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Cheap flights from London to Puerto Rico from £301

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Puerto Rico departing on 9/12. 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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Find the cheapest flights from London to Puerto Rico

Cheap return flights

Logo
14:00 - 20:56LGW-SJU
35h 56m1 stop
Logo
06:44 - 10:00SJU-LGW
22h 16m1 stop
£454
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Fri, 19 Sep - Fri, 26 Sep
Icelandair Logo
12:10 - 12:17LGW-SJU
29h 07m1 stop
Icelandair Logo
06:00 - 09:35SJU-LGW
22h 35m2 stops
£477Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
JetBlue Logo
07:25 - 03:48LHR-SJU
24h 23m1 stop
JetBlue Logo
02:00 - 20:45SJU-LHR
14h 45m1 stop
£496JetBlue
Find Deal
Wed, 12 Nov - Fri, 21 Nov
JetBlue Logo
08:15 - 16:55LHR-SJU
13h 40m1 stop
JetBlue Logo
18:05 - 20:45SJU-LHR
21h 40m1 stop
£499JetBlue
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Tue, 16 Sep - Sat, 20 Sep
TAP AIR PORTUGAL Logo
16:00 - 03:17LGW-SJU
39h 17m2 stops
TAP AIR PORTUGAL Logo
09:20 - 20:40SJU-LGW
31h 20m2 stops
£589TAP AIR PORTUGAL
Find Deal
Thu, 6 Nov - Sat, 15 Nov
TAP AIR PORTUGAL Logo
21:35 - 23:57LGW-SJU
54h 22m2 stops
TAP AIR PORTUGAL Logo
06:15 - 15:45SJU-LGW
29h 30m2 stops
£594TAP AIR PORTUGAL
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Mon, 19 Jan - Sun, 1 Feb
Iberia Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£960Iberia
Find Deal
Mon, 19 Jan - Sun, 1 Feb
Iberia Logo
07:50 - 16:40LCY-SJU
12h 50m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£965Iberia
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Thu, 5 Feb - Sun, 15 Feb
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£3,318British Airways
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Mon, 9 Feb - Thu, 19 Feb
British Airways Logo
07:50 - 19:55LCY-SJU
16h 05m1 stop
British Airways Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£10,376British Airways
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Wed, 7 Jan - Sun, 18 Jan

Icelandair flights from London to Puerto Rico

Our best Icelandair deals on London to Puerto Rico flight tickets
Icelandair
9 Sept
LGW12:10London Gatwick
29h 07m
1 stop
SJU12:17San Juan Luis Munoz Marin Intl
24 Sept
SJU06:00San Juan Luis Munoz Marin Intl
22h 35m
2 stops
LGW09:35London Gatwick
£477
Find similar
Icelandair
9 Sept
LHR08:15London Heathrow
19h 17m
1 stop
SJU22:32San Juan Luis Munoz Marin Intl
24 Sept
SJU06:00San Juan Luis Munoz Marin Intl
22h 30m
1 stop
LHR09:30London Heathrow
£487
Find similar
Icelandair
3 Sept
LHR08:15London Heathrow
13h 37m
1 stop
SJU16:52San Juan Luis Munoz Marin Intl
18 Sept
SJU13:00San Juan Luis Munoz Marin Intl
12h 30m
1 stop
LHR06:30London Heathrow
£489
Find similar

JetBlue flights from London to Puerto Rico

Our best JetBlue deals on London to Puerto Rico flight tickets
JetBlue
12 Nov
LHR07:25London Heathrow
24h 23m
1 stop
SJU03:48San Juan Luis Munoz Marin Intl
21 Nov
SJU02:00San Juan Luis Munoz Marin Intl
14h 45m
1 stop
LHR20:45London Heathrow
£496
Find similar
JetBlue
16 Sept
LHR08:15London Heathrow
13h 40m
1 stop
SJU16:55San Juan Luis Munoz Marin Intl
20 Sept
SJU18:05San Juan Luis Munoz Marin Intl
21h 40m
1 stop
LHR20:45London Heathrow
£499
Find similar
JetBlue
4 Nov
LHR07:25London Heathrow
18h 29m
1 stop
SJU21:54San Juan Luis Munoz Marin Intl
12 Nov
SJU09:30San Juan Luis Munoz Marin Intl
20h 00m
1 stop
LHR09:30London Heathrow
£506
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London to Puerto Rico 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, momondo users made 279,928 searches. Data last updated 15 August 2025.
Use the filters below to find and compare flights from London to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 19/9

