How long is the flight from Puerto Rico to London?

Airlines like KLM, American Airlines, and Delta fly from Puerto Rico to London in about 14h 47m. The time it takes to get you to your destination can typically vary by up to 8h 13m. The distance from Puerto Rico to London is about 4179 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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.

How far in advance should I book a flight from Puerto Rico to London?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 67% on flights from Puerto Rico to London compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £474. For sooner than that we have options available in the next 3 days from £542.

What is the cheapest month to fly from Puerto Rico to London?

The best pricing can be found in the month of February. Prices to London from Puerto Rico average £600. You can even find prices in February for less than £600, as users have found deals to London from as low as £75. The month of June appears to be one of the more expensive times to travel to London from Puerto Rico. Flying in the targeted month can save you up to 36%.

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.

£183+ Flights from Puerto Rico to London

Cheap flight deals from Puerto Rico to London

Round-trip from	£390
One-way from	£183
Popular in	June
Cheapest in	February
Average price	£718

Virgin Atlantic
21/9-7/10
2 total stops
28h 56m total
Puerto Rico to London

Search Deals

18/10
1 total stop
18h 58m total
Puerto Rico to London

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£78 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 August 2025

Search Deals

Find flight deals from Puerto Rico to London

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 25 August 2025.

Sun 21/918:00SJU - LHR

1 stop12h 25mVirgin Atlantic

Tue 7/1012:25LHR - SJU

1 stop16h 31mVirgin Atlantic

Deal found 23/8£390

Sun 9/1106:00SJU - LGW

2 stops23h 00mMultiple Airlines

Thu 20/1111:20LGW - SJU

2 stops30h 23mMultiple Airlines

Deal found 25/8£398

Sun 9/1113:57SJU - LHR

1 stop15h 03mKLM

Thu 20/1108:55LHR - SJU

1 stop18h 22mKLM

Deal found 25/8£419

Tue 9/913:18SJU - LHR

1 stop13h 47mDelta

Tue 16/915:25LHR - SJU

2 stops25h 48mDelta

Deal found 23/8£424

Wed 24/913:32SJU - LHR

1 stop14h 18mKLM

Wed 1/1010:55LHR - SJU

1 stop17h 49mKLM

Deal found 25/8£426

Wed 5/1114:06SJU - LHR

1 stop16h 09mKLM

Tue 11/1108:55LHR - SJU

1 stop18h 22mKLM

Deal found 22/8£426

Wed 24/907:00SJU - LHR

1 stop21h 15mDelta

Wed 1/1009:20LHR - SJU

1 stop17h 40mDelta

Deal found 25/8£430

Wed 29/1007:15SJU - LHR

2 stops19h 50mDelta

Thu 6/1115:50LHR - SJU

2 stops26h 22mDelta

Deal found 25/8£433

Thu 9/1007:15SJU - LHR

1 stop18h 30mVirgin Atlantic

Thu 16/1011:20LHR - SJU

1 stop15h 39mVirgin Atlantic

Deal found 25/8£440

Tue 7/1013:06SJU - LHR

1 stop14h 44mKLM

Sun 19/1010:55LHR - SJU

1 stop18h 01mKLM

Deal found 25/8£456

Thu 18/918:00SJU - LHR

1 stop35h 15mVirgin Atlantic

Wed 24/911:20LHR - SJU

1 stop15h 40mVirgin Atlantic

Deal found 25/8£459

Thu 4/913:34SJU - LGW

1 stop15h 26mKLM

Sun 7/912:00LGW - SJU

1 stop16h 51mKLM

Deal found 24/8£469

Best flights from Puerto Rico to London
Discover carefully curated flight deals from Puerto Rico to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 August 2025.

