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Cheap flights from Puerto Rico to London from £181

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
26 Jul — 2 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Puerto Rico to London

Enter your travel dates to find the best prices.

Cheapest flights from Puerto Rico to London
Explore the most affordable flight options available from Puerto Rico to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2026.

Mon 16/1107:00
SJU
-
LHR
1 stop22h 00m
Virgin Atlantic
Fri 20/1112:30
LHR
-
SJU
1 stop14h 43m
Virgin Atlantic
Deal found 24/6£322
Sat 21/1115:35
SJU
-
LHR
1 stop16h 05m
Virgin Atlantic
Mon 30/1108:55
LHR
-
SJU
1 stop18h 18m
Virgin Atlantic
Deal found 25/6£377
Mon 3/814:59
SJU
-
LHR
1 stop17h 16m
Virgin Atlantic
Mon 10/818:35
LHR
-
SJU
1 stop22h 33m
Virgin Atlantic
Deal found 23/6£387
Fri 24/717:50
SJU
-
LHR
1 stop14h 25m
Virgin Atlantic
Fri 31/718:35
LHR
-
SJU
1 stop22h 25m
Virgin Atlantic
Deal found 23/6£388
Thu 30/713:10
SJU
-
LHR
1 stop12h 35m
Virgin Atlantic
Fri 31/719:50
LHR
-
SJU
1 stop21h 10m
Virgin Atlantic
Deal found 23/6£479
Fri 17/707:35
SJU
-
LHR
1 stop18h 10m
Virgin Atlantic
Tue 21/718:35
LHR
-
SJU
1 stop27h 03m
Virgin Atlantic
Deal found 24/6£502
Fri 24/706:00
SJU
-
LHR
1 stop20h 15m
Virgin Atlantic
Sat 25/720:05
LHR
-
SJU
1 stop20h 55m
Virgin Atlantic
Deal found 23/6£506
Tue 10/1115:46
SJU
-
LHR
1 stop35h 54m
United Airlines
Fri 13/1106:50
LHR
-
SJU
2 stops33h 00m
United Airlines
Deal found 25/6£525
Thu 6/808:46
PSE
-
LHR
2 stops26h 14m
Multiple Airlines
Thu 13/808:50
LHR
-
PSE
2 stops28h 06m
Multiple Airlines
Deal found 22/6£526
Mon 16/1118:42
SJU
-
LHR
1 stop13h 23m
Iberia
Thu 26/1106:15
LHR
-
SJU
1 stop14h 25m
Iberia
Deal found 25/6£538
Sun 5/707:05
SJU
-
LHR
1 stop18h 40m
Virgin Atlantic
Mon 13/711:45
LHR
-
SJU
1 stop17h 08m
Virgin Atlantic
Deal found 24/6£540
Mon 16/1114:05
SJU
-
LHR
1 stop12h 15m
Virgin Atlantic
Thu 26/1119:20
LHR
-
SJU
2 stops31h 53m
Virgin Atlantic
Deal found 25/6£551

Find flight deals from Puerto Rico to London

Keep the following information in mind while searching for Puerto Rico to London flight deals. Data was last updated 26 June 2026.

Round-trip from

£322

One-way from

£181

Popular in

June

Cheapest in

February

Average price

£885
Virgin Atlantic
  • Virgin Atlantic
  • 16/11-20/11
  • 2 total stops
  • 36h 43m total
  • Puerto Rico to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 4/8
  • 1 total stop
  • 18h 25m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£118 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Puerto Rico to London 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 26 June 2026.
Use the filters below to find and compare flights from Puerto Rico to London 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

Sat 21/11

15:35-11:40

1 stop16h 05m

London Heathrow

Mon 30/11

08:55-23:13

1 stop18h 18m

£377

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Thu 6/8

08:46-16:00

2 stops26h 14m

London Heathrow

Thu 13/8

08:50-07:56

2 stops28h 06m

£526

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 21/10

13:25-07:15

1 stop12h 50m

London Heathrow

Thu 29/10

06:50-21:22

2 stops18h 32m

£622

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 16/11

15:35-13:45

2 stops18h 10m

London Heathrow

Fri 20/11

09:40-23:55

2 stops18h 15m

£640

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 9/10

14:00-09:00

1 stop14h 00m

London Heathrow

Tue 20/10

20:00-15:25

1 stop24h 25m

£659

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 4/10

07:00-05:55

2 stops17h 55m

London Heathrow

Mon 19/10

06:50-23:50

2 stops22h 00m

£659

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 6/10

01:00-08:35

2 stops26h 35m

London Heathrow

Sun 18/10

07:30-23:50

2 stops21h 20m

£664

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 10/10

01:00-06:55

2 stops24h 55m

London Heathrow

Sun 18/10

07:30-23:50

2 stops21h 20m

£667

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 5/9

01:00-06:55

2 stops24h 55m

London Heathrow

Sun 20/9

06:50-23:50

2 stops22h 00m

£670

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 24/9

17:59-13:15

1 stop14h 16m

London Heathrow

Mon 28/9

11:45-23:44

2 stops16h 59m

£676

Flights are sorted by cheapest return flights first.

Deals found on 25/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Puerto Rico to London

Have a flexible travel schedule? Discover the best time to fly to London 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

What is the cheapest month to book a flight from Puerto Rico to London?

Currently, February is the cheapest month in which you can book a flight from Puerto Rico to London (average of £77). Flying from Puerto Rico to London in June is currently the most expensive (average of £620). 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?

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from Puerto Rico to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to London. 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?

    Airlines like Virgin Atlantic, United Airlines, and KLM fly from Puerto Rico to London in about 12h 50m. The time it takes to get you to your destination can typically vary by up to 9h 40m. The distance from Puerto Rico to London is about 4179 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Puerto Rico to London?

    When deciding which route to take from Puerto Rico to London consider San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City as they are the most popular.

  • Can I find deals for flights from Puerto Rico to London that include hotel bookings?

    Yes. In addition to deals on Puerto Rico to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Puerto Rico to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to London.

  • Can I find deals for business class flights from Puerto Rico to London?

    Yes. Cheapflights offers flight deals from Puerto Rico to London 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?

    Currently, February is the cheapest month in which you can book a flight from Puerto Rico to London (average of £77). Flying from Puerto Rico to London in June is currently the most expensive (average of £620). 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

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Deals for Puerto Rico to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Puerto Rico to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Puerto Rico.

Can Cheapflights find flights from Puerto Rico to London with no change fees?

Certainly. Search results for flights to London from Puerto Rico shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Puerto Rico to London become cheaper?

Not ready to book yet? You can track prices for flights from Puerto Rico to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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