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Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £325

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
17 Apr — 24 Apr1
1 adult

Cheapflights Tip: The best prices from London Heathrow to San Juan Luis Munoz Marin Intl are usually found in September or February, booked 76 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 12 April 2025.

Round-trip from

£514

One-way from

£325

Popular in

July

Cheapest in

September

Average price

£628
JetBlue
  • JetBlue
  • 7/5-13/5
  • 2 total stops
  • 32h 44m total
  • London to San Juan
Search Deals
28/4
  • 28/4
  • 2 total stops
  • 43h 52m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 12 April 2025.

Wed 7/508:25LHR - SJU
1 stop20h 32mJetBlue
Tue 13/503:33SJU - LHR
1 stop12h 12mJetBlue
Deal found 9/4£514
Wed 3/910:50LHR - SJU
1 stop12h 40mIberia
Thu 18/915:58SJU - LHR
1 stop13h 37mIberia
Deal found 10/4£523
Wed 3/908:15LHR - SJU
1 stop22h 30mIcelandair
Wed 17/903:15SJU - LHR
1 stop12h 30mIcelandair
Deal found 11/4£528
Tue 13/519:40LHR - SJU
1 stop19h 20mMultiple Airlines
Wed 21/521:30SJU - LHR
1 stop17h 15mMultiple Airlines
Deal found 10/4£579
Thu 6/1112:25LHR - SJU
2 stops19h 55mTAP AIR PORTUGAL
Sat 15/1106:15SJU - LHR
2 stops25h 10mTAP AIR PORTUGAL
Deal found 10/4£651
Sat 3/506:30LHR - SJU
2 stops22h 24mUnited Airlines
Thu 8/507:00SJU - LHR
2 stops21h 20mUnited Airlines
Deal found 10/4£657
Tue 1/712:30LHR - SJU
1 stop15h 25mBritish Airways
Tue 29/716:30SJU - LHR
1 stop13h 05mBritish Airways
Deal found 10/4£692
Mon 27/1020:15LHR - SJU
2 stops31h 21mLufthansa
Tue 4/1107:45SJU - LHR
2 stops23h 30mLufthansa
Deal found 10/4£714

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 12 April 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 7/5

08:25-23:57

1 stop20h 32m

San Juan Luis Munoz Marin Intl

Tue 13/5

03:33-20:45

1 stop12h 12m

£514

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

10:50-18:30

1 stop12h 40m

San Juan Luis Munoz Marin Intl

Thu 18/9

15:58-10:35

1 stop13h 37m

£523

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Wed 3/9

08:15-01:45

1 stop22h 30m

San Juan Luis Munoz Marin Intl

Wed 17/9

03:15-20:45

1 stop12h 30m

£528

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 13/5

19:40-10:00

1 stop19h 20m

San Juan Luis Munoz Marin Intl

Wed 21/5

21:30-19:45

1 stop17h 15m

£579

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 3/5

06:30-23:54

2 stops22h 24m

San Juan Luis Munoz Marin Intl

Thu 8/5

07:00-09:20

2 stops21h 20m

£657

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 6/5

11:20-09:14

2 stops26h 54m

San Juan Luis Munoz Marin Intl

Tue 13/5

13:58-17:45

2 stops22h 47m

£689

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 1/7

12:30-22:55

1 stop15h 25m

San Juan Luis Munoz Marin Intl

Tue 29/7

16:30-10:35

1 stop13h 05m

£692

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 1/5

06:30-23:57

2 stops22h 27m

San Juan Luis Munoz Marin Intl

Sun 11/5

07:00-07:40

1 stop19h 40m

£802

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Sat 20/9

09:30-23:57

2 stops19h 27m

San Juan Luis Munoz Marin Intl

Fri 26/9

01:05-06:35

2 stops24h 30m

£832

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 28/4

19:00-09:52

2 stops43h 52m

£325

Flights are sorted by cheapest return flights first.

Deals found on 10/4

Showing 1-10 of 14 results
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?

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 4 April 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 76 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 12 April 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.

What is the cheapest day to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly return from Heathrow to Luis Munoz Marin Intl. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 55.0 mm.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

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 12 April 2025.
Read through reviews of airlines operating flights from London to San Juan, such as United Airlines, JetBlue and TAP AIR PORTUGAL. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,644 reviews
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
JetBlue
7.3
Good
2,923 reviews
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
TAP AIR PORTUGAL
7.1
Good
1,837 reviews
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Air Canada
7.0
Good
9,096 reviews
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Icelandair
7.0
Good
478 reviews
United Airlines
7.4
Good
8,644 reviews
Check prices

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • 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, JetBlue (£514), Iberia (£523), and Icelandair (£528) 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 21% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport one-way?

    One-way options have recently been found by users for as low as £502 on Iberia. Other airlines that offer cheap prices include Avianca from £562 and JetBlue from £569 one-way.

  • 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

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 12 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£431Average£566FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£450Average£678FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£461Average£575FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£515Average£700FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£576Average£744FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£868Average£1,159FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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