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Cheap flights from London Heathrow Airport to Puerto Rico from £312

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Puerto Rico

Keep the following information in mind while searching for Heathrow to Puerto Rico flight deals. Data was last updated 16 January 2026.

Round-trip from

£416

One-way from

£312

Popular in

December

Cheapest in

September

Average price

£604
JetBlue
  • JetBlue
  • 15/2-3/3
  • 2 total stops
  • 33h 00m total
  • London to Puerto Rico
Search Deals
19/4
  • 19/4
  • 2 total stops
  • 20h 25m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£27 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 January 2026
Search Deals

Find flight deals from Heathrow to Puerto Rico

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Puerto Rico
Explore the most affordable flight options available from Heathrow to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 January 2026.

Sun 15/209:20
LHR
-
SJU
1 stop20h 30m
JetBlue
Wed 25/223:59
SJU
-
LHR
1 stop17h 41m
JetBlue
Deal found 14/1£416
Fri 13/312:20
LHR
-
SJU
1 stop17h 05m
JetBlue
Wed 18/311:45
SJU
-
LHR
1 stop15h 10m
JetBlue
Deal found 14/1£417
Sat 28/212:20
LHR
-
SJU
1 stop16h 09m
JetBlue
Sat 7/320:52
SJU
-
LHR
1 stop19h 53m
JetBlue
Deal found 14/1£424
Sun 15/209:20
LHR
-
SJU
1 stop20h 30m
JetBlue
Fri 27/223:59
SJU
-
LHR
1 stop18h 01m
JetBlue
Deal found 14/1£434
Wed 11/209:20
LHR
-
SJU
1 stop20h 02m
JetBlue
Sat 28/205:10
SJU
-
LHR
1 stop12h 50m
JetBlue
Deal found 14/1£439
Mon 9/312:20
LHR
-
SJU
1 stop14h 24m
JetBlue
Thu 19/305:01
SJU
-
LHR
1 stop12h 39m
JetBlue
Deal found 14/1£455
Wed 11/209:20
LHR
-
SJU
1 stop20h 02m
JetBlue
Fri 27/223:59
SJU
-
LHR
1 stop18h 01m
JetBlue
Deal found 14/1£456
Fri 13/312:20
LHR
-
SJU
1 stop17h 05m
JetBlue
Sun 15/303:26
SJU
-
LHR
1 stop13h 19m
JetBlue
Deal found 14/1£457
Thu 19/209:20
LHR
-
SJU
1 stop17h 33m
JetBlue
Sat 28/205:10
SJU
-
LHR
1 stop12h 50m
JetBlue
Deal found 13/1£463
Fri 13/312:20
LHR
-
SJU
1 stop17h 05m
JetBlue
Thu 19/305:01
SJU
-
LHR
1 stop12h 39m
JetBlue
Deal found 14/1£472
Wed 11/209:20
LHR
-
SJU
1 stop20h 02m
JetBlue
Mon 2/323:59
SJU
-
LHR
1 stop17h 41m
JetBlue
Deal found 14/1£479
Fri 6/312:20
LHR
-
SJU
1 stop19h 35m
JetBlue
Sat 14/303:26
SJU
-
LHR
1 stop13h 19m
JetBlue
Deal found 14/1£480

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 16 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Puerto Rico that are best for you.

Fly from

Heathrow

Fly to

Puerto Rico

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

12:20-01:25

1 stop17h 05m

San Juan Luis Munoz Marin Intl

Wed 18/3

11:45-06:55

1 stop15h 10m

£417

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

08:05-01:25

1 stop21h 20m

San Juan Luis Munoz Marin Intl

Mon 16/3

03:26-21:40

1 stop14h 14m

£417

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/3

09:20-00:55

1 stop19h 35m

San Juan Luis Munoz Marin Intl

Sun 15/3

03:26-20:45

1 stop13h 19m

£439

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 9/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sun 15/3

03:26-20:45

1 stop13h 19m

£439

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/3

09:20-00:55

1 stop19h 35m

San Juan Luis Munoz Marin Intl

Wed 18/3

03:26-21:40

1 stop14h 14m

£455

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Thu 19/3

05:01-21:40

1 stop12h 39m

£455

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

12:20-01:25

1 stop17h 05m

San Juan Luis Munoz Marin Intl

Thu 19/3

05:01-21:40

1 stop12h 39m

£472

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Thu 19/3

03:26-20:45

1 stop13h 19m

£513

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 18/4

08:15-02:07

1 stop22h 52m

San Juan Luis Munoz Marin Intl

Tue 21/4

18:55-20:45

1 stop20h 50m

£521

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

12:20-01:25

1 stop17h 05m

San Juan Luis Munoz Marin Intl

Thu 19/3

03:26-20:45

1 stop13h 19m

£532

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from Heathrow to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Heathrow 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 Heathrow Airport to Puerto Rico

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £403). Flying from London Heathrow Airport to Puerto Rico in December is currently the most expensive (average of £539). 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 16 January 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Puerto Rico, such as Finnair, JetBlue, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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
1,349 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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
2,887 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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
596 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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
3,087 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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
7,676 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Entertainment

6.9

Comfort

7.4

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 Heathrow 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 Heathrow Airport to Puerto Rico?

    JetBlue can get you from London Heathrow Airport to Puerto Rico in just under 17h 05m. Your travel time can differ by up to . The distance between London Heathrow Airport and Puerto Rico is about 4179 mi.

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

    Most travelers choose London Heathrow - San Juan Luis Munoz Marin Intl, London Heathrow - Aguadilla Borinquen or London Heathrow - Mayagüez Eugenio M De Hostos when deciding on the best route from London Heathrow Airport to Puerto Rico.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Puerto Rico?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £403). Flying from London Heathrow Airport to Puerto Rico in December is currently the most expensive (average of £539). 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

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Alternative routes for Heathrow to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Heathrow to Puerto Rico

Discover the top 6 airlines that operate flights from Heathrow 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 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£344Average£992FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£436Average£549FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£438Average£606FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£500Average£824FlexibilityNo cancel feeOn-time77%
Search Iberia flights
IcelandairCheapest£505Average£653FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£539Average£963FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Heathrow to Puerto Rico flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Puerto Rico.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Puerto Rico flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Heathrow to Puerto Rico and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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