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Cheap flights from Puerto Rico to London Heathrow Airport from £203

SJU — LHR
18 Sep — 25 Sep1
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

Mon 2/1121:35 -
1 stop11h 55m
Tue 17/1110:45 -
1 stop13h 15m
Deal found 15/8£555
Sat 7/1118:10 -
1 stop32h 10m
Mon 16/1114:45 -
2 stops36h 28m
Deal found 16/8£564
Wed 30/1218:40 -
1 stop13h 00m
Fri 8/111:35 -
1 stop16h 20m
Deal found 18/8£576
Mon 16/1118:55 -
1 stop13h 10m
Fri 20/1111:15 -
1 stop15h 14m
Deal found 15/8£577
Thu 26/1118:35 -
1 stop13h 05m
Thu 3/1220:10 -
1 stop25h 10m
Deal found 14/8£581
Wed 11/1118:55 -
1 stop13h 10m
Sat 21/1107:30 -
1 stop13h 10m
Deal found 16/8£583
Thu 26/1115:17 -
1 stop12h 58m
Thu 3/1211:15 -
1 stop14h 23m
Deal found 17/8£588
Mon 16/1117:50 -
1 stop13h 00m
Fri 20/1106:50 -
2 stops21h 46m
Deal found 18/8£601
Mon 21/906:00 -
1 stop22h 30m
Wed 30/908:15 -
1 stop16h 19m
Deal found 17/8£604

Find flight deals from Puerto Rico to Heathrow

Round-trip from

£555

One-way from

£203

Popular in

June

Cheapest in

February

Average price

£674
Iberia
  • Iberia
  • 2/11-17/11
  • 2 total stops
  • 25h 10m total
  • Puerto Rico to London
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Iberia
  • Iberia
  • 16/11
  • 1 total stop
  • 13h 10m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£115 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Puerto Rico to London Heathrow Airport that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/11

11:45-09:30

1 stop17h 45m

London Heathrow

Fri 27/11

09:20-19:35

1 stop14h 15m

£623

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/11

07:00-06:55

1 stop19h 55m

London Heathrow

Tue 10/11

09:20-00:25

1 stop19h 05m

£623

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 30/12

07:40-10:15

1 stop22h 35m

London Heathrow

Fri 8/1

06:50-00:36

2 stops21h 46m

£635

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/11

14:30-10:45

2 stops16h 15m

London Heathrow

Tue 24/11

08:40-23:13

2 stops18h 33m

£636
Fastest return journey

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 16/9

13:16-08:50

1 stop14h 34m

London Heathrow

Mon 28/9

11:45-23:49

2 stops17h 04m

£683

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 11/11

07:40-06:20

2 stops18h 40m

London Heathrow

Sat 21/11

08:00-22:22

2 stops18h 22m

£691

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 23/9

13:00-09:30

1 stop15h 30m

London Heathrow

Sun 27/9

08:15-19:34

1 stop16h 19m

£703

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/10

16:55-10:40

1 stop12h 45m

London Heathrow

Sat 31/10

07:30-23:36

2 stops20h 06m

£711

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Wed 16/9

01:00-06:30

2 stops24h 30m

London Heathrow

Sun 20/9

06:50-23:50

2 stops22h 00m

£726

San JuanLondon

SJU San Juan Luis Munoz Marin Intl - LHR London Heathrow

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/11

08:15-07:45

2 stops19h 30m

London Heathrow

Mon 9/11

20:10-17:25

2 stops25h 15m

£728

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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

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, April is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £533). Flying from Puerto Rico to London Heathrow Airport in December is currently the most expensive (average of £870). 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.

How far ahead should I book a flight from Puerto Rico to London Heathrow Airport?

The price you pay for your flight from Puerto Rico to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 36 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

  • 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 16h 15m. Fly via JetBlue, United Airlines, or KLM 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, Ponce Mercedita - London Heathrow and Culebra - 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, April is the cheapest month in which you can book a flight from Puerto Rico to London Heathrow Airport (average of £533). Flying from Puerto Rico to London Heathrow Airport in December is currently the most expensive (average of £870). 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
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Southend-on-Sea
Barnet
Enfield
Swindon
Kingston upon Thames
Southall
Salisbury

Browse thousands of different options on Cheapflights for your next trip

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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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