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Cheap flights from London to Puerto Rico from £277

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 7/11. 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

Iberia Logo
09:15 - 19:55LHR-SJU
14h 40m1 stop
Iberia Logo
18:10 - 10:35SJU-LHR
12h 25m1 stop
£489Iberia
Find Deal
Tue, 3 Feb - Mon, 9 Feb
Logo
14:00 - 01:44LGW-SJU
16h 44m1 stop
Logo
15:19 - 10:00SJU-LGW
13h 41m1 stop
£500
Find Deal
Tue, 14 Oct - Tue, 21 Oct
JetBlue Logo
09:20 - 23:56LHR-SJU
18h 36m1 stop
JetBlue Logo
11:15 - 09:30SJU-LHR
18h 15m1 stop
£508JetBlue
Find Deal
Mon, 2 Feb - Tue, 10 Feb
JetBlue Logo
12:20 - 01:57LHR-SJU
17h 37m1 stop
JetBlue Logo
15:40 - 09:30SJU-LHR
13h 50m1 stop
£512JetBlue
Find Deal
Mon, 24 Nov - Sat, 6 Dec
Icelandair Logo
08:25 - 12:49LHR-SJU
33h 24m1 stop
Icelandair Logo
19:10 - 06:55SJU-LHR
31h 45m1 stop
£577Icelandair
Find Deal
Fri, 17 Oct - Sun, 26 Oct
Icelandair Logo
08:15 - 21:24LHR-SJU
18h 09m1 stop
Icelandair Logo
18:02 - 20:45SJU-LHR
22h 43m2 stops
£592Icelandair
Find Deal
Fri, 17 Oct - Sun, 26 Oct
TAP AIR PORTUGAL Logo
16:00 - 03:17LGW-SJU
39h 17m2 stops
TAP AIR PORTUGAL Logo
09:20 - 20:40SJU-LGW
31h 20m2 stops
£592TAP AIR PORTUGAL
Find Deal
Thu, 6 Nov - Sat, 15 Nov
TAP AIR PORTUGAL Logo
16:35 - 23:59LGW-SJU
35h 24m2 stops
TAP AIR PORTUGAL Logo
12:49 - 20:40SJU-LGW
27h 51m2 stops
£595TAP AIR PORTUGAL
Find Deal
Sat, 8 Nov - Thu, 13 Nov
Virgin Atlantic Logo
08:40 - 02:21LCY-SJU
21h 41m2 stops
Virgin Atlantic Logo
03:45 - 08:50SJU-LCY
25h 05m2 stops
£1,645Virgin Atlantic
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Sat, 20 Dec - Sat, 27 Dec
Virgin Atlantic Logo
08:40 - 02:21LCY-SJU
21h 41m2 stops
Virgin Atlantic Logo
03:45 - 08:50SJU-LCY
25h 05m2 stops
£1,676Virgin Atlantic
Find Deal
Sat, 20 Dec - Sat, 27 Dec

Icelandair flights from London to Puerto Rico

Our best Icelandair deals on London to Puerto Rico flight tickets
Icelandair
17 Oct
LHR08:25London Heathrow
33h 24m
1 stop
SJU12:49San Juan Luis Munoz Marin Intl
26 Oct
SJU19:10San Juan Luis Munoz Marin Intl
31h 45m
1 stop
LHR06:55London Heathrow
£577
Find similar
Icelandair
17 Oct
LHR08:15London Heathrow
18h 09m
1 stop
SJU21:24San Juan Luis Munoz Marin Intl
26 Oct
SJU18:02San Juan Luis Munoz Marin Intl
22h 43m
2 stops
LHR20:45London Heathrow
£592
Find similar
Icelandair
16 Dec
LHR07:25London Heathrow
24h 23m
1 stop
SJU03:48San Juan Luis Munoz Marin Intl
16 Jan
SJU13:10San Juan Luis Munoz Marin Intl
27h 35m
2 stops
LHR20:45London Heathrow
£616
Find similar

Delta flights from London to Puerto Rico

Our best Delta deals on London to Puerto Rico flight tickets
Delta
10 Mar
LCY07:45London City
18h 33m
2 stops
SJU22:18San Juan Luis Munoz Marin Intl
12 Mar
SJU17:36San Juan Luis Munoz Marin Intl
34h 34m
2 stops
LCY08:10London City
£983
Find similar
Delta
21 Sept
LHR17:25London Heathrow
24h 34m
2 stops
SJU12:59San Juan Luis Munoz Marin Intl
29 Sept
SJU07:30San Juan Luis Munoz Marin Intl
20h 25m
2 stops
LHR08:55London Heathrow
£6,815
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 16 September 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

Tue 3/2

09:15-19:55

1 stop14h 40m

San Juan Luis Munoz Marin Intl

Mon 9/2

18:10-10:35

1 stop12h 25m

£489

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 14/10

14:00-01:44

1 stop16h 44m

San Juan Luis Munoz Marin Intl

Tue 21/10

15:19-10:00

1 stop13h 41m

£500

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 2/2

09:20-23:56

1 stop18h 36m

San Juan Luis Munoz Marin Intl

Tue 10/2

11:15-09:30

1 stop18h 15m

£508

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 24/11

12:20-01:57

1 stop17h 37m

San Juan Luis Munoz Marin Intl

Sat 6/12

15:40-09:30

1 stop13h 50m

£512

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 17/10

08:25-12:49

1 stop33h 24m

San Juan Luis Munoz Marin Intl

Sun 26/10

19:10-06:55

1 stop31h 45m

£577

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 17/10

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Sun 26/10

18:02-20:45

2 stops22h 43m

£592

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

£592

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 8/11

16:35-23:59

2 stops35h 24m

San Juan Luis Munoz Marin Intl

Thu 13/11

12:49-20:40

2 stops27h 51m

£595

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 20/12

08:40-02:21

2 stops21h 41m

San Juan Luis Munoz Marin Intl

Sat 27/12

03:45-08:50

2 stops25h 05m

£1,645

LondonSan Juan

LCY - SJU

LCYSJU

London City

Sat 20/12

08:40-02:21

2 stops21h 41m

San Juan Luis Munoz Marin Intl

Sat 27/12

03:45-08:50

2 stops25h 05m

£1,676

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 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 £536. 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 £551.

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 £474. 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 £634.

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 £561 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 £716 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 £630 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 £508 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 £340Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £439Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
IcelandairPriceFrom £444Free CancellationRating
7.0
544 reviews
Search Icelandair flights
FinnairPriceFrom £446Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
IberiaPriceFrom £505Free CancellationRating
7.0
2,924 reviews
Search Iberia flights
British AirwaysPriceFrom £532Free CancellationRating
6.6
7,361 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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