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Luis Munoz Marin Intl

$519+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to San Juan Luis Munoz Marin Intl are usually found in September or January, booked 11 days in advance, depart on a Tuesday or Friday and return on a Wednesday

Cheap 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 September 15, 2025.

Round-trip from

$690
(JetBlue)

One-way from

$519
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$738
From London Heathrow to San Juan Luis Munoz Marin Intl
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One-way flight from London Heathrow to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 6% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This JetBlue deal was found by Cheapflights users on 9/14. 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 12/312:20 pmLHR - SJU
1 stop19h 28mJetBlue
Tue 12/91:41 pmSJU - LHR
1 stop13h 14mJetBlue
Deal found 9/14$690
This Avianca deal was found by Cheapflights users on 9/15. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:05 pmLHR - SJU
1 stop23h 45mAvianca
Mon 10/206:15 pmSJU - LHR
1 stop16h 20mAvianca
Deal found 9/15$703
This JetBlue deal was found by Cheapflights users on 9/14. 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 12/27:25 amLHR - SJU
1 stop18h 29mJetBlue
Tue 12/91:41 pmSJU - LHR
1 stop13h 14mJetBlue
Deal found 9/14$705
This JetBlue deal was found by Cheapflights users on 9/14. 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 12/412:20 pmLHR - SJU
1 stop19h 28mJetBlue
Thu 12/111:41 pmSJU - LHR
1 stop13h 14mJetBlue
Deal found 9/14$731
This JetBlue deal was found by Cheapflights users on 9/14. 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.
Fri 12/59:20 amLHR - SJU
1 stop18h 34mJetBlue
Sat 12/135:10 amSJU - LHR
1 stop12h 50mJetBlue
Deal found 9/14$736
This JetBlue deal was found by Cheapflights users on 9/14. 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.
Mon 12/18:05 amLHR - SJU
1 stop13h 55mJetBlue
Tue 12/95:15 amSJU - LHR
1 stop12h 25mJetBlue
Deal found 9/14$750
This JetBlue deal was found by Cheapflights users on 9/14. 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.
Sat 12/612:20 pmLHR - SJU
1 stop19h 28mJetBlue
Sat 12/135:10 amSJU - LHR
1 stop12h 50mJetBlue
Deal found 9/14$751
This Expedia deal was found by Cheapflights users on 9/14. 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.
Mon 12/159:20 amLHR - SJU
1 stop19h 02mJetBlue
Thu 1/156:15 amSJU - LHR
1 stop20h 40mJetBlue
Deal found 9/14$792
This Priceline deal was found by Cheapflights users on 9/13. 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.
Wed 11/269:40 pmLHR - SJU
1 stop17h 55mAvianca
Sun 11/306:30 pmSJU - LHR
1 stop16h 05mAvianca
Deal found 9/13$803
This JetBlue deal was found by Cheapflights users on 9/14. 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.
Mon 12/89:20 amLHR - SJU
1 stop18h 34mJetBlue
Mon 12/151:41 pmSJU - LHR
1 stop13h 14mJetBlue
Deal found 9/14$808
This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:05 pmLHR - SJU
3 stops30h 07mMultiple Airlines
Mon 11/33:48 amSJU - LHR
3 stops35h 27mMultiple Airlines
Deal found 9/13$822
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/14. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:40 pmLHR - SJU
2 stops25h 09mTAP AIR PORTUGAL
Sat 11/224:04 pmSJU - LHR
2 stops19h 26mTAP AIR PORTUGAL
Deal found 9/14$842

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 September 15, 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

Mon 2/2

12:20 pm-2:33 am

1 stop18h 13m

San Juan Luis Munoz Marin Intl

Wed 2/11

1:59 am-8:45 pm

1 stop14h 46m

$690

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 12/9

12:20 pm-3:48 am

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Tue 12/16

1:41 pm-6:55 am

1 stop13h 14m

$705

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 2/7

8:05 am-11:55 pm

1 stop19h 50m

San Juan Luis Munoz Marin Intl

Wed 2/11

1:59 am-8:45 pm

1 stop14h 46m

$731

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 12/5

9:20 am-11:54 pm

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Thu 12/11

1:41 pm-6:55 am

1 stop13h 14m

$731

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/4

12:20 pm-3:48 am

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Wed 12/10

1:41 pm-6:55 am

1 stop13h 14m

$731

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 2/7

8:05 am-11:55 pm

1 stop19h 50m

San Juan Luis Munoz Marin Intl

Sat 2/14

1:59 am-8:45 pm

1 stop14h 46m

$736

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 1/7

9:20 am-11:56 pm

1 stop18h 36m

San Juan Luis Munoz Marin Intl

Tue 1/13

11:15 am-9:30 am

1 stop18h 15m

$750

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 12/6

12:20 pm-3:48 am

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Sat 12/13

5:10 am-10:00 pm

1 stop12h 50m

$751

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 12/15

9:20 am-12:22 am

1 stop19h 02m

San Juan Luis Munoz Marin Intl

Thu 1/15

6:15 am-6:55 am

1 stop20h 40m

$792

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 12/8

9:20 am-11:54 pm

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Mon 12/15

1:41 pm-6:55 am

1 stop13h 14m

$808

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 results
1
2

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 September 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 11 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, September 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 $254). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 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 September 15, 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
2,912 reviews

Food

6.7

Overall

7.2

Comfort

7.6

Boarding

7.4

Entertainment

7.3

Crew

8.0

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
2,912 reviews
JetBlue
7.2
Good
2,912 reviews

Food

6.7

Overall

7.2

Comfort

7.6

Boarding

7.4

Entertainment

7.3

Crew

8.0

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 18h 13m. London Heathrow Airport and San Juan Luis Munoz Marin Intl Airport are separated by a distance of 4179 mi.

  • 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 $575 on this airline. JetBlue is priced at 32% 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, September 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 $254). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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
Luquillo
Humacao

Browse thousands of different options on Cheapflights for your next trip

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$575Average$832FlexibilityNo cancel feeOn-time62%

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