Find flights
When to book
FAQs

Cheap flights from Puerto Rico to London Heathrow Airport from £235

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 21/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
27 2月 — 6 3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 28 1月 2026.

週二 24/216:40
SJU
-
LHR
1 stop15h 25m
Iberia
週二 3/310:45
LHR
-
SJU
1 stop13h 10m
Iberia
Deal found 27/1£414
週二 24/216:40
SJU
-
LHR
1 stop15h 25m
American Airlines
週二 3/311:25
LHR
-
SJU
1 stop12h 30m
American Airlines
Deal found 25/1£419
週三 11/316:50
SJU
-
LHR
1 stop14h 00m
United Airlines
週三 18/306:50
LHR
-
SJU
2 stops18h 32m
United Airlines
Deal found 25/1£419
週二 24/216:52
SJU
-
LHR
1 stop14h 23m
United Airlines
週二 3/306:50
LHR
-
SJU
2 stops18h 10m
United Airlines
Deal found 27/1£421
週二 24/207:30
SJU
-
LHR
1 stop18h 55m
Delta
週二 3/306:30
LHR
-
SJU
2 stops21h 28m
Delta
Deal found 25/1£424
週三 11/317:22
SJU
-
LHR
1 stop12h 08m
JetBlue
週三 18/312:20
LHR
-
SJU
1 stop14h 31m
JetBlue
Deal found 25/1£430
週二 17/313:10
SJU
-
LHR
2 stops17h 40m
United Airlines
週二 24/307:30
LHR
-
SJU
2 stops17h 52m
United Airlines
Deal found 25/1£431
週三 22/413:25
SJU
-
LHR
2 stops16h 15m
United Airlines
週三 29/407:30
LHR
-
SJU
2 stops18h 54m
United Airlines
Deal found 26/1£432
週一 9/307:05
SJU
-
LHR
1 stop19h 35m
United Airlines
週五 20/307:25
LHR
-
SJU
1 stop16h 35m
United Airlines
Deal found 26/1£433

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 28 1月 2026.

Round-trip from

£414

One-way from

£235

Popular in

June

Cheapest in

February

Average price

£456
Iberia
  • Iberia
  • 24/2-3/3
  • 2 total stops
  • 28h 35m total
  • Puerto Rico to London
Search Deals
JetBlue
  • JetBlue
  • 21/3
  • 1 total stop
  • 21h 45m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 28 1月 2026.
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 11/3

16:50-10:50

1 stop14h 00m

London Heathrow

週三 18/3

06:50-21:22

2 stops18h 32m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週二 24/2

07:30-06:25

1 stop18h 55m

London Heathrow

週二 3/3

06:30-23:58

2 stops21h 28m

£424

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週三 22/4

13:25-09:20

1 stop14h 55m

London Heathrow

週三 29/4

07:30-21:24

2 stops18h 54m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 19/3

17:10-10:15

1 stop13h 05m

London Heathrow

週四 26/3

08:55-23:15

1 stop18h 20m

£435

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週三 15/4

15:56-11:45

1 stop14h 49m

London Heathrow

週四 30/4

07:30-21:24

2 stops18h 54m

£439

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週三 18/2

05:15-21:40

1 stop12h 25m

London Heathrow

週四 26/2

12:20-03:51

1 stop19h 31m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週六 14/3

16:50-06:40

1 stop33h 50m

London Heathrow

週日 22/3

12:05-12:17

1 stop28h 12m

£440

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週四 19/3

13:14-06:50

1 stop13h 36m

London Heathrow

週四 26/3

08:55-23:15

1 stop18h 20m

£442

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週三 22/4

13:25-08:50

1 stop14h 25m

London Heathrow

週三 29/4

11:45-23:59

1 stop17h 14m

£448

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

週二 31/3

07:40-09:00

1 stop20h 20m

London Heathrow

週五 17/4

08:00-20:34

1 stop17h 34m

£452

Flights are sorted by cheapest return flights first.

Deals found on 26/1

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 £74). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £711). 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. Fly via United Airlines or Delta 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 £74). Flying from Puerto Rico to London Heathrow Airport in June is currently the most expensive (average of £711). 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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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