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Cheap flights from London to Puerto Rico from £258

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 6/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
08:05 - 19:13LHR-SJU
15h 08m1 stop
JetBlue Logo
01:59 - 20:45SJU-LHR
14h 46m1 stop
£482JetBlue
Find Deal
Sat, 7 Feb - Sat, 14 Feb
Icelandair Logo
08:05 - 08:49LHR-SJU
28h 44m2 stops
Icelandair Logo
05:26 - 09:30SJU-LHR
24h 04m1 stop
£483Icelandair
Find Deal
Mon, 17 Nov - Sun, 23 Nov
Icelandair Logo
08:05 - 09:46LHR-SJU
29h 41m2 stops
Icelandair Logo
08:15 - 09:30SJU-LHR
21h 15m1 stop
£484Icelandair
Find Deal
Sat, 24 Jan - Sun, 1 Feb
JetBlue Logo
08:05 - 02:33LHR-SJU
22h 28m1 stop
JetBlue Logo
07:20 - 20:45SJU-LHR
33h 25m1 stop
£485JetBlue
Find Deal
Sat, 7 Feb - Sun, 15 Feb
TAP AIR PORTUGAL Logo
10:10 - 13:48LGW-SJU
31h 38m2 stops
TAP AIR PORTUGAL Logo
07:00 - 20:40SJU-LGW
33h 40m2 stops
£585TAP AIR PORTUGAL
Find Deal
Sat, 24 Jan - Sat, 31 Jan
TAP AIR PORTUGAL Logo
11:00 - 01:51LGW-SJU
42h 51m2 stops
TAP AIR PORTUGAL Logo
06:00 - 09:50SJU-LGW
23h 50m2 stops
£587TAP AIR PORTUGAL
Find Deal
Mon, 2 Mar - Wed, 11 Mar
Iberia Logo
07:50 - 19:55LCY-SJU
16h 05m1 stop
Iberia Logo
21:40 - 14:05SJU-LCY
12h 25m1 stop
£934Iberia
Find Deal
Fri, 5 Dec - Tue, 9 Dec
Iberia Logo
07:50 - 16:35LCY-SJU
12h 45m1 stop
Iberia Logo
21:25 - 14:35SJU-LCY
13h 10m1 stop
£960Iberia
Find Deal
Wed, 25 Feb - Sun, 1 Mar
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£990British Airways
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Mon, 26 Jan - Thu, 5 Feb
British Airways Logo
09:10 - 19:55LCY-SJU
14h 45m1 stop
British Airways Logo
21:25 - 14:05SJU-LCY
12h 40m1 stop
£995British Airways
Find Deal
Mon, 26 Jan - Thu, 5 Feb

Icelandair flights from London to Puerto Rico

Our best Icelandair deals on London to Puerto Rico flight tickets
Icelandair
17 Nov
LHR08:05London Heathrow
28h 44m
2 stops
SJU08:49San Juan Luis Munoz Marin Intl
23 Nov
SJU05:26San Juan Luis Munoz Marin Intl
24h 04m
1 stop
LHR09:30London Heathrow
£483
Find similar
Icelandair
24 Jan
LHR08:05London Heathrow
29h 41m
2 stops
SJU09:46San Juan Luis Munoz Marin Intl
1 Feb
SJU08:15San Juan Luis Munoz Marin Intl
21h 15m
1 stop
LHR09:30London Heathrow
£484
Find similar
Icelandair
12 Nov
LHR07:25London Heathrow
18h 29m
1 stop
SJU21:54San Juan Luis Munoz Marin Intl
19 Nov
SJU14:33San Juan Luis Munoz Marin Intl
27h 07m
2 stops
LHR21:40London Heathrow
£487
Find similar

British Airways flights from London to Puerto Rico

Our best British Airways deals on London to Puerto Rico flight tickets
British Airways
26 Jan
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
5 Feb
SJU21:25San Juan Luis Munoz Marin Intl
12h 40m
1 stop
LCY14:05London City
£990
Find similar
British Airways
26 Jan
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
5 Feb
SJU21:25San Juan Luis Munoz Marin Intl
12h 40m
1 stop
LCY14:05London City
£995
Find similar
British Airways
3 Mar
LCY09:10London City
14h 45m
1 stop
SJU19:55San Juan Luis Munoz Marin Intl
10 Mar
SJU21:25San Juan Luis Munoz Marin Intl
12h 40m
1 stop
LCY14:05London City
£1,048
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 17 October 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

LHR - SJU

LHRSJU

London Heathrow

Sat 7/2

08:05-19:13

1 stop15h 08m

San Juan Luis Munoz Marin Intl

Sat 14/2

01:59-20:45

1 stop14h 46m

£482

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 17/11

08:05-08:49

2 stops28h 44m

San Juan Luis Munoz Marin Intl

Sun 23/11

05:26-09:30

1 stop24h 04m

£483

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 24/1

08:05-09:46

2 stops29h 41m

San Juan Luis Munoz Marin Intl

Sun 1/2

08:15-09:30

1 stop21h 15m

£484

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 7/2

08:05-02:33

1 stop22h 28m

San Juan Luis Munoz Marin Intl

Sun 15/2

07:20-20:45

1 stop33h 25m

£485

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 24/1

10:10-13:48

2 stops31h 38m

San Juan Luis Munoz Marin Intl

Sat 31/1

07:00-20:40

2 stops33h 40m

£585

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 2/3

11:00-01:51

2 stops42h 51m

San Juan Luis Munoz Marin Intl

Wed 11/3

06:00-09:50

2 stops23h 50m

£587

LondonSan Juan

LCY - SJU

LCYSJU

London City

Fri 5/12

07:50-19:55

1 stop16h 05m

San Juan Luis Munoz Marin Intl

Tue 9/12

21:40-14:05

1 stop12h 25m

£934

LondonSan Juan

LCY - SJU

LCYSJU

London City

Wed 25/2

07:50-16:35

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Sun 1/3

21:25-14:35

1 stop13h 10m

£960

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-14:05

1 stop12h 40m

£990

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 26/1

09:10-19:55

1 stop14h 45m

San Juan Luis Munoz Marin Intl

Thu 5/2

21:25-14:05

1 stop12h 40m

£995

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 £531. If you don’t want to visit Puerto Rico in September, then you should wait until January to fly from London, when ticket prices are also cheap, with an average price of £546.

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 £480. 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 £641.

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 £567 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 £725 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 £637 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 £522 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

Direct flights

None
There are no direct flights from London to Puerto Rico. There are no popular flight routes from London to Puerto Rico.
Search flight deals

  • 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 £332Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £438Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
FinnairPriceFrom £449Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
IcelandairPriceFrom £465Free CancellationRating
7.0
556 reviews
Search Icelandair flights
IberiaPriceFrom £510Free CancellationRating
7.0
2,995 reviews
Search Iberia flights
British AirwaysPriceFrom £538Free CancellationRating
6.7
7,459 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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Popular flights according to clicks in the last 7 days on momondo
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