Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Puerto Rico from £325

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
21 Apr — 28 Apr1
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 16 April 2025.

Round-trip from

£483

One-way from

£325

Popular in

July

Cheapest in

September

Average price

£703
Icelandair
  • Icelandair
  • 22/9-28/9
  • 2 total stops
  • 30h 33m total
  • London to Puerto Rico
10/6
  • 10/6
  • 2 total stops
  • 47h 27m total
  • London to Puerto Rico
Highest demand for flights based on searches. 15% potential increase in price (£93 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Average for round-trip flights in April 2025

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 16 April 2025.

Mon 22/908:15LHR - SJU
1 stop18h 03mIcelandair
Sun 28/903:15SJU - LHR
1 stop12h 30mIcelandair
Deal found 15/4£483
Tue 23/908:15LHR - SJU
1 stop18h 03mJetBlue
Mon 29/903:15SJU - LHR
1 stop12h 30mJetBlue
Deal found 15/4£508
Thu 15/509:15LHR - SJU
1 stop14h 35mIberia
Thu 22/513:30SJU - LHR
1 stop14h 55mIberia
Deal found 15/4£534
Fri 30/516:50LHR - SJU
1 stop27h 39mMultiple Airlines
Fri 6/621:30SJU - LHR
1 stop28h 45mMultiple Airlines
Deal found 15/4£583
Fri 30/511:55LHR - BQN
1 stop19h 06mJetBlue
Fri 6/609:46BQN - LHR
1 stop18h 44mJetBlue
Deal found 15/4£676
Thu 6/1112:25LHR - SJU
2 stops19h 55mTAP AIR PORTUGAL
Sat 15/1106:15SJU - LHR
2 stops25h 10mTAP AIR PORTUGAL
Deal found 15/4£678
Mon 28/414:10LHR - SJU
2 stops30h 30mUnited Airlines
Thu 22/501:05SJU - LHR
1 stop14h 35mUnited Airlines
Deal found 15/4£688
Fri 19/907:30LHR - SJU
2 stops21h 27mLufthansa
Sun 28/913:30SJU - LHR
1 stop12h 45mLufthansa
Deal found 15/4£826
Wed 24/911:30LHR - SJU
1 stop12h 00mAmerican Airlines
Tue 30/911:55SJU - LHR
2 stops16h 35mAmerican Airlines
Deal found 15/4£828
Fri 25/414:05LHR - SJU
2 stops28h 45mAir Canada
Wed 21/501:05SJU - LHR
2 stops24h 30mAir Canada
Deal found 15/4£853
Fri 30/517:40LHR - BQN
2 stops34h 29mUnited Airlines
Thu 5/600:15BQN - LHR
2 stops25h 05mUnited Airlines
Deal found 15/4£965
Fri 30/513:00LHR - BQN
1 stop15h 09mMultiple Airlines
Thu 5/600:15BQN - LHR
1 stop15h 25mMultiple Airlines
Deal found 15/4£1,046

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 April 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

Mon 22/9

08:15-21:18

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Sun 28/9

03:15-20:45

1 stop12h 30m

£483

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 23/9

08:15-21:18

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Mon 29/9

03:15-20:45

1 stop12h 30m

£508

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 15/5

09:15-18:50

1 stop14h 35m

San Juan Luis Munoz Marin Intl

Thu 22/5

13:30-09:25

1 stop14h 55m

£534

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 30/5

16:50-15:29

1 stop27h 39m

San Juan Luis Munoz Marin Intl

Fri 6/6

21:30-07:15

1 stop28h 45m

£583

LondonAguadilla

LHR - BQN

LHRBQN

London Heathrow

Fri 30/5

11:55-02:01

1 stop19h 06m

Aguadilla Borinquen

Fri 6/6

09:46-09:30

1 stop18h 44m

£676

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 28/4

14:10-15:40

2 stops30h 30m

San Juan Luis Munoz Marin Intl

Thu 22/5

01:05-20:40

1 stop14h 35m

£688

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 6/5

11:20-09:14

2 stops26h 54m

San Juan Luis Munoz Marin Intl

Tue 13/5

13:58-18:50

2 stops23h 52m

£728

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 19/9

07:30-23:57

2 stops21h 27m

San Juan Luis Munoz Marin Intl

Sun 28/9

13:30-07:15

1 stop12h 45m

£826

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 24/9

11:30-18:30

1 stop12h 00m

San Juan Luis Munoz Marin Intl

Tue 30/9

11:55-09:30

2 stops16h 35m

£828

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 26/4

09:30-11:57

2 stops31h 27m

San Juan Luis Munoz Marin Intl

Wed 21/5

01:05-06:35

2 stops24h 30m

£856

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 19 results
1
2

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 16 April 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.

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 16 April 2025.
To help decide which airline to fly from London to Puerto Rico, see what other customers have to say about Delta, United Airlines and Virgin Atlantic. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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
8.0
Very Good

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

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

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as £494. However, be on the lookout for offers from Avianca and JetBlue, as they are both options that can get you from London Heathrow Airport to Puerto Rico for a low price.

  • What are the most popular routes 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

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 Heathrow to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.

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 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£426Average£561FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£445Average£658FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£455Average£571FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£510Average£685FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£569Average£735FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£857Average£1,145FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.