How long does it take to fly to London?

Flight times from Puerto Rico to London vary, but if you’re flying out of San Juan and flying into London Heathrow Airport (one of the most popular routes), then the duration is 12h 03m on average. Another popular route from Puerto Rico to London is flying from Ponce to London Heathrow Airport, which will take roughly 23h 44m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Puerto Rico to London?

Virgin Atlantic, Air Canada, and Iberia are the most popular carriers operating from Puerto Rico to London

When did momondo last update prices for flights from Puerto Rico to London?

Prices for flights from Puerto Rico to London were last updated today.

How many operators does momondo search for flights from Puerto Rico to London?

As of May 2026, there is 1 operator available to choose from for flights from Puerto Rico to London.

How old do you have to be to fly from Puerto Rico to London?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Puerto Rico to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£198 Cheap Flights from Puerto Rico to London in 2026

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Find the cheapest flights from Puerto Rico to London

Round-trip

One-way

Last minute

Recent return flight deals from Puerto Rico to London

Enter your travel dates to find the best prices.

15:28 - 09:25

SJU

LHR

12h 57m

1 stop

10:50 - 18:50

LHR

SJU

13h 00m

1 stop

£594Iberia

Sun, 9 Aug - Wed, 19 Aug

20:25 - 19:10

SJU

LHR

17h 45m

1 stop

11:30 - 18:50

LHR

SJU

12h 20m

1 stop

£597Iberia

Wed, 12 Aug - Wed, 26 Aug

17:15 - 10:35

SJU

LHR

12h 20m

1 stop

10:50 - 18:50

LHR

SJU

13h 00m

1 stop

£599Iberia

Wed, 12 Aug - Wed, 26 Aug

15:47 - 12:50

SJU

LHR

16h 03m

1 stop

11:30 - 18:50

LHR

SJU

12h 20m

1 stop

£599American Airlines

Wed, 12 Aug - Wed, 26 Aug

15:47 - 12:50

SJU

LHR

16h 03m

1 stop

11:30 - 18:50

LHR

SJU

12h 20m

1 stop

£600American Airlines

Wed, 12 Aug - Wed, 26 Aug

17:15 - 10:50

SJU

LGW

12h 35m

1 stop

11:30 - 18:50

LGW

SJU

12h 20m

1 stop

£604British Airways

Wed, 12 Aug - Wed, 26 Aug

01:00 - 08:20

SJU

LHR

26h 20m

1 stop

06:50 - 23:50

LHR

SJU

22h 00m

2 stops

£605United Airlines

Tue, 11 Aug - Wed, 26 Aug

01:00 - 20:40

SJU

LHR

14h 40m

1 stop

09:30 - 23:50

LHR

SJU

19h 20m

2 stops

£606United Airlines

Tue, 11 Aug - Wed, 26 Aug

17:15 - 10:50

SJU

LGW

12h 35m

1 stop

11:30 - 18:50

LGW

SJU

12h 20m

1 stop

£668British Airways

Thu, 24 Sep - Mon, 28 Sep

16:55 - 09:35

SJU

LGW

11h 40m

1 stop

12:20 - 01:55

LGW

SJU

18h 35m

1 stop

£687JetBlue

Fri, 14 Aug - Fri, 28 Aug

Iberia flights from Puerto Rico to London

Our best Iberia deals on Puerto Rico to London flight tickets

Iberia

9 Aug

SJU15:28San Juan Luis Munoz Marin Intl

12h 57m

1 stop

LHR09:25London Heathrow

19 Aug

LHR10:50London Heathrow

13h 00m

1 stop

SJU18:50San Juan Luis Munoz Marin Intl

£594

Iberia

12 Aug

SJU20:25San Juan Luis Munoz Marin Intl

17h 45m

1 stop

LHR19:10London Heathrow

26 Aug

LHR11:30London Heathrow

12h 20m

1 stop

SJU18:50San Juan Luis Munoz Marin Intl

£597

Iberia

12 Aug

SJU17:15San Juan Luis Munoz Marin Intl

12h 20m

1 stop

LHR10:35London Heathrow

26 Aug

LHR10:50London Heathrow

13h 00m

1 stop

SJU18:50San Juan Luis Munoz Marin Intl

£599

KLM flights from Puerto Rico to London

Our best KLM deals on Puerto Rico to London flight tickets

KLM

11 Oct

SJU13:06San Juan Luis Munoz Marin Intl

16h 14m

1 stop

LHR10:20London Heathrow

17 Oct

LHR11:45London Heathrow

17h 11m

1 stop

SJU23:56San Juan Luis Munoz Marin Intl

£659

KLM

5 Nov

SJU13:46San Juan Luis Munoz Marin Intl

14h 04m

1 stop

LHR07:50London Heathrow

10 Nov

LHR11:55London Heathrow

16h 00m

1 stop

SJU23:55San Juan Luis Munoz Marin Intl

£660

KLM

1 Jun

SJU14:00San Juan Luis Munoz Marin Intl

21h 40m

2 stops

LCY16:40London City

18 Jun

LCY10:00London City

17h 27m

2 stops

SJU22:27San Juan Luis Munoz Marin Intl

£783

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 9/8

15:28-09:25

1 stop12h 57m

London Heathrow

Wed 19/8

10:50-18:50

1 stop13h 00m

£594

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

20:25-19:10

1 stop17h 45m

London Heathrow

Wed 26/8

11:30-18:50

1 stop12h 20m

£597

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

17:15-10:35

1 stop12h 20m

London Heathrow

Wed 26/8

10:50-18:50

1 stop13h 00m

£599

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

15:47-12:50

1 stop16h 03m

London Heathrow

Wed 26/8

11:30-18:50

1 stop12h 20m

