Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £310

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London Heathrow to San Juan Luis Munoz Marin Intl are usually found in September or January, booked 11 days in advance, depart on a Monday or Wednesday and return on a Tuesday

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 15 September 2025.

Round-trip from

£490

One-way from

£310

Popular in

December

Cheapest in

September

Average price

£544
Iberia
  • Iberia
  • 3/2-9/2
  • 2 total stops
  • 27h 05m total
  • London to San Juan
JetBlue
  • JetBlue
  • 7/11
  • 1 total stop
  • 23h 43m total
  • London to San Juan
Highest demand for flights based on searches. 6% potential increase in price (£31 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Average for round-trip flights in September 2025

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 15 September 2025.

Wed 3/1212:20LHR - SJU
1 stop19h 28mJetBlue
Tue 9/1213:41SJU - LHR
1 stop13h 14mJetBlue
Deal found 14/9£509
Mon 13/1022:05LHR - SJU
1 stop23h 45mAvianca
Mon 20/1018:15SJU - LHR
1 stop16h 20mAvianca
Deal found 15/9£518
Tue 2/1207:25LHR - SJU
1 stop18h 29mJetBlue
Wed 10/1213:41SJU - LHR
1 stop13h 14mJetBlue
Deal found 14/9£520
Mon 1/1208:05LHR - SJU
1 stop20h 50mJetBlue
Mon 8/1219:48SJU - LHR
1 stop21h 52mJetBlue
Deal found 14/9£520
Mon 1/1208:05LHR - SJU
2 stops21h 49mIcelandair
Mon 8/1206:10SJU - LHR
1 stop20h 45mIcelandair
Deal found 14/9£534
Thu 4/1212:20LHR - SJU
1 stop19h 28mJetBlue
Wed 10/1213:41SJU - LHR
1 stop13h 14mJetBlue
Deal found 14/9£539
Thu 6/1121:40LHR - SJU
1 stop23h 25mAvianca
Sat 15/1113:00SJU - LHR
1 stop21h 35mAvianca
Deal found 14/9£543
Wed 29/1012:15LHR - SJU
2 stops18h 48mMultiple Airlines
Wed 5/1109:00SJU - LHR
2 stops21h 50mMultiple Airlines
Deal found 14/9£546
Mon 20/1008:15LHR - SJU
1 stop13h 27mJetBlue
Tue 2/1215:46SJU - LHR
1 stop13h 44mJetBlue
Deal found 15/9£548
Fri 24/1008:25LHR - SJU
1 stop33h 24mJetBlue
Wed 29/1012:51SJU - LHR
1 stop14h 04mJetBlue
Deal found 15/9£549
Mon 1/1208:05LHR - SJU
1 stop13h 55mJetBlue
Tue 9/1205:15SJU - LHR
1 stop12h 25mJetBlue
Deal found 14/9£553
Sat 8/1112:50LHR - SJU
1 stop15h 46mUnited Airlines
Wed 12/1102:05SJU - LHR
1 stop15h 15mUnited Airlines
Deal found 15/9£554

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 15 September 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 3/12

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Tue 9/12

13:41-06:55

1 stop13h 14m

£509

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/12

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Thu 11/12

13:41-06:55

1 stop13h 14m

£509

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 27/10

08:05-02:48

1 stop22h 43m

San Juan Luis Munoz Marin Intl

Mon 10/11

09:30-09:30

1 stop20h 00m

£518

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/12

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Tue 16/12

13:41-06:55

1 stop13h 14m

£520

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 10/12

09:20-23:54

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Tue 16/12

13:41-06:55

1 stop13h 14m

£520

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 5/2

09:20-23:56

1 stop18h 36m

San Juan Luis Munoz Marin Intl

Tue 17/2

16:10-09:30

1 stop13h 20m

£538

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 7/2

08:05-19:13

1 stop15h 08m

San Juan Luis Munoz Marin Intl

Sun 15/2

01:59-20:45

1 stop14h 46m

£538

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 5/12

09:20-23:54

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Thu 11/12

13:41-06:55

1 stop13h 14m

£539

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 4/12

12:20-03:48

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Wed 10/12

13:41-06:55

1 stop13h 14m

£539

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 7/2

08:05-23:55

1 stop19h 50m

San Juan Luis Munoz Marin Intl

Sat 14/2

01:59-20:45

1 stop14h 46m

£543

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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 12 September 2025.

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 11 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, April 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 £631). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £1,027). 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 15 September 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the evening.

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 15 September 2025.
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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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.

Entertainment

6.9

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

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 £509, JetBlue can have you in San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport in 19h 28m. 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 (£340), JetBlue (£439), and Icelandair (£445) 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 46% 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, April 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 £631). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £1,027). 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

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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.

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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£340Average£1,112FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£439Average£586FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£445Average£594FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£447Average£546FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£506Average£725FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£533Average£834FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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