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Cheap flights from London to Puerto Rico from £247

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SJU
29 Jan — 5 Feb1
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 30 December 2025.

Mon 29/1209:20LHR - SJU
1 stop28h 40mJetBlue
Mon 5/108:10SJU - LHR
1 stop33h 30mJetBlue
Deal found 28/12£787
Tue 30/1209:20LHR - SJU
1 stop14h 05mJetBlue
Thu 8/105:01SJU - LHR
1 stop12h 39mJetBlue
Deal found 28/12£793
Tue 30/1212:20LHR - SJU
1 stop34h 29mJetBlue
Sat 10/106:05SJU - LHR
1 stop34h 40mJetBlue
Deal found 30/12£817
Mon 29/1214:00LGW - SJU
1 stop23h 23mMultiple Airlines
Mon 5/110:33SJU - LGW
1 stop19h 27mMultiple Airlines
Deal found 28/12£1,175
Tue 30/1206:00LHR - SJU
2 stops23h 05mTAP AIR PORTUGAL
Sat 10/115:56SJU - LHR
2 stops19h 34mTAP AIR PORTUGAL
Deal found 29/12£1,213
Tue 30/1218:45LHR - SJU
1 stop26h 30mIberia
Thu 8/106:00SJU - LHR
1 stop26h 20mIberia
Deal found 30/12£1,303
Tue 30/1220:00LHR - SJU
2 stops29h 09mMultiple Airlines
Thu 8/114:15SJU - LHR
1 stop13h 50mMultiple Airlines
Deal found 30/12£1,325
Tue 30/1215:50LHR - SJU
1 stop24h 06mDelta
Thu 8/107:30SJU - LHR
2 stops19h 25mDelta
Deal found 29/12£1,330
Mon 29/1219:20LHR - SJU
2 stops29h 49mAir France
Mon 5/114:15SJU - LHR
2 stops27h 10mAir France
Deal found 28/12£1,338
Tue 30/1213:25LHR - SJU
2 stops34h 44mAir Canada
Sat 10/115:40SJU - LHR
1 stop34h 50mAir Canada
Deal found 28/12£1,346
Tue 30/1211:25LHR - SJU
1 stop12h 30mIberia
Sat 10/111:38SJU - LHR
2 stops16h 12mIberia
Deal found 30/12£1,349
Tue 30/1219:40LGW - SJU
1 stop24h 55mMultiple Airlines
Sat 10/121:25SJU - LGW
1 stop33h 25mMultiple Airlines
Deal found 29/12£1,459

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 30 December 2025.

Round-trip from

£496

One-way from

£247

Popular in

December

Cheapest in

September

Average price

£948
21/2-28/2
  • 21/2-28/2
  • 3 total stops
  • 46h 19m total
  • London to Puerto Rico
Search Deals
26/1
  • 26/1
  • 1 total stop
  • 29h 26m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 30 December 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

LGW - SJU

LGWSJU

London Gatwick

Sun 25/1

13:00-17:58

1 stop32h 58m

San Juan Luis Munoz Marin Intl

Thu 29/1

06:00-10:00

1 stop24h 00m

£499

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sun 1/2

13:00-17:58

1 stop32h 58m

San Juan Luis Munoz Marin Intl

Sat 7/2

18:11-06:00

2 stops31h 49m

£499

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/3

07:25-22:51

1 stop19h 26m

San Juan Luis Munoz Marin Intl

Wed 25/3

05:10-06:55

1 stop21h 45m

£508

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 5/2

14:35-17:05

2 stops30h 30m

San Juan Luis Munoz Marin Intl

Mon 9/2

10:52-22:40

3 stops31h 48m

£508

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 7/2

08:45-15:35

3 stops34h 50m

San Juan Luis Munoz Marin Intl

Sat 14/2

05:20-20:35

3 stops35h 15m

£512

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Sun 8/3

12:20-23:46

1 stop15h 26m

Aguadilla Borinquen

Wed 11/3

01:32-21:40

1 stop16h 08m

£542

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/2

12:20-02:24

1 stop18h 04m

San Juan Luis Munoz Marin Intl

Wed 18/2

14:45-06:55

1 stop12h 10m

£547

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/3

12:20-02:27

1 stop18h 07m

San Juan Luis Munoz Marin Intl

Sun 15/3

03:26-20:45

1 stop13h 19m

£550

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 3/2

08:10-19:55

1 stop15h 45m

San Juan Luis Munoz Marin Intl

Tue 10/2

21:25-20:15

1 stop18h 50m

£562

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 7/2

12:40-17:05

2 stops32h 25m

San Juan Luis Munoz Marin Intl

Sat 14/2

17:45-20:40

2 stops22h 55m

£563

Flights are sorted by cheapest return flights first.

Deals found on 30/12

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, June is the cheapest month in which you can book a flight from London to Puerto Rico (average of £436). Flying from London to Puerto Rico in December is currently the most expensive (average of £542). 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 30 December 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
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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
1,343 reviews
Finnair
7.6
Good
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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
2,901 reviews
Finnair
7.6
Good
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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
593 reviews
Finnair
7.6
Good
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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
3,058 reviews
Finnair
7.6
Good
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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
7,626 reviews
Finnair
7.6
Good
1,343 reviews
Check prices

Overall

7.6

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

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 19h 26m. Fly via JetBlue or United Airlines 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, June is the cheapest month in which you can book a flight from London to Puerto Rico (average of £436). Flying from London to Puerto Rico in December is currently the most expensive (average of £542). 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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Gatwick to Luis Munoz Marin Intl flights
Stansted to Montego Bay flights
Luton to Punta Cana flights
Gatwick to Port of Spain flights
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London City to Castries flights
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Luton to Montego Bay flights
London City to St. John's flights
Gatwick to Havana flights
Heathrow to George Town flights
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Manchester to Punta Cana flights
Stansted to Kingston flights
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Stansted to Luis Munoz Marin Intl flights
Heathrow to Roseau flights
Gatwick to Santo Domingo flights
Gatwick to Basseterre flights
Heathrow to Providenciales flights
Heathrow to Pointe-à-Pitre 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 30 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£342Average£985FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£447Average£537FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£448Average£605FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£482Average£646FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£499Average£875FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£536Average£947FlexibilityNo 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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