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Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £412

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Luis Munoz Marin Intl

Enter your travel dates to find the best prices.

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 10 June 2026.

Wed 4/1109:20
LHR
-
SJU
1 stop19h 05m
JetBlue
Thu 12/1107:00
SJU
-
LHR
1 stop19h 55m
JetBlue
Deal found 10/6£577
Wed 11/1109:20
LHR
-
SJU
1 stop19h 05m
JetBlue
Tue 24/1105:30
SJU
-
LHR
1 stop12h 10m
JetBlue
Deal found 10/6£590
Mon 21/908:15
LHR
-
SJU
1 stop16h 17m
JetBlue
Wed 30/906:00
SJU
-
LHR
1 stop33h 45m
JetBlue
Deal found 9/6£596
Mon 7/908:40
LHR
-
SJU
1 stop30h 20m
JetBlue
Sun 13/919:35
SJU
-
LHR
1 stop29h 55m
JetBlue
Deal found 10/6£615
Thu 15/1008:15
LHR
-
SJU
1 stop16h 27m
JetBlue
Sun 25/1015:01
SJU
-
LHR
1 stop14h 29m
JetBlue
Deal found 8/6£616
Mon 16/1107:25
LHR
-
SJU
1 stop17h 20m
Multiple Airlines
Mon 23/1110:29
SJU
-
LHR
1 stop16h 21m
Multiple Airlines
Deal found 8/6£621
Tue 1/908:40
LHR
-
SJU
1 stop20h 14m
JetBlue
Mon 14/906:00
SJU
-
LHR
1 stop19h 30m
JetBlue
Deal found 6/6£625
Thu 12/1107:25
LHR
-
SJU
1 stop22h 18m
JetBlue
Thu 19/1113:20
SJU
-
LHR
1 stop16h 10m
JetBlue
Deal found 10/6£626
Fri 4/908:40
LHR
-
SJU
1 stop20h 14m
JetBlue
Sat 19/919:00
SJU
-
LHR
1 stop20h 45m
JetBlue
Deal found 6/6£627
Sat 31/1007:25
LHR
-
SJU
1 stop16h 14m
JetBlue
Wed 11/1116:00
SJU
-
LHR
1 stop13h 30m
JetBlue
Deal found 5/6£629

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 10 June 2026.

Round-trip from

£577

One-way from

£412

Popular in

December

Cheapest in

September

Average price

£861
JetBlue
  • JetBlue
  • 4/11-12/11
  • 2 total stops
  • 39h 00m total
  • London to San Juan
Search Deals
JetBlue
  • JetBlue
  • 24/9
  • 1 total stop
  • 16h 17m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 10 June 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/11

09:20-00:25

1 stop19h 05m

San Juan Luis Munoz Marin Intl

Tue 24/11

05:30-21:40

1 stop12h 10m

£590
Fastest return journey

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 25/11

09:20-19:29

1 stop14h 09m

San Juan Luis Munoz Marin Intl

Fri 4/12

14:41-06:55

1 stop12h 14m

£683

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 4/9

08:15-19:50

1 stop16h 35m

San Juan Luis Munoz Marin Intl

Fri 11/9

10:30-09:30

1 stop18h 00m

£686

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 4/12

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Sat 12/12

07:10-06:55

1 stop19h 45m

£690

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 26/9

08:15-19:32

1 stop16h 17m

San Juan Luis Munoz Marin Intl

Wed 30/9

10:30-09:30

1 stop18h 00m

£704

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 30/8

08:15-19:50

1 stop16h 35m

San Juan Luis Munoz Marin Intl

Fri 11/9

10:30-09:30

1 stop18h 00m

£711

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 19/10

08:15-23:49

1 stop20h 34m

San Juan Luis Munoz Marin Intl

Fri 23/10

06:12-06:30

1 stop19h 18m

£722

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 16/10

12:00-13:08

2 stops30h 08m

San Juan Luis Munoz Marin Intl

Sun 25/10

06:00-17:30

2 stops31h 30m

£727

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 17/10

08:15-19:42

1 stop16h 27m

San Juan Luis Munoz Marin Intl

Thu 22/10

06:12-06:30

1 stop19h 18m

£730

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 5/11

19:55-00:25

2 stops32h 30m

San Juan Luis Munoz Marin Intl

Thu 19/11

15:25-17:30

2 stops22h 05m

£736

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 19 resultsSorted by cheapest first
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 return 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?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport, you should look to book at least 35 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 £567). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £992). 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 for a return flight 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 10 June 2026.
See what other customers who have flown with Virgin Atlantic,JetBlue, andIcelandair from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
JetBlue
7.1
Good
2,980 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Icelandair
7.0
Good
670 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Iberia
7.0
Good
3,232 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,035 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.9

Overall

7.5

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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?

    For as low as £590, JetBlue can have you in San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport in 19h 05m. Airlines will cover a distance of 4179 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport round-trip?

    According to our current data, Virgin Atlantic (£334), JetBlue (£438), and Icelandair (£505) offers the cheapest pricing from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport. You may be able to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport for 51% less than the average price by searching for these airlines.

  • 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 holiday 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 £567). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £992). 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

Travelling 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
Bayamón

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Luis Munoz Marin Intl flights
London City to Luis Munoz Marin Intl flights
Stansted to Luis Munoz Marin Intl flights

Top 6 airlines flying from Heathrow to Luis Munoz Marin Intl

Discover the top 6 airlines 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 858,174 searches. Data last updated 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£334Average£1,127FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£438Average£626FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£505Average£679FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
AviancaCheapest£539Average£597FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£824Average£1,029FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£839Average£1,013FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Luis Munoz Marin Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Luis Munoz Marin Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Luis Munoz Marin Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Luis Munoz Marin Intl from Heathrow.

Can Cheapflights find flights from Heathrow to Luis Munoz Marin Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Luis Munoz Marin Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Luis Munoz Marin Intl become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Luis Munoz Marin Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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