Sun 21/918:00SJU - LHR

1 stop12h 25mVirgin Atlantic

Tue 7/1012:25LHR - SJU

1 stop16h 31mVirgin Atlantic

Deal found 23/8£390

Sun 9/1112:55SJU - LGW

2 stops16h 05mMultiple Airlines

Thu 20/1111:20LGW - SJU

2 stops30h 21mMultiple Airlines

Deal found 23/8£398

Wed 15/1017:43SJU - LHR

1 stop14h 47mKLM

Wed 22/1009:20LHR - SJU

1 stop17h 39mKLM

Deal found 25/8£419

Tue 9/913:18SJU - LHR

1 stop13h 47mDelta

Tue 16/915:25LHR - SJU

2 stops25h 48mDelta

Deal found 23/8£424

Sun 9/1106:00SJU - LGW

2 stops23h 00mAmerican Airlines

Thu 20/1111:20LGW - SJU

2 stops17h 24mAmerican Airlines

Deal found 24/8£499

Tue 14/1013:00SJU - LGW

1 stop15h 35mJetBlue

Tue 21/1012:10LGW - SJU

1 stop29h 17mJetBlue

Deal found 23/8£511

Wed 18/218:10SJU - LGW

1 stop12h 40mIberia

Thu 26/211:45LGW - SJU

1 stop12h 10mIberia

Deal found 23/8£551

Tue 9/917:46SJU - LHR

1 stop14h 44mKLM

Tue 16/909:20LHR - SJU

1 stop17h 40mKLM

Deal found 23/8£419

Wed 10/913:18SJU - LHR

1 stop12h 27mDelta

Wed 17/906:30LHR - SJU

2 stops22h 14mDelta

Deal found 23/8£425

Sun 9/1113:57SJU - LHR

1 stop13h 53mKLM

Thu 20/1115:50LHR - SJU

1 stop24h 56mKLM

Deal found 23/8£419

Wed 19/1109:00SJU - LGW

1 stop17h 00mMultiple Airlines

Thu 4/1214:00LGW - SJU

1 stop23h 52mMultiple Airlines

Deal found 23/8£505

Sun 7/913:34SJU - LHR

1 stop14h 16mKLM

Tue 16/909:20LHR - SJU

1 stop17h 40mKLM

Deal found 25/8£419

Last-minute flights from Puerto Rico to London
Discover last-minute flight deals from Puerto Rico to London. Data last updated 25 August 2025 and is based on user searches.

Mon 1/913:34SJU - LHR

1 stop14h 16mKLM

Tue 9/910:55LHR - SJU

1 stop17h 56mKLM

Deal found 24/8£419

Thu 4/913:34SJU - LGW

1 stop15h 26mKLM

Sun 7/912:00LGW - SJU

1 stop16h 51mKLM

Deal found 24/8£469

Tue 9/913:18SJU - LHR

1 stop13h 47mDelta

Tue 16/915:25LHR - SJU

2 stops25h 48mDelta

Deal found 23/8£424

Tue 9/917:46SJU - LHR

1 stop14h 44mKLM

Mon 15/910:55LHR - SJU

1 stop17h 49mKLM

Deal found 25/8£456

Tue 9/913:18SJU - LHR

1 stop12h 27mDelta

Mon 15/918:50LHR - SJU

2 stops23h 26mDelta

Deal found 25/8£470

Thu 18/918:00SJU - LHR

1 stop35h 15mVirgin Atlantic

Wed 24/911:20LHR - SJU

1 stop15h 40mVirgin Atlantic

Deal found 25/8£459

Thu 18/918:00SJU - LHR

1 stop21h 00mDelta

Wed 24/908:40LHR - SJU

2 stops20h 04mDelta

Deal found 25/8£462

Sun 21/918:00SJU - LHR

1 stop12h 25mVirgin Atlantic

Tue 7/1012:25LHR - SJU

1 stop16h 31mVirgin Atlantic

Deal found 23/8£390

Sun 21/906:44SJU - LGW

1 stop22h 26mMultiple Airlines

Tue 7/1014:00LGW - SJU

1 stop16h 44mMultiple Airlines

Deal found 23/8£506

Wed 24/913:32SJU - LHR

1 stop14h 18mKLM

Wed 1/1010:55LHR - SJU

1 stop17h 49mKLM

Deal found 25/8£426

Wed 24/907:00SJU - LHR

1 stop21h 15mDelta

Wed 1/1009:20LHR - SJU

1 stop17h 40mDelta

Deal found 25/8£430

Thu 25/917:41SJU - LHR

1 stop14h 49mKLM

Fri 10/1010:55LHR - SJU

1 stop18h 01mKLM

Deal found 25/8£463

One-way flights from Puerto Rico to London
Search for one-way flight options from Puerto Rico to London. Find affordable one-way fares based on user searches. Data last updated 25 August 2025.

