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Luis Munoz Marin Intl

$473+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 February, booked 70 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 July 30, 2025.

Round-trip from

$758
(Trip.com)

One-way from

$473
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,022
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. 5% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/148:15 amLHR - SJU
1 stop35h 41mJetBlue
Sun 9/217:55 pmSJU - LHR
1 stop29h 35mJetBlue
Deal found 7/30$758
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/30. 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.
Thu 11/68:15 amLHR - SJU
2 stops23h 02mTAP AIR PORTUGAL
Sat 11/153:40 pmSJU - LHR
2 stops19h 50mTAP AIR PORTUGAL
Deal found 7/30$804
This Avianca deal was found by Cheapflights users on 7/29. 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.
Sun 10/269:40 pmLHR - SJU
1 stop23h 25mAvianca
Sun 11/26:30 pmSJU - LHR
1 stop16h 05mAvianca
Deal found 7/29$865
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Fri 9/128:40 amLHR - SJU
3 stops34h 31mMultiple Airlines
Fri 9/195:13 pmSJU - LHR
3 stops32h 17mMultiple Airlines
Deal found 7/29$872
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:25 pmLHR - SJU
2 stops44h 26mIcelandair
Fri 9/192:25 pmSJU - LHR
2 stops16h 30mIcelandair
Deal found 7/29$999
This Lufthansa deal was found by Cheapflights users on 7/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:30 amLHR - SJU
2 stops21h 27mLufthansa
Thu 9/181:25 pmSJU - LHR
1 stop12h 50mLufthansa
Deal found 7/29$1,183
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:00 pmLHR - SJU
1 stop15h 57mUnited Airlines
Wed 9/171:05 amSJU - LHR
1 stop14h 35mUnited Airlines
Deal found 7/30$1,207

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 July 30, 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

Sun 9/14

8:15 am-2:56 pm

1 stop35h 41m

San Juan Luis Munoz Marin Intl

Sun 9/21

7:55 pm-6:30 am

1 stop29h 35m

$758

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 11/6

8:15 am-3:17 am

2 stops23h 02m

San Juan Luis Munoz Marin Intl

Sat 11/15

3:40 pm-3:30 pm

2 stops19h 50m

$804

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 10/26

9:40 pm-5:05 pm

1 stop23h 25m

San Juan Luis Munoz Marin Intl

Sun 11/2

6:30 pm-2:35 pm

1 stop16h 05m

$865

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 9/12

8:40 am-2:11 pm

3 stops34h 31m

San Juan Luis Munoz Marin Intl

Fri 9/19

5:13 pm-6:30 am

3 stops32h 17m

$872

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 1/11

12:15 pm-3:55 am

2 stops19h 40m

San Juan Luis Munoz Marin Intl

Sun 1/25

6:15 am-10:50 am

2 stops24h 35m

$992

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 9/3

7:30 am-11:57 pm

2 stops21h 27m

San Juan Luis Munoz Marin Intl

Thu 9/18

1:25 pm-7:15 am

1 stop12h 50m

$1,183

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 9/3

1:00 pm-11:57 pm

1 stop15h 57m

San Juan Luis Munoz Marin Intl

Wed 9/17

1:05 am-8:40 pm

1 stop14h 35m

$1,207

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/12

7:40 pm-9:04 pm

3 stops29h 24m

$473

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 8/28

10:05 pm-4:50 pm

1 stop23h 45m

$704

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 9/8

11:55 am-9:24 pm

1 stop14h 29m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 12 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 July 25, 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 70 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 July 30, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and 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.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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
JetBlue
7.3
Good
2,913 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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
TAP AIR PORTUGAL
7.1
Good
1,930 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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
Icelandair
7.0
Good
519 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Colin,Sep 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 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.

  • What are the cheapest airlines flying 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 $758 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Avianca, starting at $804 and $865 round-trip. JetBlue is priced at 12% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport one-way?

    To fly one-way, consider booking your trip with Avianca, which is currently one of the cheapest options available, starting at $704. JetBlue flights start at $730 while deals on TAP AIR PORTUGAL start at $775 one-way.

  • 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

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$575Average$814FlexibilityNo cancel feeOn-time62%

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