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Cheap flights from London to Puerto Rico from £282

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SJU
27 Apr — 4 May1
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 28 March 2026.

Sun 26/420:50
LHR
-
SJU
2 stops33h 08m
Multiple Airlines
Sun 3/514:45
SJU
-
LHR
1 stop15h 35m
Multiple Airlines
Deal found 27/3£539
Mon 4/508:15
LHR
-
SJU
1 stop20h 52m
JetBlue
Thu 14/512:00
SJU
-
LHR
1 stop16h 30m
JetBlue
Deal found 23/3£555
Wed 9/908:15
LHR
-
SJU
1 stop18h 09m
JetBlue
Wed 23/914:25
SJU
-
LHR
1 stop25h 20m
JetBlue
Deal found 25/3£558
Wed 22/411:55
LHR
-
SJU
1 stop17h 12m
JetBlue
Wed 29/414:35
SJU
-
LHR
1 stop13h 55m
JetBlue
Deal found 25/3£570
Sun 26/411:55
LHR
-
SJU
1 stop14h 05m
JetBlue
Sun 3/522:55
SJU
-
LHR
1 stop26h 35m
JetBlue
Deal found 27/3£570
Wed 4/1112:20
LHR
-
SJU
1 stop19h 28m
JetBlue
Mon 16/1120:50
SJU
-
LHR
1 stop20h 50m
JetBlue
Deal found 26/3£577
Mon 7/908:15
LHR
-
SJU
1 stop20h 55m
JetBlue
Mon 14/919:55
SJU
-
LHR
1 stop29h 35m
JetBlue
Deal found 23/3£577
Thu 30/408:40
LHR
-
SJU
1 stop22h 59m
JetBlue
Mon 4/506:15
SJU
-
LHR
1 stop22h 15m
JetBlue
Deal found 25/3£578
Sun 12/421:40
STN
-
SJU
2 stops49h 19m
Multiple Airlines
Wed 29/417:25
SJU
-
STN
1 stop15h 55m
Multiple Airlines
Deal found 26/3£579
Wed 22/411:55
LHR
-
SJU
1 stop14h 05m
JetBlue
Sat 2/506:20
SJU
-
LHR
1 stop33h 25m
JetBlue
Deal found 25/3£579
Sat 19/908:15
LHR
-
SJU
1 stop18h 09m
JetBlue
Sun 27/913:25
SJU
-
LHR
1 stop26h 20m
JetBlue
Deal found 27/3£580
Fri 24/408:15
LHR
-
SJU
1 stop20h 52m
JetBlue
Mon 4/522:55
SJU
-
LHR
1 stop26h 35m
JetBlue
Deal found 23/3£583

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 28 March 2026.

Round-trip from

£539

One-way from

£282

Popular in

July

Cheapest in

September

Average price

£682
KLM
  • KLM
  • 26/4-3/5
  • 3 total stops
  • 48h 43m total
  • London to Puerto Rico
Search Deals
18/4
  • 18/4
  • 2 total stops
  • 28h 30m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£72 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 28 March 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

LHR - SJU

LHRSJU

London Heathrow

Thu 23/4

08:15-00:07

1 stop20h 52m

San Juan Luis Munoz Marin Intl

Wed 29/4

17:30-20:45

1 stop22h 15m

£626

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 7/5

08:15-21:04

1 stop17h 49m

San Juan Luis Munoz Marin Intl

Mon 11/5

12:00-09:30

1 stop16h 30m

£637

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 11/4

08:45-22:15

2 stops18h 30m

San Juan Luis Munoz Marin Intl

Wed 29/4

17:25-14:20

1 stop15h 55m

£639
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

Wed 17/6

16:50-09:35

1 stop11h 45m

£658

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 14/4

15:55-17:10

2 stops30h 15m

San Juan Luis Munoz Marin Intl

Tue 26/5

18:35-21:00

2 stops21h 25m

£667

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 1/9

08:15-19:47

1 stop16h 32m

San Juan Luis Munoz Marin Intl

Sat 12/9

13:25-09:30

1 stop15h 05m

£673

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 7/6

12:20-21:42

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Thu 18/6

16:50-09:35

1 stop11h 45m

£682

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 22/4

14:00-23:24

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Tue 28/4

02:59-10:00

1 stop26h 01m

£689

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 4/5

14:00-08:49

1 stop23h 49m

San Juan Luis Munoz Marin Intl

Thu 14/5

20:27-10:00

1 stop32h 33m

£690

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 9/6

12:20-21:42

1 stop14h 22m

San Juan Luis Munoz Marin Intl

Wed 17/6

16:50-09:35

1 stop11h 45m

£692

Flights are sorted by cheapest return flights first.

Deals found on 26/3

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

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 £356). Flying from London to Puerto Rico in December is currently the most expensive (average of £543). 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 28 March 2026.
Check out reviews from past customers who have flown with Finnair,JetBlue, andIcelandair 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.
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.7
Good
1,374 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
JetBlue
7.2
Good
2,909 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Icelandair
7.0
Good
627 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Iberia
7.0
Good
3,157 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
British Airways
6.7
Okay
7,824 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Overall

7.7

Entertainment

6.9

Comfort

7.5

Food

6.7

Boarding

7.7

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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 20h 52m. Fly via JetBlue, Iberia, or Air Canada to get the fastest option. The distance from London to Puerto Rico is about 4179 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 Gatwick - San Juan Luis Munoz Marin Intl or London Stansted - 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 £356). Flying from London to Puerto Rico in December is currently the most expensive (average of £543). 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.
Heathrow to Bridgetown flights
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Heathrow to Castries flights
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Heathrow to St. George's flights
Gatwick to Montego Bay flights
Gatwick to Castries flights
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Heathrow to Nassau flights
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Heathrow to Willemstad flights
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London City to Montego Bay flights
Gatwick to Willemstad flights
Heathrow to Kingstown flights
Heathrow to Santo Domingo flights
Gatwick to Santo Domingo flights
Gatwick to Port of Spain flights
Heathrow to Port of Spain flights
Gatwick to St. George's flights
Manchester to Bridgetown flights
London City to Castries flights
Stansted to Santo Domingo flights
Heathrow to Castries flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to Providenciales flights
London City to Santo Domingo flights
Gatwick to Havana flights
Heathrow to Roseau flights
Gatwick to Nassau flights
Gatwick to Luis Munoz Marin Intl flights
Gatwick to Castries flights
Heathrow to George Town flights
Heathrow to Santiago de los Caballeros flights
Manchester to Punta Cana flights
Stansted to Port of Spain flights

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 28 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£335Average£1,046FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£412Average£618FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£493Average£767FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£509Average£653FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
AviancaCheapest£542Average£610FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£560Average£958FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£611Average£1,004FlexibilityNo cancel feeOn-time70%
Search British Airways 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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