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Cheap flights from London Heathrow Airport to Puerto Rico from £338

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
26 Mar — 2 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 24 February 2026.

Sun 1/307:45
LHR
-
SJU
1 stop24h 06m
JetBlue
Tue 10/305:15
SJU
-
LHR
1 stop21h 40m
JetBlue
Deal found 21/2£401
Fri 27/212:20
LHR
-
SJU
1 stop16h 09m
JetBlue
Wed 4/305:01
SJU
-
LHR
1 stop12h 39m
JetBlue
Deal found 20/2£450
Sun 15/307:45
LHR
-
SJU
1 stop19h 06m
JetBlue
Tue 31/305:01
SJU
-
LHR
1 stop20h 29m
JetBlue
Deal found 23/2£451
Fri 27/212:20
LHR
-
SJU
1 stop16h 09m
JetBlue
Thu 5/315:05
SJU
-
LHR
1 stop14h 25m
JetBlue
Deal found 20/2£490
Tue 14/408:15
LHR
-
SJU
1 stop15h 15m
JetBlue
Tue 28/417:15
SJU
-
LHR
1 stop22h 30m
JetBlue
Deal found 21/2£503
Tue 17/307:25
LHR
-
SJU
1 stop17h 01m
JetBlue
Thu 19/318:20
SJU
-
LHR
1 stop32h 35m
JetBlue
Deal found 23/2£519
Mon 11/508:15
LHR
-
SJU
1 stop15h 15m
JetBlue
Mon 18/521:59
SJU
-
LHR
1 stop17h 46m
JetBlue
Deal found 20/2£527
Thu 5/312:20
LHR
-
BQN
1 stop18h 32m
JetBlue
Sun 8/301:32
BQN
-
LHR
1 stop15h 13m
JetBlue
Deal found 20/2£594
Mon 23/312:20
LHR
-
BQN
1 stop17h 35m
JetBlue
Thu 9/405:35
BQN
-
LHR
1 stop22h 55m
JetBlue
Deal found 23/2£885
Thu 16/708:15
LHR
-
BQN
1 stop35h 07m
JetBlue
Tue 21/715:17
BQN
-
LHR
1 stop13h 13m
JetBlue
Deal found 22/2£954
Mon 23/318:05
LHR
-
BQN
2 stops35h 50m
Multiple Airlines
Thu 9/405:35
BQN
-
LHR
2 stops36h 05m
Multiple Airlines
Deal found 23/2£1,015
Thu 24/1212:50
LHR
-
BQN
1 stop15h 07m
United Airlines
Mon 11/101:09
BQN
-
LHR
2 stops30h 06m
United Airlines
Deal found 22/2£1,076

Find 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 24 February 2026.

Round-trip from

£450

One-way from

£338

Popular in

July

Cheapest in

September

Average price

£543
JetBlue
  • JetBlue
  • 15/3-31/3
  • 2 total stops
  • 46h 10m total
  • London to Puerto Rico
Search Deals
20/4
  • 20/4
  • 3 total stops
  • 50h 09m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 24 February 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

Mon 11/5

08:15-00:07

1 stop20h 52m

San Juan Luis Munoz Marin Intl

Sat 16/5

21:59-20:45

1 stop17h 46m

£563

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Thu 5/3

12:20-02:52

1 stop18h 32m

Aguadilla Borinquen

Sun 8/3

01:32-20:45

1 stop15h 13m

£594

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 9/4

06:00-22:01

2 stops21h 01m

San Juan Luis Munoz Marin Intl

Tue 14/4

05:30-10:20

2 stops23h 50m

£739

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 2/5

21:25-02:07

2 stops33h 42m

San Juan Luis Munoz Marin Intl

Sat 16/5

12:00-11:55

2 stops18h 55m

£785

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Mon 23/3

12:20-01:55

1 stop17h 35m

Aguadilla Borinquen

Thu 9/4

05:35-09:30

1 stop22h 55m

£885

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

09:30-23:36

2 stops18h 06m

San Juan Luis Munoz Marin Intl

Mon 16/3

07:30-05:55

1 stop18h 25m

£928

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 17/6

08:15-00:10

1 stop20h 55m

San Juan Luis Munoz Marin Intl

Sun 21/6

19:55-20:45

1 stop19h 50m

£931

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 11/5

07:05-23:43

2 stops21h 38m

San Juan Luis Munoz Marin Intl

Sat 23/5

14:20-16:25

3 stops21h 05m

£1,016

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 30/6

12:15-21:59

1 stop14h 44m

San Juan Luis Munoz Marin Intl

Wed 15/7

10:23-06:55

1 stop15h 32m

£1,026

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 17/7

06:00-01:28

2 stops24h 28m

San Juan Luis Munoz Marin Intl

Sat 25/7

06:00-10:20

2 stops23h 20m

£1,026

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 31 results
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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, July is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £393). Flying from London Heathrow Airport to Puerto Rico in December is currently the most expensive (average of £540). 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 24 February 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
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Finnair
7.6
Good
1,369 reviews
Finnair
7.6
Good
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
JetBlue
7.2
Good
2,898 reviews
Finnair
7.6
Good
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Icelandair
7.1
Good
617 reviews
Finnair
7.6
Good
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Iberia
7.0
Good
3,123 reviews
Finnair
7.6
Good
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
British Airways
6.7
Okay
7,762 reviews
Finnair
7.6
Good
1,369 reviews
Check prices

Comfort

7.4

Entertainment

6.9

Overall

7.6

Boarding

7.7

Crew

8.2

Food

6.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

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, TAP AIR PORTUGAL, and Icelandair can get you from London Heathrow Airport to Puerto Rico in just under 20h 52m. Your travel time can differ by up to 12h 50m. The distance between London Heathrow Airport and 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 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, July is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £393). Flying from London Heathrow Airport to Puerto Rico in December is currently the most expensive (average of £540). 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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Heathrow to Montego Bay flights
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Heathrow to Port of Spain flights
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Heathrow to Kingstown flights
Gatwick to Luis Munoz Marin Intl flights
Heathrow to Simpson Bay flights
Heathrow to Castries flights
Heathrow to George Town flights
London City to Castries flights
Heathrow to Santo Domingo flights
Gatwick to Havana flights
Heathrow to Roseau flights
Gatwick to Santo Domingo flights
Heathrow to Santiago de los Caballeros flights
Gatwick to Port of Spain flights
Gatwick to Nassau flights
Stansted to Luis Munoz Marin Intl flights
Heathrow to Oranjestad flights
Heathrow to Basseterre flights
Stansted to Santo Domingo flights
Gatwick to Basseterre flights
Gatwick to Simpson Bay flights

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 24 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£342Average£1,031FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£405Average£605FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£428Average£587FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£501Average£646FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£535Average£962FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£556Average£887FlexibilityNo cancel feeOn-time77%
Search Iberia 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 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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