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Cheap flights from London Heathrow Airport to Puerto Rico from £344

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 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
27 Aug — 3 Sep1
1 adult

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 22 August 2025.

Round-trip from

£493

One-way from

£344

Popular in

July

Cheapest in

September

Average price

£772
Icelandair
  • Icelandair
  • 9/9-21/9
  • 2 total stops
  • 48h 52m total
  • London to Puerto Rico
Search Deals
16/10
  • 16/10
  • 2 total stops
  • 22h 01m total
  • London to Puerto Rico
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£77 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Heathrow to Puerto Rico

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 22 August 2025.

Tue 9/908:15LHR - SJU
1 stop19h 17mIcelandair
Sun 21/919:55SJU - LHR
1 stop29h 35mIcelandair
Deal found 21/8£493
Tue 9/908:25LHR - SJU
2 stops19h 07mIcelandair
Wed 24/913:25SJU - LHR
1 stop15h 05mIcelandair
Deal found 20/8£498
Tue 9/908:15LHR - SJU
1 stop19h 17mJetBlue
Wed 24/913:25SJU - LHR
1 stop15h 05mJetBlue
Deal found 21/8£499
Wed 26/1112:20LHR - SJU
1 stop19h 28mJetBlue
Wed 10/1208:00SJU - LHR
1 stop21h 30mJetBlue
Deal found 20/8£500
Wed 3/908:15LHR - SJU
1 stop18h 09mIcelandair
Thu 18/913:00SJU - LHR
1 stop12h 30mIcelandair
Deal found 20/8£503
Tue 7/1011:55LHR - SJU
1 stop14h 29mJetBlue
Thu 16/1013:00SJU - LHR
1 stop12h 30mJetBlue
Deal found 21/8£510
Thu 2/1011:55LHR - SJU
1 stop14h 29mJetBlue
Thu 9/1006:00SJU - LHR
1 stop22h 30mJetBlue
Deal found 19/8£513
Tue 9/908:15LHR - SJU
1 stop19h 17mJetBlue
Sun 21/913:00SJU - LHR
1 stop12h 30mJetBlue
Deal found 20/8£514
Tue 16/908:15LHR - SJU
1 stop13h 40mJetBlue
Tue 23/913:25SJU - LHR
1 stop15h 05mJetBlue
Deal found 21/8£517
Wed 17/908:15LHR - SJU
1 stop18h 09mJetBlue
Tue 23/918:05SJU - LHR
1 stop21h 40mJetBlue
Deal found 21/8£518
Sat 4/1008:15LHR - BQN
1 stop23h 16mJetBlue
Sat 18/1005:01BQN - LHR
1 stop34h 44mJetBlue
Deal found 21/8£578
Mon 6/1012:40LHR - BQN
2 stops39h 29mAir Canada
Fri 17/1000:15BQN - LHR
2 stops25h 15mAir Canada
Deal found 21/8£945

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 22 August 2025.
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

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

06:00-09:30

1 stop22h 30m

£493

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Sun 21/9

19:55-06:30

1 stop29h 35m

£493

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 1/2

07:25-10:16

1 stop30h 51m

San Juan Luis Munoz Marin Intl

Wed 11/2

11:15-09:30

1 stop18h 15m

£496

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

08:15-22:32

1 stop19h 17m

San Juan Luis Munoz Marin Intl

Wed 24/9

13:25-09:30

1 stop15h 05m

£499

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 26/11

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Wed 10/12

08:00-09:30

1 stop21h 30m

£500

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Thu 18/9

13:00-06:30

1 stop12h 30m

£503

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 8/10

08:15-21:24

1 stop18h 09m

San Juan Luis Munoz Marin Intl

Tue 14/10

14:05-09:30

1 stop14h 25m

£510

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 7/10

11:55-21:24

1 stop14h 29m

San Juan Luis Munoz Marin Intl

Mon 13/10

03:03-20:45

1 stop12h 42m

£510

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Sat 4/10

08:15-02:31

1 stop23h 16m

Aguadilla Borinquen

Sat 18/10

05:01-20:45

1 stop34h 44m

£578

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Mon 6/10

12:40-23:09

2 stops39h 29m

Aguadilla Borinquen

Fri 17/10

00:15-06:30

2 stops25h 15m

£945

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 23 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, April is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £631). Flying from London Heathrow Airport 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 LHR to PR?

Find hourly flight availability from Heathrow 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 22 August 2025.

When flying from London Heathrow Airport 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.

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 22 August 2025.
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
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Finnair
7.6
Good
1,320 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
JetBlue
7.2
Good
2,916 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Icelandair
7.0
Good
529 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Iberia
7.0
Good
2,884 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
British Airways
6.7
Okay
7,292 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

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?

    Icelandair, JetBlue, and Air Canada can get you from London Heathrow Airport to Puerto Rico in just under 19h 17m. Your travel time can differ by up to 20h 12m. 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, April is the cheapest month in which you can book a flight from London Heathrow Airport to Puerto Rico (average of £631). Flying from London Heathrow Airport 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

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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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Gatwick to Road Town flights
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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 22 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£343Average£1,122FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£454Average£596FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£454Average£562FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£456Average£581FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£510Average£734FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£556Average£706FlexibilityNo 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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