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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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
31 May — 7 Jun1
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 1 May 2026.

Tue 2/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Sat 13/615:34
SJU
-
LHR
1 stop12h 56m
JetBlue
Deal found 29/4£580
Sat 14/1107:25
LHR
-
SJU
1 stop17h 20m
JetBlue
Sat 21/1120:20
SJU
-
LHR
1 stop20h 25m
JetBlue
Deal found 26/4£581
Sat 7/1109:20
LHR
-
SJU
1 stop19h 05m
JetBlue
Wed 18/1116:00
SJU
-
LHR
1 stop13h 30m
JetBlue
Deal found 28/4£582
Wed 3/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Sun 14/613:12
SJU
-
LHR
1 stop15h 18m
JetBlue
Deal found 29/4£585
Thu 4/608:15
LHR
-
SJU
1 stop14h 15m
JetBlue
Wed 10/614:11
SJU
-
LHR
1 stop14h 19m
JetBlue
Deal found 29/4£586
Wed 3/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Mon 15/611:50
SJU
-
LHR
1 stop16h 40m
JetBlue
Deal found 29/4£589
Sun 6/908:15
LHR
-
SJU
1 stop16h 35m
JetBlue
Sat 12/913:00
SJU
-
LHR
1 stop15h 30m
JetBlue
Deal found 29/4£595
Fri 5/608:15
LHR
-
SJU
1 stop14h 31m
JetBlue
Wed 10/614:11
SJU
-
LHR
1 stop14h 19m
JetBlue
Deal found 29/4£601
Thu 3/911:55
LHR
-
SJU
1 stop17h 15m
JetBlue
Sat 12/913:00
SJU
-
LHR
1 stop15h 30m
JetBlue
Deal found 29/4£607
Tue 2/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Sun 14/615:24
SJU
-
LHR
1 stop13h 06m
JetBlue
Deal found 29/4£611
Tue 2/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Mon 15/611:50
SJU
-
LHR
1 stop16h 40m
JetBlue
Deal found 29/4£615
Wed 3/611:55
LHR
-
SJU
1 stop15h 58m
JetBlue
Wed 10/614:11
SJU
-
LHR
1 stop14h 19m
JetBlue
Deal found 29/4£619

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 1 May 2026.

Round-trip from

£580

One-way from

£412

Popular in

December

Cheapest in

September

Average price

£591
JetBlue
  • JetBlue
  • 2/6-13/6
  • 2 total stops
  • 28h 54m total
  • London to San Juan
Search Deals
JetBlue
  • JetBlue
  • 22/5
  • 1 total stop
  • 18h 02m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£61 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 May 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 1 May 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

Sun 20/9

08:15-19:32

1 stop16h 17m

San Juan Luis Munoz Marin Intl

Mon 5/10

06:00-06:30

1 stop19h 30m

£656

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sun 7/6

08:40-21:42

1 stop18h 02m

San Juan Luis Munoz Marin Intl

Wed 10/6

20:06-20:45

1 stop19h 39m

£675

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 14/9

11:20-13:08

2 stops30h 48m

San Juan Luis Munoz Marin Intl

Sun 27/9

06:00-10:20

2 stops23h 20m

£786

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 9/10

12:00-13:08

2 stops30h 08m

San Juan Luis Munoz Marin Intl

Mon 19/10

06:12-17:45

2 stops30h 33m

£803

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/8

11:20-09:50

2 stops27h 30m

San Juan Luis Munoz Marin Intl

Tue 18/8

16:30-22:00

2 stops24h 30m

£862

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 8/6

13:40-23:59

1 stop15h 19m

San Juan Luis Munoz Marin Intl

Tue 16/6

16:28-07:55

2 stops34h 27m

£871

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 16/7

08:00-10:00

2 stops31h 00m

San Juan Luis Munoz Marin Intl

Fri 14/8

10:33-06:55

1 stop15h 22m

£902
Fastest return journey

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 22/8

08:15-19:10

1 stop15h 55m

San Juan Luis Munoz Marin Intl

Mon 31/8

15:10-09:30

1 stop13h 20m

£906

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 10/6

11:20-09:56

2 stops27h 36m

San Juan Luis Munoz Marin Intl

Tue 8/9

16:30-18:50

2 stops21h 20m

£955

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 11/8

08:40-21:32

1 stop17h 52m

San Juan Luis Munoz Marin Intl

Tue 18/8

19:50-20:45

1 stop19h 55m

£966

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 21 resultsSorted by cheapest first
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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 43 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 £556). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £961). 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 1 May 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
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.4
Good
688 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
JetBlue
7.2
Good
2,969 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.0
Good
646 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Iberia
7.0
Good
3,204 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,937 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 £656, JetBlue can have you in San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport in 16h 17m. 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 (£330), JetBlue (£418), and Finnair (£485) 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 49% 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 £556). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £961). 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.
Stansted to Luis Munoz Marin Intl flights
Gatwick to Luis Munoz Marin Intl flights
London City to Luis Munoz Marin Intl flights

Top 7 airlines flying from Heathrow to Luis Munoz Marin Intl

Discover the top 7 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 1 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£330Average£1,029FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£418Average£610FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£485Average£798FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£489Average£653FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
AviancaCheapest£533Average£590FlexibilityNo cancel feeOn-time71%
Search Avianca flights
British AirwaysCheapest£534Average£987FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£579Average£915FlexibilityNo cancel feeOn-time77%
Search Iberia 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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