£599

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

15:47-12:50

1 stop16h 03m

London Heathrow

Wed 26/8

11:30-18:50

1 stop12h 20m

£600

Fastest return journey

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Wed 12/8

17:15-10:50

1 stop12h 35m

London Gatwick

Wed 26/8

11:30-18:50

1 stop12h 20m

£604

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 11/8

01:00-08:20

1 stop26h 20m

London Heathrow

Wed 26/8

06:50-23:50

2 stops22h 00m

£605

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 11/8

01:00-20:40

1 stop14h 40m

London Heathrow

Wed 26/8

09:30-23:50

2 stops19h 20m

£606

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 24/9

17:15-10:50

1 stop12h 35m

London Gatwick

Mon 28/9

11:30-18:50

1 stop12h 20m

£668

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Fri 14/8

16:55-09:35

1 stop11h 40m

London Gatwick

Fri 28/8

12:20-01:55

1 stop18h 35m

£687

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Puerto Rico to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Puerto Rico is in October. Flight prices, which tend to average around £74, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Puerto Rico averaging around £74.

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

You are more likely to see cheaper flights to London from Puerto Rico when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £609 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Puerto Rico for as low as £487 on momondo.

Can stopping save me money on Puerto Rico to London flights?

You could potentially save up to 44% on your flight if you consider stops on a Puerto Rico to London flight.

Cheap Puerto Rico to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Puerto Rico to London

Fastest flight time	12h 20m
Direct flights	None

The fastest flight from Puerto Rico to London takes 12h 20m

There are no direct flights from Puerto Rico to London. There are no popular flight routes from Puerto Rico to London.

Search flight deals

Frequently asked questions about flying from Puerto Rico to London

When did momondo last update prices for flights from Puerto Rico to London?
Prices for flights from Puerto Rico to London were last updated today.
How many operators does momondo search for flights from Puerto Rico to London?
As of May 2026, there is 1 operator available to choose from for flights from Puerto Rico to London.
How old do you have to be to fly from Puerto Rico to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Puerto Rico to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Puerto Rico to London

Compare and see reviews for airlines that fly from Puerto Rico to London with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom £563	Free Cancellation	Rating 7.1 2,977 reviews		Search JetBlue flights

Eastbourne

Milton Keynes

Luton

Gatwick

Wembley

Slough

Maidstone

Ipswich

Southend-on-Sea

Canterbury

Ilford

Hayes

Guildford

Folkestone

Chelmsford

Dover

Chichester

Bedford

Harlow

Ramsgate

Why use momondo?

Why should I use momondo to find a flight deal from Puerto Rico to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Puerto Rico.

Can I find flights from Puerto Rico to London with flexible booking policies on momondo?

All flight searches from Puerto Rico to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Puerto Rico to London?

Once all potential Puerto Rico to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Puerto Rico to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Puerto Rico. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Puerto Rico to London from £198

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Puerto Rico to London departing on 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Puerto Rico to London

What is the cheapest month to fly to London?

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

Can stopping save me money on Puerto Rico to London flights?

What is the cheapest airline that flies from Puerto Rico to London?

How long does it take to fly to London?

Cheap Puerto Rico to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Puerto Rico to London

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Frequently asked questions about flying from Puerto Rico to London

Best airlines flying from Puerto Rico to London

Compare and see reviews for airlines that fly from Puerto Rico to London with momondo

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Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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