HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$449+ Cheap flights from Heathrow (LHR) to Luis Munoz Marin Intl (SJU)

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London Heathrow to San Juan Luis Munoz Marin Intl are usually found in September or March, booked 43 days in advance, depart on a Tuesday or Friday and return on a Wednesday

Cheap flight deals from Heathrow to Luis Munoz Marin Intl

Cheapest flights from Heathrow to Luis Munoz Marin Intl
Explore the most affordable flight options available from Heathrow to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This JetBlue deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:20 amLHR - SJU
1 stop18h 36mJetBlue
Sat 1/108:00 amSJU - LHR
1 stop18h 55mJetBlue
Deal found 12/17$1,002
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:20 amLHR - SJU
1 stop18h 34mJetBlue
Wed 2/2512:15 pmSJU - LHR
1 stop14h 40mJetBlue
Deal found 12/16$1,060
This JetBlue deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:20 pmLHR - SJU
1 stop14h 14mJetBlue
Wed 12/3111:40 amSJU - LHR
1 stop17h 50mJetBlue
Deal found 12/17$1,106
This Expedia deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:20 pmLHR - SJU
1 stop18h 39mJetBlue
Tue 12/308:55 pmSJU - LHR
1 stop20h 45mJetBlue
Deal found 12/17$1,113
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:20 amLHR - SJU
1 stop18h 36mJetBlue
Sat 1/108:00 amSJU - LHR
1 stop18h 55mJetBlue
Deal found 12/16$1,120
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:20 amLHR - SJU
1 stop18h 36mJetBlue
Wed 12/3110:38 amSJU - LHR
1 stop18h 52mJetBlue
Deal found 12/16$1,158
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:20 amLHR - SJU
1 stop14h 05mJetBlue
Thu 1/85:01 amSJU - LHR
1 stop12h 39mJetBlue
Deal found 12/16$1,194
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:20 pmLHR - SJU
1 stop18h 39mJetBlue
Thu 1/112:40 pmSJU - LHR
1 stop14h 15mJetBlue
Deal found 12/16$1,198
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:20 pmLHR - SJU
1 stop18h 39mJetBlue
Sat 1/107:15 pmSJU - LHR
1 stop31h 40mJetBlue
Deal found 12/16$1,199
This JetBlue deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:20 pmLHR - SJU
1 stop17h 39mJetBlue
Fri 1/92:00 pmSJU - LHR
1 stop12h 55mJetBlue
Deal found 12/17$1,216
This JetBlue deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:20 pmLHR - SJU
1 stop18h 39mJetBlue
Tue 12/301:59 amSJU - LHR
1 stop15h 41mJetBlue
Deal found 12/16$1,220

Find flight deals from Heathrow to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$703
(JetBlue)

One-way from

$449
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,310
Provider with most accurate pricing for London Heathrow-San Juan Luis Munoz Marin Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-San Juan Luis Munoz Marin Intl flights.
Search Deals
From London Heathrow to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from London Heathrow to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Luis Munoz Marin Intl 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 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Heathrow

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 1/13

7:25 am-7:26 pm

1 stop16h 01m

San Juan Luis Munoz Marin Intl

Tue 1/20

2:00 pm-6:55 am

1 stop12h 55m

$788

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 2/19

6:00 am-3:54 am

2 stops25h 54m

San Juan Luis Munoz Marin Intl

Thu 2/26

3:40 pm-5:30 pm

2 stops21h 50m

$873

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 1/29

6:30 am-11:50 pm

2 stops21h 20m

San Juan Luis Munoz Marin Intl

Thu 2/12

8:05 am-7:45 am

2 stops19h 40m

$987

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 1/15

7:50 am-11:56 pm

2 stops20h 06m

San Juan Luis Munoz Marin Intl

Wed 1/21

11:38 am-6:50 am

1 stop15h 12m

$1,088

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 2/4

7:45 am-7:55 pm

2 stops16h 10m

San Juan Luis Munoz Marin Intl

Wed 2/25

4:36 pm-11:30 am

1 stop14h 54m

$1,103

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 12/28

9:20 am-11:56 pm

1 stop18h 36m

San Juan Luis Munoz Marin Intl

Sat 1/10

8:00 am-6:55 am

1 stop18h 55m

$1,120

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 1/14

7:30 am-10:22 pm

2 stops18h 52m

San Juan Luis Munoz Marin Intl

Mon 1/19

10:15 am-7:30 am

1 stop17h 15m

$1,186

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 2/4

8:30 am-10:22 pm

2 stops17h 52m

San Juan Luis Munoz Marin Intl

Wed 2/25

2:10 pm-10:50 am

2 stops16h 40m

$1,196

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 12/27

9:20 am-11:56 pm

1 stop18h 36m

San Juan Luis Munoz Marin Intl

Mon 1/5

12:40 pm-6:55 am

1 stop14h 15m

$1,227

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 1/30

6:30 am-10:22 pm

2 stops19h 52m

San Juan Luis Munoz Marin Intl

Fri 2/6

7:45 am-5:55 am

2 stops18h 10m

$1,266

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 19 results
1
2

Compare providers for flights from Heathrow to Luis Munoz Marin Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Luis Munoz Marin Intl in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Heathrow with our price prediction graph.
Estimated round-trip 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 San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Luis Munoz Marin Intl. Price data was last updated on December 12, 2025.

The price you pay for your flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?

Currently, June is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport (average of $588). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $727). 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.

How much does it cost to fly round-trip from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with JetBlue from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
JetBlue
7.2
Good
2,897 reviews

Crew

8.0

Boarding

7.4

Food

6.7

Overall

7.2

Entertainment

7.2

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Guillermo,Nov 2024

JFK - SJO

Flight canceled, returned to NY and waiting for the new one. Thanks
JetBlue
7.2
Good
2,897 reviews
JetBlue
7.2
Good
2,897 reviews

Crew

8.0

Boarding

7.4

Food

6.7

Overall

7.2

Entertainment

7.2

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Guillermo,Nov 2024

JFK - SJO

Flight canceled, returned to NY and waiting for the new one. Thanks

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Luis Munoz Marin Intl. 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 San Juan Luis Munoz Marin Intl Airport?

    Departing from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport will take you 16h 01m. London Heathrow Airport and San Juan Luis Munoz Marin Intl Airport are separated by a distance of 4179 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport round-trip?

    Our cheapest airline available from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport is JetBlue. Our recent data shows that you can find tickets from as low as $648 on this airline. JetBlue is priced at 25% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Heathrow to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Heathrow to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Heathrow to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Heathrow to Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport?

    Currently, June is the cheapest month in which you can book a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport (average of $588). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $727). 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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Humacao
Luquillo
Bayamón

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.

Top airline flying from Heathrow to Luis Munoz Marin Intl

Discover the top airline that operate flights from Heathrow to Luis Munoz Marin Intl. 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 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$648Average$832FlexibilityNo cancel feeOn-time62%

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.