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Cheap flights from Puerto Rico to London from £213

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
9 Aug — 16 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 10 July 2026.

Sun 23/808:48
PSE
-
LHR
2 stops30h 32m
Multiple Airlines
Sun 30/808:50
LHR
-
PSE
2 stops28h 08m
Multiple Airlines
Deal found 9/7£509
Tue 10/1115:46
SJU
-
LHR
1 stop35h 54m
United Airlines
Fri 13/1106:50
LHR
-
SJU
2 stops21h 46m
United Airlines
Deal found 9/7£516
Fri 21/808:48
PSE
-
LHR
2 stops25h 12m
Multiple Airlines
Fri 28/809:50
LHR
-
PSE
2 stops27h 08m
Multiple Airlines
Deal found 7/7£561
Thu 26/1118:35
SJU
-
LHR
1 stop13h 05m
Virgin Atlantic
Thu 3/1219:20
LHR
-
SJU
2 stops32h 00m
Virgin Atlantic
Deal found 7/7£576
Fri 21/809:16
SJU
-
LGW
1 stop19h 44m
Multiple Airlines
Thu 3/914:00
LGW
-
SJU
1 stop17h 15m
Multiple Airlines
Deal found 10/7£576
Tue 8/913:21
SJU
-
LHR
1 stop14h 29m
Virgin Atlantic
Tue 15/909:20
LHR
-
SJU
1 stop17h 59m
Virgin Atlantic
Deal found 5/7£592
Wed 4/1118:42
SJU
-
LHR
1 stop13h 23m
Iberia
Tue 17/1106:05
LHR
-
SJU
1 stop14h 35m
Iberia
Deal found 6/7£601
Sun 23/810:47
PSE
-
LGW
1 stop18h 13m
Multiple Airlines
Sun 30/814:00
LGW
-
PSE
1 stop25h 02m
Multiple Airlines
Deal found 9/7£601
Wed 11/1121:35
SJU
-
LGW
1 stop17h 25m
Iberia
Tue 24/1111:45
LGW
-
SJU
1 stop12h 15m
Iberia
Deal found 6/7£603
Wed 11/1121:35
SJU
-
LHR
1 stop13h 20m
Iberia
Tue 24/1110:45
LHR
-
SJU
1 stop13h 15m
Iberia
Deal found 6/7£603
Mon 5/1014:18
SJU
-
LHR
1 stop13h 42m
Iberia
Thu 15/1011:30
LHR
-
SJU
2 stops27h 16m
Iberia
Deal found 6/7£609
Sun 4/1001:00
SJU
-
LHR
2 stops24h 30m
United Airlines
Thu 15/1006:50
LHR
-
SJU
2 stops22h 00m
United Airlines
Deal found 6/7£612

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 10 July 2026.

Round-trip from

£509

One-way from

£213

Popular in

June

Cheapest in

February

Average price

£685
23/8-30/8
  • 23/8-30/8
  • 4 total stops
  • 58h 40m total
  • Puerto Rico to London
Search Deals
15/7
  • 15/7
  • 2 total stops
  • 22h 56m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£117 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 July 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 10 July 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

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Sun 23/8

08:48-20:20

2 stops30h 32m

London Heathrow

Sun 30/8

08:50-07:58

2 stops28h 08m

£509

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 10/11

15:46-07:40

1 stop35h 54m

London Heathrow

Fri 13/11

06:50-13:15

2 stops34h 25m

£516

PonceLondon

PSE - LHR

PSELHR

Ponce Mercedita

Fri 21/8

08:48-15:00

2 stops25h 12m

London Heathrow

Fri 28/8

09:50-07:58

2 stops27h 08m

£561

PonceLondon

PSE - LGW

PSELGW

Ponce Mercedita

Sun 23/8

10:47-10:00

1 stop18h 13m

London Gatwick

Sun 30/8

14:00-10:02

1 stop25h 02m

£601

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 4/10

01:00-06:30

2 stops24h 30m

London Heathrow

Thu 15/10

06:50-23:50

2 stops22h 00m

£612

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 5/10

07:00-11:35

1 stop23h 35m

London Heathrow

Mon 19/10

17:50-23:50

2 stops35h 00m

£621

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Wed 11/11

14:30-16:35

2 stops22h 05m

London City

Tue 24/11

09:20-23:13

2 stops17h 53m

£633

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/11

17:50-10:50

1 stop13h 00m

London Heathrow

Tue 10/11

06:50-00:36

2 stops21h 46m

£646

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 9/11

08:05-06:20

2 stops18h 15m

London Heathrow

Sun 15/11

06:50-22:22

2 stops19h 32m

£650

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

13:19-10:20

1 stop16h 01m

London Heathrow

Wed 26/8

09:55-22:29

2 stops17h 34m

£652

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 59 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 £75). Flying from Puerto Rico to London in June is currently the most expensive (average of £609). 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 United Airlines, KLM, and British Airways fly from Puerto Rico to London in about 12h 35m. The time it takes to get you to your destination can typically vary by up to 23h 19m. The distance from Puerto Rico to London is about 4188 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 £75). Flying from Puerto Rico to London in June is currently the most expensive (average of £609). 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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Uxbridge

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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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