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Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £373

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
9 Sep — 16 Sep1
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 August 2026.

Thu 29/1007:25 -
1 stop34h 21m
Sat 7/1120:45 -
1 stop30h 10m
Deal found 5/8£590
Thu 10/908:15 -
1 stop16h 19m
Sun 20/906:00 -
1 stop33h 45m
Deal found 8/8£591
Mon 21/908:15 -
1 stop34h 24m
Wed 14/1013:00 -
1 stop26h 45m
Deal found 10/8£593
Fri 18/908:15 -
1 stop16h 19m
Sun 4/1018:55 -
1 stop30h 35m
Deal found 8/8£595
Sat 31/1009:20 -
1 stop18h 05m
Tue 24/1102:05 -
1 stop15h 35m
Deal found 7/8£601
Tue 22/908:15 -
1 stop16h 19m
Tue 29/913:00 -
1 stop15h 30m
Deal found 8/8£602
Sat 3/1008:15 -
1 stop34h 24m
Mon 19/1015:00 -
1 stop13h 30m
Deal found 9/8£602
Fri 9/1008:40 -
1 stop20h 18m
Mon 19/1015:00 -
1 stop13h 30m
Deal found 6/8£607
Wed 11/1107:25 -
1 stop17h 20m
Mon 23/1102:05 -
1 stop15h 35m
Deal found 10/8£608
Fri 11/908:15 -
1 stop16h 19m
Sat 19/906:00 -
1 stop19h 30m
Deal found 9/8£618
Thu 1/1008:15 -
1 stop16h 19m
Wed 28/1006:00 -
1 stop20h 55m
Deal found 7/8£621
Wed 18/1107:25 -
1 stop17h 20m
Mon 30/1121:35 -
1 stop13h 20m
Deal found 9/8£622

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 August 2026.

Round-trip from

£590

One-way from

£373

Popular in

December

Cheapest in

February

Average price

£967
JetBlue
  • JetBlue
  • 29/10-7/11
  • 2 total stops
  • 64h 31m total
  • London to San Juan
Search Deals
28/9
  • 28/9
  • 3 total stops
  • 35h 23m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 August 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 London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 18/11

09:20-00:25

1 stop19h 05m

San Juan Luis Munoz Marin Intl

Mon 23/11

12:19-06:55

1 stop14h 36m

£608

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Thu 7/1

12:15-02:25

2 stops18h 10m

San Juan Luis Munoz Marin Intl

Thu 21/1

14:00-10:50

2 stops16h 50m

£827
Fastest return journey

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Thu 24/9

08:15-19:34

1 stop16h 19m

San Juan Luis Munoz Marin Intl

Thu 1/10

12:57-09:30

1 stop15h 33m

£851

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 7/10

08:00-23:58

2 stops44h 58m

San Juan Luis Munoz Marin Intl

Sun 11/10

06:12-22:00

2 stops34h 48m

£878

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Mon 26/10

13:40-13:03

2 stops27h 23m

San Juan Luis Munoz Marin Intl

Sun 1/11

07:00-21:35

2 stops34h 35m

£885

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Sat 5/9

08:15-20:38

1 stop17h 23m

San Juan Luis Munoz Marin Intl

Tue 15/9

06:00-06:30

1 stop19h 30m

£898

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 11/11

07:30-00:36

2 stops21h 06m

San Juan Luis Munoz Marin Intl

Tue 24/11

17:50-10:50

1 stop13h 00m

£1,002

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Wed 23/9

18:00-11:57

1 stop22h 57m

San Juan Luis Munoz Marin Intl

Wed 30/9

13:25-10:25

1 stop16h 00m

£1,022

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Thu 24/9

13:50-11:57

2 stops27h 07m

San Juan Luis Munoz Marin Intl

Thu 1/10

13:25-10:40

2 stops16h 15m

£1,023
Cheapest one-way
Fastest single journey

LondonSan Juan

LHR London Heathrow - SJU San Juan Luis Munoz Marin Intl

LHRSJU

London Heathrow

Sat 31/10

09:20-23:25

1 stop18h 05m

£389

Flights are sorted by cheapest return flights first.

Deals found on 5/8

Showing 1-10 of 17 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, February 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 £569). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £997). 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?

Airfare is below average for this route at the moment.

London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport flights typically cost between £887 and £1,034 in October.
The cheapest return price found within the last 5 days was £590 on JetBlue (29 Oct–7 Nov).

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 August 2026.
See what other customers who have flown with Virgin Atlantic,JetBlue, andIberia 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
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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
694 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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
3,033 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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
3,264 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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
6.9
Okay
728 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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
8,155 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.5

Crew

8.1

Food

6.9

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 £608, 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. This flight may include one or multiple stops.

  • 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 (£331), JetBlue (£422), and Icelandair (£482) 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 54% 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, February 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 £569). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £997). 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

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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 5 airlines flying from Heathrow to Luis Munoz Marin Intl

Discover the top 5 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 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£331Average£1,136FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£428Average£634FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£491Average£778FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£769Average£1,117FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£840Average£1,017FlexibilityNo 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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