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Cheap flights from London to Puerto Rico from £325

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SJU
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap 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 24 October 2025.

Round-trip from

£489

One-way from

£325

Popular in

July

Cheapest in

September

Average price

£657
Icelandair
  • Icelandair
  • 13/11-11/12
  • 2 total stops
  • 44h 38m total
  • London to Puerto Rico
Search Deals
29/10
  • 29/10
  • 3 total stops
  • 59h 59m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£70 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 24 October 2025.

Thu 13/1109:20LHR - SJU
1 stop31h 24mIcelandair
Thu 11/1210:00SJU - LHR
2 stops16h 55mIcelandair
Deal found 22/10£489
Fri 7/1108:05LHR - SJU
1 stop23h 43mIcelandair
Sat 15/1106:10SJU - LHR
1 stop20h 45mIcelandair
Deal found 22/10£490
Tue 4/1109:20LHR - SJU
1 stop31h 24mIcelandair
Sat 8/1110:43SJU - LHR
2 stops18h 47mIcelandair
Deal found 22/10£491
Wed 19/1107:25LHR - SJU
1 stop14h 55mJetBlue
Tue 25/1101:59SJU - LHR
1 stop15h 41mJetBlue
Deal found 22/10£502
Thu 6/1109:20LHR - SJU
2 stops22h 28mIcelandair
Sat 15/1106:27SJU - LHR
2 stops20h 28mIcelandair
Deal found 23/10£503
Wed 12/1107:25LHR - SJU
2 stops33h 19mIcelandair
Thu 11/1215:40SJU - LHR
1 stop25h 05mIcelandair
Deal found 22/10£504
Sat 6/1214:00LGW - SJU
1 stop14h 16mMultiple Airlines
Sat 13/1207:10SJU - LGW
2 stops22h 55mMultiple Airlines
Deal found 22/10£508
Wed 3/1207:25LHR - SJU
1 stop15h 28mJetBlue
Wed 10/1213:41SJU - LHR
1 stop13h 14mJetBlue
Deal found 23/10£510
Tue 2/1207:25LHR - SJU
2 stops38h 32mIcelandair
Thu 4/1219:10SJU - LHR
2 stops21h 35mIcelandair
Deal found 22/10£519
Wed 19/1112:20LHR - SJU
2 stops17h 02mIcelandair
Tue 25/1101:59SJU - LHR
1 stop15h 41mIcelandair
Deal found 22/10£532
Wed 12/1107:25LHR - SJU
1 stop14h 55mIcelandair
Wed 19/1109:30SJU - LHR
2 stops17h 25mIcelandair
Deal found 23/10£533
Thu 27/1112:20LHR - SJU
1 stop15h 28mJetBlue
Sun 7/1208:02SJU - LHR
1 stop32h 43mJetBlue
Deal found 23/10£547

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 24 October 2025.
Use the filters below to find and compare flights from London to Puerto Rico that are best for you.

Fly from

London

Fly to

Puerto Rico

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 19/11

09:20-03:48

2 stops22h 28m

San Juan Luis Munoz Marin Intl

Wed 26/11

21:25-06:55

1 stop29h 30m

£490

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 6/12

14:00-00:16

1 stop14h 16m

San Juan Luis Munoz Marin Intl

Sat 13/12

07:10-10:05

2 stops22h 55m

£508

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Thu 27/11

14:00-00:24

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sun 7/12

12:00-10:00

2 stops42h 00m

£564

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 9/3

21:40-17:05

1 stop23h 25m

San Juan Luis Munoz Marin Intl

Wed 11/3

18:30-14:35

1 stop16h 05m

£574

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 2/3

21:40-11:35

1 stop17h 55m

San Juan Luis Munoz Marin Intl

Tue 3/3

18:30-14:35

1 stop16h 05m

£575

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 15/11

08:05-21:54

1 stop17h 49m

San Juan Luis Munoz Marin Intl

Sat 22/11

01:59-20:45

1 stop14h 46m

£586

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 17/1

14:00-09:52

1 stop23h 52m

San Juan Luis Munoz Marin Intl

Sat 24/1

06:00-20:40

3 stops34h 40m

£589

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Mon 26/1

11:00-13:48

2 stops30h 48m

San Juan Luis Munoz Marin Intl

Thu 5/2

06:15-09:50

2 stops23h 35m

£595

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/12

12:25-03:17

2 stops18h 52m

San Juan Luis Munoz Marin Intl

Wed 10/12

17:20-18:55

2 stops21h 35m

£604

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 11/12

07:25-22:23

2 stops18h 58m

San Juan Luis Munoz Marin Intl

Sun 28/12

08:10-09:30

1 stop21h 20m

£616

Flights are sorted by cheapest return flights first.

Deals found on 22/10

Showing 1-10 of 60 results
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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 £426). Flying from London to Puerto Rico in December is currently the most expensive (average of £544). 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.

What is the cheapest time of day to fly from LON to PR?

Find hourly flight availability from London to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 October 2025.

It’s optimal to fly from London to Puerto Rico in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at midday.

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 24 October 2025.
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
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
JetBlue
7.2
Good
2,908 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Icelandair
7.1
Good
561 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
2,997 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,469 reviews
Finnair
7.6
Good
1,333 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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 17h 49m. Fly via Icelandair, Avianca, or JetBlue 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 City - 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 £426). Flying from London to Puerto Rico in December is currently the most expensive (average of £544). 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
Heathrow to Montego Bay flights
Heathrow to Kingston flights
Gatwick to Montego Bay flights
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London City to Kingston flights
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Manchester to Bridgetown flights
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Gatwick to Castries flights
Gatwick to St. John's flights
London City to Punta Cana flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to St. George's flights
Heathrow to Kingstown flights
Heathrow to St. John's flights
Gatwick to Luis Munoz Marin Intl flights
Heathrow to Castries flights
Heathrow to Santo Domingo flights
Stansted to Punta Cana flights
Manchester to Montego Bay flights
Gatwick to Nassau flights
Gatwick to Santo Domingo flights
Heathrow to Roseau flights
Luton to Montego Bay flights
London City to Castries flights
Heathrow to George Town flights
Heathrow to Simpson Bay flights
Stansted to Montego Bay flights
Luton to Punta Cana flights
Birmingham to Montego Bay flights
London City to Luis Munoz Marin Intl flights
Heathrow to Basseterre flights
Gatwick to Havana flights
Gatwick to St. George's flights
Gatwick to Port of Spain flights
Gatwick to Basseterre flights
London City to Santo Domingo flights
Heathrow to Willemstad flights
Heathrow to Road Town flights
Manchester to Punta Cana flights
Stansted to Bridgetown flights
Stansted to Kingston flights
London City to St. John's flights

Top 6 airlines flying from London to Puerto Rico

Discover the top 6 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 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£335Average£1,131FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£442Average£597FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£452Average£553FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£466Average£630FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£512Average£816FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£542Average£873FlexibilityNo 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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