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Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £465

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
5 May — 12 May1
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 30 April 2025.

Round-trip from

£536

One-way from

£465

Popular in

July

Cheapest in

September

Average price

£606
Icelandair
  • Icelandair
  • 26/9-5/10
  • 3 total stops
  • 34h 50m total
  • London to San Juan
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6/8
  • 6/8
  • 3 total stops
  • 24h 54m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£99 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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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 30 April 2025.

Fri 26/908:25LHR - SJU
2 stops22h 20mIcelandair
Sun 5/1003:15SJU - LHR
1 stop12h 30mIcelandair
Deal found 29/4£536
Fri 26/908:15LHR - SJU
1 stop18h 03mJetBlue
Sun 5/1003:15SJU - LHR
1 stop12h 30mJetBlue
Deal found 29/4£538
Mon 7/720:10LHR - SJU
1 stop18h 52mMultiple Airlines
Fri 11/706:00SJU - LHR
1 stop19h 25mMultiple Airlines
Deal found 29/4£565
Mon 9/620:00LHR - SJU
1 stop24h 05mIberia
Fri 13/613:35SJU - LHR
1 stop14h 50mIberia
Deal found 29/4£687
Tue 6/511:20LHR - SJU
2 stops26h 54mTAP AIR PORTUGAL
Tue 13/513:58SJU - LHR
2 stops23h 52mTAP AIR PORTUGAL
Deal found 29/4£808
Fri 13/622:05LHR - SJU
1 stop23h 45mAvianca
Fri 20/614:10SJU - LHR
2 stops20h 25mAvianca
Deal found 28/4£857
Fri 26/908:30LHR - SJU
2 stops20h 27mUnited Airlines
Sun 5/1001:05SJU - LHR
1 stop14h 35mUnited Airlines
Deal found 29/4£871
Thu 3/712:30LHR - SJU
1 stop15h 25mBritish Airways
Tue 12/813:35SJU - LHR
1 stop14h 50mBritish Airways
Deal found 29/4£890
Tue 13/506:30LHR - SJU
2 stops22h 12mDelta
Thu 19/614:40SJU - LHR
2 stops15h 45mDelta
Deal found 29/4£916
Mon 16/607:30LHR - SJU
2 stops21h 27mLufthansa
Wed 25/613:25SJU - LHR
1 stop12h 50mLufthansa
Deal found 29/4£932

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 30 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

Fri 26/9

08:25-01:45

2 stops22h 20m

San Juan Luis Munoz Marin Intl

Sun 5/10

03:15-20:45

1 stop12h 30m

£536

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 26/9

08:15-21:18

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Sun 5/10

03:15-20:45

1 stop12h 30m

£538

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 19/5

14:40-10:00

2 stops24h 20m

San Juan Luis Munoz Marin Intl

Sat 24/5

21:30-19:45

1 stop17h 15m

£560

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Mon 9/6

20:00-15:05

1 stop24h 05m

San Juan Luis Munoz Marin Intl

Fri 13/6

13:35-09:25

1 stop14h 50m

£687

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 26/9

09:30-23:57

2 stops19h 27m

San Juan Luis Munoz Marin Intl

Mon 6/10

13:30-07:15

1 stop12h 45m

£852

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 13/6

22:05-16:50

1 stop23h 45m

San Juan Luis Munoz Marin Intl

Fri 20/6

14:10-15:35

2 stops20h 25m

£857

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Fri 26/9

08:30-23:57

2 stops20h 27m

San Juan Luis Munoz Marin Intl

Sun 5/10

01:05-20:40

1 stop14h 35m

£871

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Thu 3/7

12:30-22:55

1 stop15h 25m

San Juan Luis Munoz Marin Intl

Tue 12/8

13:35-09:25

1 stop14h 50m

£890

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 13/5

06:30-23:42

2 stops22h 12m

San Juan Luis Munoz Marin Intl

Thu 19/6

14:40-11:25

2 stops15h 45m

£916

LondonSan Juan

LHR - SJU

LHRSJU

London Heathrow

Tue 9/9

09:30-23:57

2 stops19h 27m

San Juan Luis Munoz Marin Intl

Tue 23/9

01:05-06:30

2 stops24h 25m

£996

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 17 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 25 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 30 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 30 April 2025.
Read through reviews of airlines operating flights from London to San Juan, such as Delta, United Airlines and JetBlue. 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.
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very Good
7,929 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
JetBlue
7.3
Good
2,922 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Air Canada
7.0
Good
9,244 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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, Icelandair (£536), JetBlue (£538), and Iberia (£687) 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 15% 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 £509 on Iberia. Other airlines that offer cheap prices include Avianca from £529 and JetBlue from £846 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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£419Average£551FlexibilityNo cancel feeOn-time76%
Search Finnair flights
JetBlueCheapest£439Average£661FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£451Average£567FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£506Average£685FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£559Average£709FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£872Average£1,129FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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