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Luis Munoz Marin Intl

$482+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 76 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 June 12, 2025.

Round-trip from

$688
(JetBlue)

One-way from

$482
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$855
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. 3% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This JetBlue deal was found by Cheapflights users on 6/12. 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 11/412:20 pmLHR - SJU
1 stop16h 17mJetBlue
Wed 11/121:59 amSJU - LHR
1 stop14h 46mJetBlue
Deal found 6/12$688
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Wed 7/168:50 amLHR - SJU
3 stops32h 12mMultiple Airlines
Tue 7/221:21 amSJU - LHR
3 stops31h 04mMultiple Airlines
Deal found 6/11$869
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/12. 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 11/157:10 amSJU - LHR
2 stops24h 15mTAP AIR PORTUGAL
Deal found 6/12$879
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:15 pmLHR - SJU
2 stops19h 02mIcelandair
Thu 11/136:15 amSJU - LHR
2 stops24h 35mIcelandair
Deal found 6/10$990
This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:30 amLHR - SJU
2 stops21h 01mBritish Airways
Thu 11/135:55 amSJU - LHR
1 stop22h 20mBritish Airways
Deal found 6/10$1,028
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:30 amLHR - SJU
2 stops22h 21mDelta
Wed 9/247:30 amSJU - LHR
2 stops18h 45mDelta
Deal found 6/11$1,030
This Iberia deal was found by Cheapflights users on 6/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/97:40 pmLHR - SJU
1 stop28h 15mIberia
Thu 11/134:55 pmSJU - LHR
1 stop15h 10mIberia
Deal found 6/10$1,067
This Finnair deal was found by Cheapflights users on 6/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:15 amLHR - SJU
2 stops38h 40mFinnair
Wed 11/198:14 amSJU - LHR
2 stops22h 11mFinnair
Deal found 6/12$1,132
This Avianca deal was found by Cheapflights users on 6/12. 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.
Wed 11/59:40 pmLHR - SJU
2 stops43h 00mAvianca
Thu 11/132:10 pmSJU - LHR
2 stops44h 25mAvianca
Deal found 6/12$1,192
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 9/29:30 amLHR - SJU
2 stops19h 27mUnited Airlines
Mon 9/81:05 amSJU - LHR
1 stop14h 35mUnited Airlines
Deal found 6/10$1,214

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 June 12, 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 11/4

12:20 pm-12:37 am

1 stop16h 17m

San Juan Luis Munoz Marin Intl

Wed 11/12

1:59 am-8:45 pm

1 stop14h 46m

$688

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 7/16

8:50 am-12:02 pm

3 stops32h 12m

San Juan Luis Munoz Marin Intl

Tue 7/22

1:21 am-1:25 pm

3 stops31h 04m

$869

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

7:10 am-11:25 am

2 stops24h 15m

$879

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 11/6

12:15 pm-3:17 am

2 stops19h 02m

San Juan Luis Munoz Marin Intl

Thu 11/13

6:15 am-10:50 am

2 stops24h 35m

$990

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/4

6:30 am-11:31 pm

2 stops21h 01m

San Juan Luis Munoz Marin Intl

Wed 11/12

5:55 am-11:30 am

1 stop25h 35m

$1,028

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

6:30 am-11:51 pm

2 stops22h 21m

San Juan Luis Munoz Marin Intl

Wed 9/24

7:30 am-7:15 am

2 stops18h 45m

$1,030

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 11/9

7:40 pm-7:55 pm

1 stop28h 15m

San Juan Luis Munoz Marin Intl

Thu 11/13

4:55 pm-12:05 pm

1 stop15h 10m

$1,067

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/4

9:15 am-7:55 pm

2 stops38h 40m

San Juan Luis Munoz Marin Intl

Wed 11/19

8:14 am-10:25 am

2 stops22h 11m

$1,132

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/5

9:40 pm-12:40 pm

2 stops43h 00m

San Juan Luis Munoz Marin Intl

Fri 11/14

2:10 pm-2:35 pm

2 stops20h 25m

$1,192

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/2

9:30 am-11:57 pm

2 stops19h 27m

San Juan Luis Munoz Marin Intl

Mon 9/8

1:05 am-8:40 pm

1 stop14h 35m

$1,214

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 19 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 June 9, 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 76 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.

What is the cheapest time of day to fly from LHR to SJU?

Find hourly flight availability from Heathrow to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport as you normally would.

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, 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 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Delta, Finnair and United Airlines from London to San Juan to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
2,925 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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 $688 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Icelandair, starting at $879 and $990 round-trip. JetBlue is priced at 20% 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 $742. JetBlue flights start at $776 while deals on TAP AIR PORTUGAL start at $824 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Dorado
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Humacao
Bayamón

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$575Average$780FlexibilityNo cancel feeOn-time62%

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