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Cheap flights from Puerto Rico to London from £192

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 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
28 nov — 5 dic1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 ottobre 2025.

Round-trip from

£403

One-way from

£192

Popular in

June

Cheapest in

January

Average price

£501
KLM
  • KLM
  • 9/11-20/11
  • 2 total stops
  • 29h 46m total
  • Puerto Rico to London
Search Deals
23/11
  • 23/11
  • 2 total stops
  • 24h 14m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 29 ottobre 2025.

mar 4/1107:15SJU - LHR
1 stop24h 25mDelta
gio 27/1110:00LHR - SJU
2 stops17h 56mDelta
Deal found 28/10£403
dom 9/1113:57SJU - LHR
1 stop15h 03mKLM
gio 20/1112:30LHR - SJU
1 stop14h 43mKLM
Deal found 28/10£403
dom 9/1113:57SJU - LHR
1 stop15h 03mKLM
mar 25/1112:30LHR - SJU
1 stop14h 43mKLM
Deal found 28/10£404
mer 29/1007:15SJU - LHR
1 stop20h 35mKLM
ven 7/1108:55LHR - SJU
1 stop18h 04mKLM
Deal found 28/10£410
mer 29/1007:15SJU - LHR
1 stop19h 10mDelta
gio 6/1120:00LHR - SJU
1 stop20h 56mDelta
Deal found 29/10£414
mer 29/1007:15SJU - LHR
2 stops21h 30mDelta
ven 7/1108:55LHR - SJU
1 stop18h 04mDelta
Deal found 28/10£418
mar 4/1102:05SJU - LHR
1 stop14h 30mUnited Airlines
mar 11/1106:50LHR - SJU
2 stops18h 10mUnited Airlines
Deal found 28/10£426
lun 3/1107:45SJU - LHR
1 stop22h 30mUnited Airlines
mar 11/1108:30LHR - SJU
2 stops20h 06mUnited Airlines
Deal found 26/10£434
mer 26/1108:10SJU - LHR
2 stops18h 30mUnited Airlines
mer 3/1207:30LHR - SJU
2 stops18h 52mUnited Airlines
Deal found 27/10£437
gio 11/1218:38SJU - LHR
1 stop13h 02mVirgin Atlantic
gio 18/1212:30LHR - SJU
1 stop14h 50mVirgin Atlantic
Deal found 27/10£440
gio 6/1115:36SJU - LHR
1 stop13h 24mDelta
gio 27/1106:30LHR - SJU
2 stops21h 26mDelta
Deal found 28/10£440
mar 4/1114:20SJU - LCY
2 stops18h 35mMultiple Airlines
mar 11/1118:15LCY - SJU
2 stops32h 07mMultiple Airlines
Deal found 28/10£473

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 29 ottobre 2025.
Use the filters below to find and compare flights from Puerto Rico to London that are best for you.

Fly from

Puerto Rico

Fly to

London

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mer 26/11

14:10-08:05

1 stop13h 55m

London Heathrow

mer 3/12

12:30-23:20

1 stop14h 50m

£410

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mar 13/1

07:00-06:20

1 stop19h 20m

London Heathrow

mer 21/1

10:45-23:44

1 stop16h 59m

£413

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mer 25/2

07:00-06:55

1 stop19h 55m

London Heathrow

mar 10/3

06:20-22:18

2 stops19h 58m

£415

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mar 11/11

07:00-08:45

2 stops21h 45m

London Heathrow

gio 20/11

15:50-14:10

2 stops26h 20m

£418

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mar 25/11

02:05-21:20

1 stop15h 15m

London Heathrow

mer 3/12

06:30-13:17

2 stops34h 47m

£434

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

ven 28/11

07:15-10:15

1 stop23h 00m

London Heathrow

ven 5/12

20:00-12:58

1 stop20h 58m

£448

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mer 18/2

12:45-06:50

1 stop14h 05m

London Heathrow

gio 26/2

13:10-23:48

1 stop14h 38m

£454

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mar 24/2

02:05-21:20

1 stop15h 15m

London Heathrow

mar 10/3

12:50-23:36

1 stop14h 46m

£454

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

mar 11/11

13:57-09:20

2 stops15h 23m

London Heathrow

lun 17/11

16:10-12:46

2 stops24h 36m

£455

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

gio 27/11

17:50-16:40

2 stops18h 50m

London City

gio 4/12

17:40-22:22

2 stops32h 42m

£478

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 57 results
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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, September is the cheapest month in which you can book a flight from Puerto Rico to London (average of £76). Flying from Puerto Rico to London in July is currently the most expensive (average of £684). 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.

What is the cheapest time of day to fly from PR to LON?

Find hourly flight availability from Puerto Rico to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 ottobre 2025.

It’s optimal to fly from Puerto Rico to London in the morning. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the evening.

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 KLM and Delta fly from Puerto Rico to London in about 13h 55m. The time it takes to get you to your destination can typically vary by up to 5h 25m. 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, September is the cheapest month in which you can book a flight from Puerto Rico to London (average of £76). Flying from Puerto Rico to London in July is currently the most expensive (average of £684). 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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Alternative routes for Puerto Rico to London

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

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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