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Luis Munoz Marin Intl

$376+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 April, 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$667
(JetBlue)

One-way from

$376
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$760
Provider with most accurate pricing for London Heathrow-San Juan Luis Munoz Marin Intl flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-San Juan Luis Munoz Marin Intl flights.
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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. 17% potential increase in price ($179 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This JetBlue deal was found by Cheapflights users on 3/24. 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 11/38:25 amLHR - SJU
1 stop18h 35mJetBlue
Tue 11/111:59 amSJU - LHR
1 stop14h 46mJetBlue
Deal found 3/24$659
This oojo deal was found by Cheapflights users on 3/23. 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.
Wed 5/1410:50 amLHR - SJU
1 stop13h 00mIberia
Thu 5/221:30 pmSJU - LHR
1 stop14h 55mIberia
Deal found 3/23$670
This oojo deal was found by Cheapflights users on 3/23. 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 5/161:40 pmLHR - SJU
1 stop26h 19mBritish Airways
Mon 5/195:25 amSJU - LHR
1 stop22h 35mBritish Airways
Deal found 3/23$752
This Mytrip deal was found by Cheapflights users on 3/23. 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 5/166:00 amLHR - SJU
3 stops34h 29mMultiple Airlines
Sun 5/181:59 amSJU - LHR
2 stops22h 56mMultiple Airlines
Deal found 3/23$771
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/24. 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 11/612:25 pmLHR - SJU
2 stops19h 55mTAP AIR PORTUGAL
Sat 11/156:15 amSJU - LHR
2 stops25h 10mTAP AIR PORTUGAL
Deal found 3/24$867
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Fri 5/162:10 pmLHR - SJU
2 stops35h 28mUnited Airlines
Mon 5/197:45 amSJU - LHR
2 stops20h 35mUnited Airlines
Deal found 3/23$894
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Tue 11/2512:15 pmLHR - SJU
2 stops19h 02mIcelandair
Wed 12/37:20 amSJU - LHR
2 stops32h 10mIcelandair
Deal found 3/24$970
This Lufthansa deal was found by Cheapflights users on 3/24. 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.
Thu 4/247:30 amLHR - SJU
2 stops21h 27mLufthansa
Wed 5/77:00 amSJU - LHR
1 stop19h 40mLufthansa
Deal found 3/24$1,080
This Delta deal was found by Cheapflights users on 3/23. 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.
Fri 5/169:20 amLHR - SJU
1 stop15h 28mDelta
Mon 5/1912:50 pmSJU - LHR
2 stops17h 35mDelta
Deal found 3/23$1,167
This Avianca deal was found by Cheapflights users on 3/23. 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 3/249:40 pmLHR - SJU
1 stop23h 00mAvianca
Mon 3/316:15 pmSJU - LHR
1 stop16h 20mAvianca
Deal found 3/23$1,282

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 March 25, 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

Wed 5/7

8:25 am-11:57 pm

1 stop20h 32m

San Juan Luis Munoz Marin Intl

Tue 5/13

3:33 am-8:45 pm

1 stop12h 12m

$667

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 5/14

10:50 am-6:50 pm

1 stop13h 00m

San Juan Luis Munoz Marin Intl

Thu 5/22

1:30 pm-9:25 am

1 stop14h 55m

$670

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/16

1:40 pm-10:59 am

1 stop26h 19m

San Juan Luis Munoz Marin Intl

Mon 5/19

5:25 am-9:00 am

1 stop22h 35m

$752

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/16

6:00 am-11:29 am

3 stops34h 29m

San Juan Luis Munoz Marin Intl

Sun 5/18

1:59 am-5:55 am

2 stops22h 56m

$771

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/16

2:10 pm-8:38 pm

2 stops35h 28m

San Juan Luis Munoz Marin Intl

Mon 5/19

7:25 am-6:55 am

1 stop18h 30m

$894

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 4/24

7:30 am-11:57 pm

2 stops21h 27m

San Juan Luis Munoz Marin Intl

Wed 5/7

7:00 am-7:40 am

1 stop19h 40m

$1,080

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/16

9:20 am-7:48 pm

1 stop15h 28m

San Juan Luis Munoz Marin Intl

Mon 5/19

12:50 pm-11:25 am

2 stops17h 35m

$1,167

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 4/3

10:55 am-11:29 pm

1 stop17h 34m

San Juan Luis Munoz Marin Intl

Wed 6/4

1:12 pm-8:50 am

1 stop14h 38m

$1,317

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 4/6

6:00 am-2:44 am

2 stops25h 44m

San Juan Luis Munoz Marin Intl

Thu 12/4

2:05 pm-5:30 pm

2 stops23h 25m

$1,523

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/16

9:30 am-11:57 pm

2 stops19h 27m

San Juan Luis Munoz Marin Intl

Sun 5/18

1:05 am-10:00 am

2 stops27h 55m

$1,539

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 18 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 March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 21, 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 December is currently the most expensive (average of $336). 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 March 25, 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 March 25, 2025.
Peruse reviews from past customers who have flown with Delta, KLM 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
7,890 reviews

Comfort

8.0

Boarding

8.2

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
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Comfort

8.0

Boarding

8.2

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
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Comfort

8.0

Boarding

8.2

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
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Comfort

8.0

Boarding

8.2

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
Virgin Atlantic
7.4
Good
634 reviews
Delta
8.0
Very good
7,890 reviews

Comfort

8.0

Boarding

8.2

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
2,924 reviews
Delta
8.0
Very good
7,890 reviews

Comfort

8.0

Boarding

8.2

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 $667 on this airline. Additional options worth looking into are Iberia and British Airways, starting at $670 and $752 round-trip. JetBlue is priced at 21% 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 Iberia, which is currently one of the cheapest options available, starting at $666. JetBlue flights start at $743 while deals on Avianca start at $747 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 December is currently the most expensive (average of $336). 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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Rio Grande
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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$642Average$909FlexibilityNo cancel feeOn-time62%
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