Sat 18/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 23/8£183

Fri 3/1021:26SJU - LGW

1 stop27h 54mMultiple Airlines

Deal found 24/8£199

Sat 18/1006:22SJU - LHR

2 stops34h 38mMultiple Airlines

Deal found 25/8£200

Wed 5/1117:51SJU - LHR

2 stops43h 39mMultiple Airlines

Deal found 24/8£200

Wed 5/1117:51SJU - LGW

2 stops41h 59mMultiple Airlines

Deal found 24/8£200

Sat 25/1006:22SJU - LGW

1 stop18h 58mMultiple Airlines

Deal found 24/8£217

Mon 24/1102:00SJU - LHR

1 stop14h 45mJetBlue

Deal found 25/8£219

Wed 5/1117:51SJU - SEN

3 stops37h 49mMultiple Airlines

Deal found 24/8£235

Sat 18/1013:00SJU - LHR

1 stop12h 30mJetBlue

Deal found 25/8£238

Fri 3/1010:57SJU - LHR

2 stops18h 23mMultiple Airlines

Deal found 22/8£239

Sat 25/1006:22SJU - LHR

2 stops50h 18mMultiple Airlines

Deal found 24/8£242

Thu 16/1021:25SJU - LHR

1 stop18h 20mJetBlue

Deal found 25/8£245

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 21/9

18:00-11:25

1 stop12h 25m

London Heathrow

Tue 7/10

12:25-23:56

1 stop16h 31m

£390

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 9/11

12:55-09:00

2 stops16h 05m

London Gatwick

Thu 20/11

11:20-13:41

2 stops30h 21m

£398

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 15/10

17:43-13:30

1 stop14h 47m

London Heathrow

Wed 22/10

09:20-21:59

1 stop17h 39m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 9/9

17:46-13:30

1 stop14h 44m

London Heathrow

Tue 16/9

09:20-22:00

1 stop17h 40m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 9/11

13:57-07:50

1 stop13h 53m

London Heathrow

Thu 20/11

15:50-12:46

1 stop24h 56m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 7/9

13:34-08:50

1 stop14h 16m

London Heathrow

Tue 16/9

09:20-22:00

1 stop17h 40m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 1/10

13:25-06:45

1 stop12h 20m

London Heathrow

Fri 10/10

09:20-21:59

1 stop17h 39m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 14/9

17:41-13:30

1 stop14h 49m

London Heathrow

Tue 30/9

10:55-23:47

1 stop17h 52m

£419

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 9/9

13:18-08:05

1 stop13h 47m

London Heathrow

Tue 16/9

15:25-12:13

2 stops25h 48m

£424

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/9

13:18-06:45

1 stop12h 27m

London Heathrow

Wed 17/9

06:30-23:44

2 stops22h 14m

£425

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 45 results

...

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, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). 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?

When flying from Puerto Rico to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

How long is the flight from Puerto Rico to London?
Airlines like KLM, American Airlines, and Delta fly from Puerto Rico to London in about 14h 47m. The time it takes to get you to your destination can typically vary by up to 8h 13m. 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, January is the cheapest month in which you can book a flight from Puerto Rico to London (average of £112). Flying from Puerto Rico to London in August is currently the most expensive (average of £164). 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.

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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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Cheap flights from Puerto Rico to London from £183

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 25 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Puerto Rico to London

Cheapest flights from Puerto Rico to LondonExplore 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 25 August 2025.

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 25 August 2025.

Cheapflights Fare Finder

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

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.

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?

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 25 August 2025.

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?

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

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

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

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

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

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Alternative routes for Puerto Rico to London

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How does Cheapflights help users find flights from Puerto Rico to London?

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

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

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

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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 25 August 2025.