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Cheap flights from London to Puerto Rico from £337

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SJU
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Puerto Rico

Enter your travel dates to find the best prices.

Cheapest flights from London to Puerto Rico
Explore the most affordable flight options available from London to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2026.

Tue 2/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Sat 13/615:34
SJU
-
LHR
1 stop12h 56m
JetBlue
Deal found 29/4£580
Sat 14/1107:25
LHR
-
SJU
1 stop17h 20m
JetBlue
Sat 21/1120:20
SJU
-
LHR
1 stop20h 25m
JetBlue
Deal found 26/4£581
Wed 2/912:20
LGW
-
SJU
1 stop14h 12m
JetBlue
Mon 7/916:55
SJU
-
LGW
1 stop11h 40m
JetBlue
Deal found 29/4£582
Sat 7/1109:20
LHR
-
SJU
1 stop19h 05m
JetBlue
Wed 18/1116:00
SJU
-
LHR
1 stop13h 30m
JetBlue
Deal found 28/4£582
Wed 3/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Sun 14/613:12
SJU
-
LHR
1 stop15h 18m
JetBlue
Deal found 29/4£585
Thu 4/608:15
LHR
-
SJU
1 stop14h 15m
JetBlue
Wed 10/614:11
SJU
-
LHR
1 stop14h 19m
JetBlue
Deal found 29/4£586
Mon 8/612:20
LGW
-
SJU
1 stop14h 22m
JetBlue
Tue 9/615:25
SJU
-
LGW
1 stop13h 10m
JetBlue
Deal found 29/4£587
Wed 3/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Mon 15/611:50
SJU
-
LHR
1 stop16h 40m
JetBlue
Deal found 29/4£589
Sun 6/908:15
LHR
-
SJU
1 stop16h 35m
JetBlue
Sat 12/913:00
SJU
-
LHR
1 stop15h 30m
JetBlue
Deal found 29/4£595
Fri 5/608:15
LHR
-
SJU
1 stop14h 31m
JetBlue
Wed 10/614:11
SJU
-
LHR
1 stop14h 19m
JetBlue
Deal found 29/4£601
Mon 1/612:20
LGW
-
SJU
1 stop14h 22m
JetBlue
Sun 7/605:01
SJU
-
LGW
1 stop23h 34m
JetBlue
Deal found 30/4£607
Thu 3/911:55
LHR
-
SJU
1 stop17h 15m
JetBlue
Sat 12/913:00
SJU
-
LHR
1 stop15h 30m
JetBlue
Deal found 29/4£607

Find flight deals from London to Puerto Rico

Keep the following information in mind while searching for London to Puerto Rico flight deals. Data was last updated 1 May 2026.

Round-trip from

£580

One-way from

£337

Popular in

July

Cheapest in

February

Average price

£580
JetBlue
  • JetBlue
  • 2/6-13/6
  • 2 total stops
  • 28h 54m total
  • London to Puerto Rico
Search Deals
15/5
  • 15/5
  • 2 total stops
  • 38h 51m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 1 May 2026.
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

Cheapest return flight

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 4/6

12:20-21:42

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Tue 9/6

13:27-09:35

1 stop15h 08m

£650

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 20/9

08:15-19:32

1 stop16h 17m

San Juan Luis Munoz Marin Intl

Mon 5/10

06:00-06:30

1 stop19h 30m

£656

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 7/6

08:40-21:42

1 stop18h 02m

San Juan Luis Munoz Marin Intl

Wed 10/6

20:06-20:45

1 stop19h 39m

£675
Fastest return journey

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 7/6

12:20-21:42

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Sun 14/6

16:57-09:35

1 stop11h 38m

£677

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 8/6

14:00-23:59

1 stop14h 59m

San Juan Luis Munoz Marin Intl

Mon 15/6

02:59-10:00

1 stop26h 01m

£698

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 20/9

14:00-09:53

1 stop24h 53m

San Juan Luis Munoz Marin Intl

Mon 5/10

12:14-10:00

1 stop16h 46m

£698

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 14/9

14:00-09:53

1 stop24h 53m

San Juan Luis Munoz Marin Intl

Sun 27/9

12:14-10:00

1 stop16h 46m

£715

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 14/9

11:20-13:08

2 stops30h 48m

San Juan Luis Munoz Marin Intl

Sun 27/9

06:00-10:20

2 stops23h 20m

£786

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 2/7

14:00-12:42

1 stop27h 42m

San Juan Luis Munoz Marin Intl

Sun 12/7

13:42-10:00

1 stop15h 18m

£787

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Fri 9/10

12:05-13:08

2 stops30h 03m

San Juan Luis Munoz Marin Intl

Mon 19/10

06:12-15:35

2 stops28h 23m

£797

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from London to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Puerto Rico

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

The price you pay for your flight from London to Puerto Rico may vary depending on when you book. For the best chance of a lower fare, look to book 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London to Puerto Rico?

Currently, July is the cheapest month in which you can book a flight from London to Puerto Rico (average of £140). Flying from London to Puerto Rico in February is currently the most expensive (average of £943). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated 1 May 2026.
Check out reviews from past customers who have flown with JetBlue,Icelandair, andIberia from London to Puerto Rico to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
JetBlue
7.2
Good
2,970 reviews
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
Icelandair
7.0
Good
646 reviews
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
Iberia
7.0
Good
3,204 reviews
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
British Airways
6.7
Okay
7,937 reviews
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
Avianca
6.5
Okay
2,517 reviews
JetBlue
7.2
Good
2,970 reviews
Check prices

Comfort

7.5

Boarding

7.3

Entertainment

7.2

Crew

7.9

Overall

7.2

Food

6.6

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Related info for your journey

Find useful and relevant information for your journey from London to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Puerto Rico?

    There are many flights that can get you from London to Puerto Rico in 14h 22m. Fly via JetBlue, TAP AIR PORTUGAL, or Turkish Airlines to get the fastest option. The distance from London to Puerto Rico is about 4188 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from London to Puerto Rico?

    When deciding which route to take from London to Puerto Rico consider London Heathrow - San Juan Luis Munoz Marin Intl, London Stansted - San Juan Luis Munoz Marin Intl or London Gatwick - San Juan Luis Munoz Marin Intl as they are the most popular.

  • Can I find deals for flights from London to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on London to Puerto Rico flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Puerto Rico.

  • Can I find deals for business class flights from London to Puerto Rico?

    Yes. Cheapflights offers flight deals from London to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Puerto Rico?

    Currently, July is the cheapest month in which you can book a flight from London to Puerto Rico (average of £140). Flying from London to Puerto Rico in February is currently the most expensive (average of £943). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Birmingham to Montego Bay flights
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Gatwick to Kingstown flights
London City to Castries flights
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Top 7 airlines flying from London to Puerto Rico

Discover the top 7 airlines that operate flights from London to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£330Average£1,029FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£418Average£610FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£485Average£798FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£489Average£653FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
AviancaCheapest£533Average£590FlexibilityNo cancel feeOn-time71%
Search Avianca flights
British AirwaysCheapest£534Average£987FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£579Average£946FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Puerto Rico?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Puerto Rico from London today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from London to Puerto Rico?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Puerto Rico for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Puerto Rico with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Puerto Rico, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Puerto Rico become cheaper?

Yes, Cheapflights offers price alerts on London to Puerto Rico flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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