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Cheap flights from Puerto Rico to London from £229

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 14/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
11 Jan — 18 Jan1
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 12 December 2025.

Wed 31/1210:15SJU - LHR
1 stop17h 15mLufthansa
Thu 8/112:45LHR - SJU
1 stop15h 51mLufthansa
Deal found 10/12£542
Wed 31/1208:10SJU - LHR
1 stop21h 20mJetBlue
Thu 8/107:25LHR - SJU
1 stop20h 25mJetBlue
Deal found 10/12£571
Wed 31/1214:08SJU - LHR
1 stop12h 42mKLM
Thu 8/108:55LHR - SJU
1 stop16h 03mKLM
Deal found 9/12£574
Tue 30/1208:10SJU - LHR
1 stop19h 45mUnited Airlines
Thu 8/112:05LHR - SJU
1 stop14h 17mUnited Airlines
Deal found 10/12£581
Wed 31/1208:30SJU - LHR
1 stop18h 10mUnited Airlines
Thu 8/108:00LHR - SJU
2 stops18h 22mUnited Airlines
Deal found 10/12£584
Mon 29/1201:59SJU - LHR
1 stop15h 41mJetBlue
Wed 7/112:20LHR - SJU
1 stop18h 05mJetBlue
Deal found 10/12£607
Wed 31/1210:15SJU - LHR
1 stop17h 15mLufthansa
Wed 7/112:50LHR - SJU
1 stop15h 46mLufthansa
Deal found 10/12£610
Fri 26/1207:45SJU - LHR
1 stop19h 45mUnited Airlines
Fri 9/108:00LHR - SJU
2 stops26h 11mUnited Airlines
Deal found 10/12£636
Wed 31/1214:45SJU - LHR
1 stop13h 20mKLM
Wed 7/120:00LHR - SJU
1 stop31h 57mKLM
Deal found 9/12£642
Wed 31/1208:10SJU - LHR
2 stops18h 10mUnited Airlines
Wed 7/112:50LHR - SJU
1 stop15h 46mUnited Airlines
Deal found 10/12£652
Tue 30/1213:21SJU - LGW
2 stops23h 04mMultiple Airlines
Thu 8/114:00LGW - SJU
1 stop16h 50mMultiple Airlines
Deal found 10/12£877
Mon 29/1203:55SJU - LGW
2 stops22h 05mMultiple Airlines
Wed 7/113:00LGW - SJU
1 stop35h 54mMultiple Airlines
Deal found 10/12£907

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 12 December 2025.

Round-trip from

£422

One-way from

£229

Popular in

June

Cheapest in

February

Average price

£630
Virgin Atlantic
  • Virgin Atlantic
  • 24/1-31/1
  • 2 total stops
  • 28h 23m total
  • Puerto Rico to London
Search Deals
JetBlue
  • JetBlue
  • 14/4
  • 1 total stop
  • 23h 05m total
  • Puerto Rico to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£100 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 December 2025
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 12 December 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

Sat 24/1

18:34-11:40

1 stop13h 06m

London Heathrow

Sat 31/1

12:40-23:57

1 stop15h 17m

£422

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 14/2

10:15-10:15

1 stop20h 00m

London Heathrow

Sat 21/2

06:30-22:22

2 stops19h 52m

£430

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/2

02:05-21:20

1 stop15h 15m

London Heathrow

Sat 21/2

06:30-22:22

2 stops19h 52m

£430

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 30/1

14:20-09:30

1 stop15h 10m

London Heathrow

Mon 2/2

12:20-23:50

1 stop15h 30m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

23:50-21:40

1 stop17h 50m

London Heathrow

Thu 26/2

12:20-22:25

1 stop14h 05m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 24/1

16:52-11:15

1 stop14h 23m

London Heathrow

Sat 31/1

08:30-22:22

2 stops17h 52m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 30/1

14:15-09:10

1 stop14h 55m

London Heathrow

Mon 2/2

08:30-22:22

2 stops17h 52m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

14:10-08:25

1 stop14h 15m

London Heathrow

Fri 27/2

09:30-00:36

2 stops19h 06m

£437

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 21/1

02:05-20:35

1 stop14h 30m

London Heathrow

Thu 29/1

08:30-22:22

2 stops17h 52m

£437

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 10/2

21:25-14:30

1 stop13h 05m

London Gatwick

Tue 17/2

07:20-19:55

1 stop16h 35m

£482

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 48 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 £75). Flying from Puerto Rico to London in June is currently the most expensive (average of £733). 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 12 December 2025.

It’s optimal to fly from Puerto Rico to London in the morning. By choosing this option you can save up to 44% 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 Virgin Atlantic, United Airlines, and JetBlue fly from Puerto Rico to London in about 13h 06m. The time it takes to get you to your destination can typically vary by up to 6h 54m. 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 £75). Flying from Puerto Rico to London in June is currently the most expensive (average of £733). 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.
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Luis Munoz Marin Intl to Heathrow flights
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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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