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Cheap flights from London to Puerto Rico from £219

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SJU
18 Jun — 25 Jun1
1 adult

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 13 June 2025.

Round-trip from

£470

One-way from

£219

Popular in

July

Cheapest in

September

Average price

£628
23/9-30/9
  • 23/9-30/9
  • 4 total stops
  • 58h 38m total
  • London to Puerto Rico
Search Deals
5/9
  • 5/9
  • 2 total stops
  • 30h 56m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from London to Puerto Rico

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 13 June 2025.

Tue 23/909:50LHR - SJU
2 stops29h 04mMultiple Airlines
Tue 30/921:26SJU - LHR
2 stops29h 34mMultiple Airlines
Deal found 10/6£470
Tue 9/912:10LGW - SJU
2 stops28h 35mIcelandair
Wed 24/919:50SJU - LGW
1 stop32h 45mIcelandair
Deal found 12/6£470
Tue 9/908:25LHR - SJU
1 stop32h 42mIcelandair
Sun 21/912:50SJU - LHR
1 stop26h 55mIcelandair
Deal found 11/6£503
Tue 4/1108:25LHR - SJU
1 stop18h 35mJetBlue
Thu 13/1106:15SJU - LHR
1 stop19h 40mJetBlue
Deal found 12/6£506
Tue 1/710:00LGW - SJU
1 stop16h 04mMultiple Airlines
Tue 8/720:45SJU - LGW
1 stop29h 10mMultiple Airlines
Deal found 10/6£508
Wed 9/712:10LGW - SJU
1 stop17h 41mJetBlue
Thu 24/715:25SJU - LGW
1 stop13h 10mJetBlue
Deal found 11/6£514
Sat 15/1116:35LGW - SJU
2 stops34h 25mTAP AIR PORTUGAL
Sat 22/1106:15SJU - LGW
2 stops23h 35mTAP AIR PORTUGAL
Deal found 12/6£644
Thu 6/1108:15LHR - SJU
2 stops23h 02mTAP AIR PORTUGAL
Sat 15/1107:10SJU - LHR
2 stops24h 15mTAP AIR PORTUGAL
Deal found 12/6£647
Mon 22/906:05STN - SJU
2 stops31h 20mMultiple Airlines
Mon 29/912:55SJU - STN
3 stops24h 05mMultiple Airlines
Deal found 10/6£673
Mon 22/919:10LCY - SJU
2 stops35h 01mMultiple Airlines
Sun 28/902:06SJU - LCY
2 stops33h 19mMultiple Airlines
Deal found 10/6£730
Sat 15/1119:35LGW - SJU
1 stop28h 20mIberia
Tue 25/1118:05SJU - LGW
1 stop12h 10mIberia
Deal found 12/6£814
Fri 12/907:45LCY - SJU
2 stops19h 57mVirgin Atlantic
Fri 19/907:00SJU - LCY
2 stops21h 30mVirgin Atlantic
Deal found 10/6£821

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 13 June 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

Tue 23/9

09:50-09:54

2 stops29h 04m

San Juan Luis Munoz Marin Intl

Tue 30/9

21:26-08:00

2 stops29h 34m

£470

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 9/9

12:10-11:45

2 stops28h 35m

San Juan Luis Munoz Marin Intl

Wed 24/9

19:50-09:35

1 stop32h 45m

£470

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:25-12:07

1 stop32h 42m

San Juan Luis Munoz Marin Intl

Sun 21/9

12:50-20:45

1 stop26h 55m

£503

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 4/11

12:20-00:37

1 stop16h 17m

San Juan Luis Munoz Marin Intl

Wed 12/11

01:59-20:45

1 stop14h 46m

£506

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Tue 1/7

10:00-21:04

1 stop16h 04m

San Juan Luis Munoz Marin Intl

Tue 8/7

20:45-06:55

1 stop29h 10m

£508

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Wed 9/7

12:10-00:51

1 stop17h 41m

San Juan Luis Munoz Marin Intl

Thu 24/7

15:25-09:35

1 stop13h 10m

£514

LondonSan Juan

LGW - SJU

LGWSJU

London Gatwick

Sat 15/11

16:35-23:00

2 stops34h 25m

San Juan Luis Munoz Marin Intl

Sat 22/11

06:15-09:50

2 stops23h 35m

£644

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 6/11

08:15-03:17

2 stops23h 02m

San Juan Luis Munoz Marin Intl

Sat 15/11

07:10-11:25

2 stops24h 15m

£647

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Mon 22/9

06:05-08:25

2 stops31h 20m

San Juan Luis Munoz Marin Intl

Mon 29/9

12:55-18:00

3 stops24h 05m

£673

LondonSan Juan

LCY - SJU

LCYSJU

London City

Mon 22/9

19:10-01:11

2 stops35h 01m

San Juan Luis Munoz Marin Intl

Sun 28/9

02:06-16:25

2 stops33h 19m

£730

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 44 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, April is the cheapest month in which you can book a flight from London to Puerto Rico (average of £631). Flying from London to Puerto Rico in July is currently the most expensive (average of £1,027). 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 13 June 2025.

When flying from London to Puerto Rico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit Puerto Rico when rainfall is around 55.0 mm.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

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 13 June 2025.
Peruse reviews from past customers who have flown with Delta, KLM and United Airlines from London to Puerto Rico to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very Good
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
JetBlue
7.3
Good
2,923 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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.

  • What are the cheapest airlines to fly from London to Puerto Rico one-way?

    £543 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Avianca and Iberia, with prices starting from £546 and £548, respectively.

  • 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, April is the cheapest month in which you can book a flight from London to Puerto Rico (average of £631). Flying from London to Puerto Rico in July is currently the most expensive (average of £1,027). 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 Montego Bay flights
Heathrow to Bridgetown flights
Gatwick to Montego Bay flights
Heathrow to Kingston flights
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Heathrow to Castries flights
Heathrow to Punta Cana flights
London City to Montego Bay flights
Gatwick to Castries flights
Heathrow to Luis Munoz Marin Intl flights
Heathrow to St. John's flights
London City to Kingston flights
Heathrow to St. George's flights
Luton to Montego Bay flights
Gatwick to St. John's flights
Heathrow to Port of Spain flights
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Gatwick to Luis Munoz Marin Intl flights
London City to Bridgetown flights
London City to Punta Cana flights
Stansted to Montego Bay flights
Heathrow to Kingstown flights
Heathrow to Santo Domingo flights
Manchester to Montego Bay flights
Stansted to Punta Cana flights
Heathrow to George Town flights
Manchester to Bridgetown flights
London City to Castries flights
Gatwick to Santo Domingo flights
Gatwick to St. George's flights
Manchester to Punta Cana flights
Gatwick to Castries flights
London City to Luis Munoz Marin Intl flights
Stansted to Kingston flights
Gatwick to Nassau flights
Gatwick to Port of Spain flights
Gatwick to George Town flights
Gatwick to Havana flights
Heathrow to Basseterre flights
Stansted to Bridgetown flights
Heathrow to Castries flights
Luton to Punta Cana flights
Birmingham to Montego Bay flights
Gatwick to Basseterre flights
London City to Santo Domingo flights
Heathrow to Road Town flights
Edinburgh to Bridgetown flights
Gatwick to Kingstown 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£355Average£1,114FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£408Average£593FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£412Average£546FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£420Average£620FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£506Average£772FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£532Average£689FlexibilityNo 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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