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Cheap flights from London Heathrow Airport to Puerto Rico from £376

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 Heathrow Airport to Puerto Rico departing on 15/12. 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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Find the cheapest flights from London Heathrow Airport to Puerto Rico

Cheap return flights

Icelandair Logo
08:15 - 22:32LHR-SJU
19h 17m1 stop
Icelandair Logo
06:00 - 09:30SJU-LHR
22h 30m1 stop
£492Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
Icelandair Logo
08:15 - 22:32LHR-SJU
19h 17m1 stop
Icelandair Logo
06:00 - 09:30SJU-LHR
22h 30m1 stop
£494Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
Icelandair Logo
08:25 - 22:32LHR-SJU
19h 07m2 stops
Icelandair Logo
13:25 - 09:30SJU-LHR
15h 05m1 stop
£496Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
Icelandair Logo
08:25 - 22:32LHR-SJU
19h 07m2 stops
Icelandair Logo
13:25 - 09:30SJU-LHR
15h 05m1 stop
£499Icelandair
Find Deal
Tue, 9 Sep - Wed, 24 Sep
JetBlue Logo
07:25 - 02:48LHR-SJU
23h 23m1 stop
JetBlue Logo
12:30 - 09:30SJU-LHR
17h 00m1 stop
£501JetBlue
Find Deal
Sat, 1 Nov - Tue, 18 Nov
JetBlue Logo
08:15 - 21:24LHR-SJU
18h 09m1 stop
JetBlue Logo
13:00 - 06:30SJU-LHR
12h 30m1 stop
£509JetBlue
Find Deal
Wed, 3 Sep - Thu, 18 Sep
Avianca Logo
22:05 - 16:50LHR-SJU
23h 45m1 stop
Avianca Logo
18:15 - 15:35SJU-LHR
16h 20m1 stop
£544Avianca
Find Deal
Thu, 11 Sep - Wed, 24 Sep
Logo
14:45 - 09:56LHR-SJU
24h 11m2 stops
Logo
06:22 - 06:25SJU-LHR
19h 03m1 stop
£577
Find Deal
Sat, 4 Oct - Sat, 11 Oct
Air Canada Logo
09:00 - 23:57LHR-BQN
18h 57m2 stops
Air Canada Logo
01:09 - 07:10BQN-LHR
26h 01m2 stops
£1,058Air Canada
Find Deal
Sat, 15 Nov - Tue, 18 Nov
Air Canada Logo
09:00 - 23:57LHR-BQN
18h 57m2 stops
Air Canada Logo
01:09 - 07:10BQN-LHR
26h 01m2 stops
£1,060Air Canada
Find Deal
Sat, 15 Nov - Tue, 18 Nov

Icelandair flights from London Heathrow Airport to Puerto Rico

Our best Icelandair deals on London Heathrow Airport to Puerto Rico flight tickets
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
£492
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
£494
Find similar
Icelandair
9 Sept
LHR08:25London Heathrow
19h 07m
2 stops
SJU22:32San Juan Luis Munoz Marin Intl
24 Sept
SJU13:25San Juan Luis Munoz Marin Intl
15h 05m
1 stop
LHR09:30London Heathrow
£496
Find similar

JetBlue flights from London Heathrow Airport to Puerto Rico

Our best JetBlue deals on London Heathrow Airport to Puerto Rico flight tickets
JetBlue
1 Nov
LHR07:25London Heathrow
23h 23m
1 stop
SJU02:48San Juan Luis Munoz Marin Intl
18 Nov
SJU12:30San Juan Luis Munoz Marin Intl
17h 00m
1 stop
LHR09:30London Heathrow
£501
Find similar
JetBlue
3 Sept
LHR08:15London Heathrow
18h 09m
1 stop
SJU21:24San Juan Luis Munoz Marin Intl
18 Sept
SJU13:00San Juan Luis Munoz Marin Intl
12h 30m
1 stop
LHR06:30London Heathrow
£509
Find similar
JetBlue
18 Sept
LHR11:55London Heathrow
14h 29m
1 stop
SJU21:24San Juan Luis Munoz Marin Intl
25 Sept
SJU13:00San Juan Luis Munoz Marin Intl
12h 30m
1 stop
LHR06:30London Heathrow
£511
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 21 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:30

1 stop22h 30m

£492

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:30

1 stop22h 30m

£494

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:25-22:32

2 stops19h 07m

San Juan Luis Munoz Marin Intl

Wed 24/9

13:25-09:30

1 stop15h 05m

£496

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:25-22:32

2 stops19h 07m

San Juan Luis Munoz Marin Intl

Wed 24/9

13:25-09:30

1 stop15h 05m

£499

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 1/11

07:25-02:48

1 stop23h 23m

San Juan Luis Munoz Marin Intl

Tue 18/11

12:30-09:30

1 stop17h 00m

£501

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Thu 18/9

13:00-06:30

1 stop12h 30m

£509

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 11/9

22:05-16:50

1 stop23h 45m

San Juan Luis Munoz Marin Intl

Wed 24/9

18:15-15:35

1 stop16h 20m

£544

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 4/10

14:45-09:56

2 stops24h 11m

San Juan Luis Munoz Marin Intl

Sat 11/10

06:22-06:25

1 stop19h 03m

£577

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Sat 15/11

09:00-23:57

2 stops18h 57m

Aguadilla Borinquen

Tue 18/11

01:09-07:10

2 stops26h 01m

£1,058

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Sat 15/11

09:00-23:57

2 stops18h 57m

Aguadilla Borinquen

Tue 18/11

01:09-07:10

2 stops26h 01m

£1,060

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

How to get the cheapest flight ticket from London Heathrow Airport 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, November is the cheapest month to fly from London Heathrow Airport to Puerto Rico. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £559. If you don’t want to visit Puerto Rico in November, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £560.

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 Heathrow Airport. The lowest ticket price found for a Monday departure recently was £478. 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 £639.

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

Flying to Puerto Rico from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as £565 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 £722 on average. Flights to Puerto Rico from London Heathrow Airport 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around £647 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 Heathrow Airport for as low as £508 on momondo.

Cheap London Heathrow Airport to Puerto Rico flight deals and tips

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

Direct flights

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

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

    Prices for flights from London Heathrow Airport to Puerto Rico are updated daily.

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

  • How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to Puerto Rico.

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

    The required travel and health documents for your Puerto Rico trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Puerto Rico. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Heathrow Airport to Puerto Rico

Compare and see reviews for airlines that fly from London Heathrow Airport to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £343Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £453Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
FinnairPriceFrom £453Free CancellationRating
7.6
1,320 reviews
Search Finnair flights
IcelandairPriceFrom £455Free CancellationRating
7.0
528 reviews
Search Icelandair flights
IberiaPriceFrom £509Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
British AirwaysPriceFrom £554Free CancellationRating
6.7
7,291 reviews
Search British Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Puerto Rico. momondo saves you time and could save you money on your trip.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Puerto Rico.

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

Yes momondo offers price alerts on flights to Puerto Rico from London. 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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Find better results for your trip to Puerto Rico

Popular Cities in Puerto Rico

Popular flights according to clicks in the last 7 days on momondo
Flights to San Juanfrom £450
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