14:00-20:56

1 stop35h 56m

San Juan Luis Munoz Marin Intl

Fri 26/9

06:44-10:00

1 stop22h 16m

£454

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 9/9

12:10-12:17

1 stop29h 07m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:35

2 stops22h 35m

£477

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 12/11

07:25-03:48

1 stop24h 23m

San Juan Luis Munoz Marin Intl

Fri 21/11

02:00-20:45

1 stop14h 45m

£496

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 16/9

08:15-16:55

1 stop13h 40m

San Juan Luis Munoz Marin Intl

Sat 20/9

18:05-20:45

1 stop21h 40m

£499

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 6/11

16:00-03:17

2 stops39h 17m

San Juan Luis Munoz Marin Intl

Sat 15/11

09:20-20:40

2 stops31h 20m

£589

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 19/1

21:35-23:57

2 stops54h 22m

San Juan Luis Munoz Marin Intl

Sun 1/2

06:15-15:45

2 stops29h 30m

£594

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 19/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Sun 1/2

21:25-14:35

1 stop13h 10m

£960

LondonSan Juan

LCY - SJU

LCYSJU

London City

Thu 5/2

07:50-16:40

1 stop12h 50m

San Juan Luis Munoz Marin Intl

Sun 15/2

21:25-14:35

1 stop13h 10m

£965

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 9/2

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 19/2

21:25-14:05

1 stop12h 40m

£3,318

LondonSan Juan

LCY - SJU

LCYSJU

London City

Wed 7/1

07:50-19:55

1 stop16h 05m

San Juan Luis Munoz Marin Intl

Sun 18/1

21:25-14:35

1 stop13h 10m

£10,376

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Puerto Rico from

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

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

What is the cheapest month to fly to Puerto Rico?

In general, September is the cheapest month to fly from London to Puerto Rico. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £535. If you don’t want to visit Puerto Rico in September, then you should wait until November to fly from London, when ticket prices are also cheap, with an average price of £549.

What is the cheapest day to depart on your flight to Puerto Rico?

According to our data, Monday is the cheapest day to fly to Puerto Rico from London. The lowest ticket price found for a Monday departure recently was £475. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Puerto Rico is Friday, with ticket prices averaging around £635.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Flying to Puerto Rico from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as £562 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £718 on average. Flights to Puerto Rico from London in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Puerto Rico from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around £643 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from London for as low as £504 on momondo.

Cheap London to Puerto Rico flight deals and tips

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

Best price found

£301

Fastest flight time

12h 45m

Direct flights

None

Airports in Puerto Rico

1 airport
The best one-way flight to Puerto Rico from London in the past 72 hours is £301. The best return flight deal from London to Puerto Rico found on momondo in the last 72 hours is £454.
The fastest flight from London to Puerto Rico takes 12h 45m
There are no direct flights from London to Puerto Rico. Popular non-direct routes for this connection are London Gatwick Airport - San Juan Luis Munoz Marin Intl Airport, London Stansted Airport - San Juan Luis Munoz Marin Intl Airport and London Heathrow Airport - San Juan Luis Munoz Marin Intl Airport.
There is 1 airport near Puerto Rico: San Juan Luis Munoz Marin Intl (SJU)
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  • When did momondo last update prices for flights from London to Puerto Rico?

    Prices for flights from London to Puerto Rico are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The necessary travel and health documents for your Puerto Rico 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 London to Puerto Rico

Compare and see reviews for airlines that fly from London to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £340Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £420Free CancellationRating
7.0
526 reviews
Search Icelandair flights
JetBluePriceFrom £442Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
FinnairPriceFrom £452Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
IberiaPriceFrom £506Free CancellationRating
7.0
2,882 reviews
Search Iberia flights
British AirwaysPriceFrom £533Free CancellationRating
6.6
7,267 reviews
Search British Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Puerto Rico for you.

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

Yes. momondo allows you to filter the results for London to Puerto Rico flights to just show those with flexible booking policies.

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

Once you have performed a search for London to Puerto Rico flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from London to Puerto Rico now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Puerto Rico and let you know when they change.

An easier way to manage your Puerto Rico 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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Find better results for your trip to Puerto Rico

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