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Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £247

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

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 14 January 2026.

Round-trip from

£407

One-way from

£247

Popular in

December

Cheapest in

September

Average price

£600
JetBlue
  • JetBlue
  • 11/2-17/2
  • 2 total stops
  • 32h 27m total
  • London to San Juan
Search Deals
JetBlue
  • JetBlue
  • 11/3
  • 1 total stop
  • 18h 06m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find 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 14 January 2026.

Wed 11/209:20
LHR
-
SJU
1 stop20h 02m
JetBlue
Tue 17/205:15
SJU
-
LHR
1 stop12h 25m
JetBlue
Deal found 13/1£407
Sun 22/207:45
LHR
-
SJU
1 stop20h 13m
JetBlue
Sat 28/205:10
SJU
-
LHR
1 stop12h 50m
JetBlue
Deal found 13/1£415
Sun 22/207:45
LHR
-
SJU
1 stop20h 13m
JetBlue
Fri 27/223:59
SJU
-
LHR
1 stop18h 01m
JetBlue
Deal found 13/1£432
Fri 20/212:20
LHR
-
SJU
1 stop15h 39m
JetBlue
Sat 28/205:10
SJU
-
LHR
1 stop12h 50m
JetBlue
Deal found 13/1£438
Fri 6/308:05
LHR
-
SJU
1 stop19h 39m
JetBlue
Sat 14/303:26
SJU
-
LHR
1 stop26h 04m
JetBlue
Deal found 13/1£447
Mon 9/312:20
LHR
-
SJU
1 stop14h 24m
JetBlue
Thu 19/305:01
SJU
-
LHR
1 stop12h 39m
JetBlue
Deal found 14/1£453
Fri 20/212:20
LHR
-
SJU
1 stop15h 39m
JetBlue
Fri 27/223:59
SJU
-
LHR
1 stop18h 01m
JetBlue
Deal found 13/1£456
Thu 5/209:20
LHR
-
SJU
1 stop18h 28m
JetBlue
Wed 11/214:20
SJU
-
LHR
1 stop27h 20m
JetBlue
Deal found 13/1£458
Thu 19/209:20
LHR
-
SJU
1 stop17h 33m
JetBlue
Sat 28/205:10
SJU
-
LHR
1 stop12h 50m
JetBlue
Deal found 13/1£461
Fri 13/312:20
LHR
-
SJU
1 stop17h 05m
JetBlue
Thu 19/305:01
SJU
-
LHR
1 stop12h 39m
JetBlue
Deal found 14/1£470
Wed 18/312:20
LHR
-
SJU
1 stop14h 31m
JetBlue
Sat 28/305:10
SJU
-
LHR
1 stop19h 45m
JetBlue
Deal found 12/1£476
Fri 20/212:20
LHR
-
SJU
1 stop15h 39m
JetBlue
Mon 2/323:59
SJU
-
LHR
1 stop17h 41m
JetBlue
Deal found 13/1£478

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 14 January 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

Heathrow

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 10/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sun 15/3

03:26-20:45

1 stop13h 19m

£438

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 9/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sun 15/3

03:26-20:45

1 stop13h 19m

£438

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/3

09:20-00:55

1 stop19h 35m

San Juan Luis Munoz Marin Intl

Wed 18/3

03:26-21:40

1 stop14h 14m

£453

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 11/3

12:20-22:44

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Thu 19/3

05:01-21:40

1 stop12h 39m

£453

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 24/2

07:25-00:29

1 stop21h 04m

San Juan Luis Munoz Marin Intl

Thu 19/3

03:26-20:45

1 stop13h 19m

£511

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/3

12:20-01:25

1 stop17h 05m

San Juan Luis Munoz Marin Intl

Thu 19/3

03:26-20:45

1 stop13h 19m

£530

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 12/2

09:20-01:50

1 stop20h 30m

San Juan Luis Munoz Marin Intl

Wed 18/2

05:15-21:40

1 stop12h 25m

£537

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 14/4

08:40-02:39

1 stop22h 59m

San Juan Luis Munoz Marin Intl

Fri 24/4

23:59-20:45

1 stop15h 46m

£557

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 7/4

22:05-16:50

1 stop23h 45m

San Juan Luis Munoz Marin Intl

Mon 20/4

18:15-15:35

1 stop16h 20m

£582

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 15/6

11:55-22:50

1 stop15h 55m

San Juan Luis Munoz Marin Intl

Sun 21/6

21:25-20:45

1 stop18h 20m

£592

Flights are sorted by cheapest return flights first.

Deals found on 13/1

Showing 1-10 of 21 results
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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?

Use this chart to determine the optimal time to book a return flight from Heathrow to Luis Munoz Marin Intl. Price data was last updated on 9 January 2026.

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 47 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 £401). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £537). 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.

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 14 January 2026.
See what other customers who have flown with Finnair, 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.
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Finnair
7.6
Good
1,349 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
JetBlue
7.2
Good
2,884 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Icelandair
7.1
Good
596 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
Iberia
7.0
Good
3,086 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.
British Airways
6.7
Okay
7,672 reviews
Finnair
7.6
Good
1,349 reviews
Check prices

Boarding

7.7

Food

6.7

Entertainment

6.9

Overall

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
10.0
Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

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 £438, JetBlue can have you in San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport in 14h 24m. 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 (£343), Finnair (£434), and JetBlue (£436) 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 47% 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 £401). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £537). 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 14 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£343Average£988FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£434Average£547FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£434Average£603FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£498Average£818FlexibilityNo cancel feeOn-time77%
Search Iberia flights
IcelandairCheapest£503Average£651FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£537Average£956FlexibilityNo 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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