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Cheap flights from Puerto Rico to London Heathrow Airport from £243

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
15 Apr — 22 Apr1
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 16 March 2026.

Mon 14/913:32
SJU
-
LHR
1 stop17h 33m
Virgin Atlantic
Mon 21/919:45
LHR
-
SJU
2 stops31h 15m
Virgin Atlantic
Deal found 15/3£472
Tue 15/913:32
SJU
-
LHR
1 stop15h 48m
Virgin Atlantic
Wed 30/911:20
LHR
-
SJU
1 stop17h 24m
Virgin Atlantic
Deal found 15/3£487
Mon 21/917:41
SJU
-
LHR
1 stop14h 34m
Virgin Atlantic
Fri 2/1012:50
LHR
-
SJU
1 stop15h 54m
Virgin Atlantic
Deal found 14/3£490
Wed 30/1215:30
SJU
-
LHR
1 stop13h 30m
Virgin Atlantic
Fri 8/116:40
LHR
-
SJU
1 stop24h 25m
Virgin Atlantic
Deal found 12/3£491
Mon 2/1107:30
SJU
-
LHR
1 stop18h 55m
Virgin Atlantic
Sat 7/1106:20
LHR
-
SJU
2 stops20h 39m
Virgin Atlantic
Deal found 15/3£506
Sun 11/1014:00
SJU
-
LHR
1 stop14h 00m
Iberia
Sat 17/1019:10
LHR
-
SJU
1 stop25h 15m
Iberia
Deal found 15/3£509
Thu 5/1114:06
SJU
-
LHR
1 stop15h 29m
Virgin Atlantic
Tue 10/1114:45
LHR
-
SJU
2 stops36h 28m
Virgin Atlantic
Deal found 14/3£517

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 16 March 2026.

Round-trip from

£526

One-way from

£243

Popular in

June

Cheapest in

February

Average price

£531
Virgin Atlantic
  • Virgin Atlantic
  • 22/4-29/4
  • 2 total stops
  • 35h 44m total
  • Puerto Rico to London
Search Deals
JetBlue
  • JetBlue
  • 27/4
  • 1 total stop
  • 18h 45m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 16 March 2026.
Use the filters below to find and compare flights from Puerto Rico to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

06:15-07:10

2 stops19h 55m

London Heathrow

Wed 29/4

08:20-23:13

2 stops19h 53m

£616

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 11/9

17:41-14:35

2 stops15h 54m

London Heathrow

Sun 20/9

18:35-13:16

2 stops23h 41m

£646

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 23/4

15:00-09:30

1 stop13h 30m

London Heathrow

Wed 29/4

08:15-18:30

1 stop15h 15m

£661

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 26/4

07:40-11:55

1 stop23h 15m

London Heathrow

Sun 3/5

06:50-21:24

2 stops19h 34m

£675

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 13/4

01:00-20:40

1 stop14h 40m

London Heathrow

Fri 24/4

07:30-21:24

2 stops18h 54m

£684

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 1/4

06:15-07:10

2 stops19h 55m

London Heathrow

Mon 6/4

20:05-16:18

2 stops25h 13m

£705

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 14/6

17:48-14:35

2 stops15h 47m

London Heathrow

Thu 18/6

18:55-12:23

1 stop22h 28m

£757

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/6

14:00-10:40

1 stop15h 40m

London Heathrow

Thu 11/6

09:20-22:48

1 stop18h 28m

£792
Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/6

13:13-06:45

1 stop12h 32m

London Heathrow

Thu 11/6

09:20-19:53

1 stop15h 33m

£792

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/6

03:05-20:45

1 stop12h 40m

London Heathrow

Thu 11/6

11:55-00:10

1 stop17h 15m

£820

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 17 resultsSorted by cheapest first
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 £697). 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 13h 30m. Fly via Delta, JetBlue, 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 £697). 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
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Eastbourne
Romford
Ipswich
Swindon
Bedford

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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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