stops34h 38m

£198

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 16 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, January is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £112). Flying from Puerto Rico to London Heathrow Airport in August is currently the most expensive (average of £164). 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 15 September 2025.

When flying from Puerto Rico to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 03m. Fly via KLM 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, January is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £112). Flying from Puerto Rico to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

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

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