Cheap flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport from £422
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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJU
31 Dec — 7 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Juan Luis Munoz Marin Intl are usually found in September or February, booked 43 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 1 December 2025.
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 1 December 2025.
Sat 13/1212:20LHR - SJU
1 stop19h 28mJetBlue
Wed 14/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 29/11£588
Mon 15/1212:20LHR - SJU
1 stop19h 28mJetBlue
Thu 15/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 30/11£600
Mon 15/1208:05LHR - SJU
1 stop23h 43mJetBlue
Tue 13/119:15SJU - LHR
1 stop22h 25mJetBlue
Deal found 1/12£607
Sun 14/1209:20LHR - SJU
1 stop19h 02mJetBlue
Thu 15/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 30/11£630
Sat 6/1212:20LHR - SJU
1 stop19h 28mJetBlue
Sat 20/1217:24SJU - LHR
1 stop23h 21mJetBlue
Deal found 28/11£632
Thu 11/1207:25LHR - SJU
1 stop18h 29mJetBlue
Sun 28/1206:01SJU - LHR
1 stop34h 44mJetBlue
Deal found 29/11£639
Tue 16/1209:20LHR - SJU
1 stop18h 34mJetBlue
Thu 15/106:05SJU - LHR
1 stop23h 25mJetBlue
Deal found 30/11£642
Wed 10/1207:25LHR - SJU
1 stop15h 28mJetBlue
Sun 21/1212:40SJU - LHR
1 stop14h 15mJetBlue
Deal found 30/11£666
Wed 17/1209:20LHR - SJU
1 stop28h 40mJetBlue
Wed 25/205:10SJU - LHR
1 stop12h 30mJetBlue
Deal found 30/11£672
Best flights from Heathrow to Luis Munoz Marin Intl
Discover carefully curated flight deals from Heathrow to Luis Munoz Marin Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 December 2025.
Mon 12/108:05LHR - SJU
1 stop15h 18mJetBlue
Fri 16/114:00SJU - LHR
1 stop12h 55mJetBlue
Deal found 30/11£568
Mon 26/108:15LHR - SJU
2 stops30h 01mTAP AIR PORTUGAL
Thu 5/211:06SJU - LHR
2 stops26h 24mTAP AIR PORTUGAL
Deal found 29/11£644
Sun 8/320:50LHR - SJU
2 stops23h 50mMultiple Airlines
Sat 21/321:25SJU - LHR
2 stops18h 40mMultiple Airlines
Deal found 1/12£661
Mon 26/107:55LHR - SJU
1 stop17h 05mLufthansa
Wed 4/202:05SJU - LHR
1 stop14h 30mLufthansa
Deal found 30/11£826
Sat 13/1212:20LHR - SJU
1 stop19h 28mJetBlue
Wed 14/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 29/11£588
Fri 27/206:00LHR - SJU
2 stops25h 00mTAP AIR PORTUGAL
Sun 8/314:40SJU - LHR
2 stops22h 50mTAP AIR PORTUGAL
Deal found 1/12£653
Mon 15/1212:20LHR - SJU
1 stop19h 28mJetBlue
Thu 15/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 30/11£600
Mon 23/306:00LHR - SJU
2 stops21h 06mTAP AIR PORTUGAL
Mon 6/415:30SJU - LHR
2 stops22h 20mTAP AIR PORTUGAL
Deal found 30/11£710
Thu 12/207:40LHR - SJU
1 stop17h 20mLufthansa
Tue 17/202:05SJU - LHR
1 stop14h 30mLufthansa
Deal found 30/11£826
Sat 21/306:00LHR - SJU
2 stops22h 40mTAP AIR PORTUGAL
Sun 29/316:20SJU - LHR
2 stops20h 25mTAP AIR PORTUGAL
Deal found 30/11£780
Last-minute flights from Heathrow to Luis Munoz Marin Intl
Discover last-minute flight deals from Heathrow to Luis Munoz Marin Intl. Data last updated 1 December 2025 and is based on user searches.
Sat 6/1212:20LHR - SJU
1 stop19h 28mJetBlue
Sat 20/1217:24SJU - LHR
1 stop23h 21mJetBlue
Deal found 28/11£632
Wed 10/1207:25LHR - SJU
1 stop15h 28mJetBlue
Sun 21/1212:40SJU - LHR
1 stop14h 15mJetBlue
Deal found 30/11£666
Thu 11/1207:25LHR - SJU
1 stop18h 29mJetBlue
Sun 28/1206:01SJU - LHR
1 stop34h 44mJetBlue
Deal found 29/11£639
Sat 13/1212:20LHR - SJU
1 stop19h 28mJetBlue
Wed 14/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 29/11£588
Sun 14/1209:20LHR - SJU
1 stop19h 02mJetBlue
Thu 15/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 30/11£630
Mon 15/1212:20LHR - SJU
1 stop19h 28mJetBlue
Thu 15/111:06SJU - LHR
1 stop18h 24mJetBlue
Deal found 30/11£600
Mon 15/1208:05LHR - SJU
1 stop23h 43mJetBlue
Tue 13/119:15SJU - LHR
1 stop22h 25mJetBlue
Deal found 1/12£607
Tue 16/1209:20LHR - SJU
1 stop18h 34mJetBlue
Thu 15/106:05SJU - LHR
1 stop23h 25mJetBlue
Deal found 30/11£642
Wed 17/1209:20LHR - SJU
1 stop28h 40mJetBlue
Wed 25/205:10SJU - LHR
1 stop12h 30mJetBlue
Deal found 30/11£672
One-way flights from Heathrow to Luis Munoz Marin Intl
Search for one-way flight options from Heathrow to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated 1 December 2025.
Sat 6/1208:05LHR - SJU
1 stop14h 48mJetBlue
Deal found 29/11£422
Sat 6/1220:50LHR - SJU
3 stops49h 33mMultiple Airlines
Deal found 28/11£425
Thu 15/109:30LHR - SJU
2 stops18h 03mMultiple Airlines
Deal found 29/11£428
Sun 14/1212:20LHR - SJU
1 stop19h 28mJetBlue
Deal found 30/11£429
Sun 11/107:45LHR - SJU
1 stop15h 41mJetBlue
Deal found 1/12£432
Thu 15/107:25LHR - SJU
1 stop20h 25mJetBlue
Deal found 29/11£437
Sat 6/1212:25LHR - SJU
2 stops18h 52mTAP AIR PORTUGAL
Deal found 28/11£446
Sun 11/119:55LHR - SJU
2 stops32h 21mTAP AIR PORTUGAL
Deal found 30/11£449
Fri 9/107:50LHR - SJU
3 stops29h 57mMultiple Airlines
Deal found 1/12£461
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 December 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
Mon 12/1
08:05-19:23
1 stop15h 18m
San Juan Luis Munoz Marin Intl
Fri 16/1
14:00-06:55
1 stop12h 55m
£568
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sat 13/12
12:20-03:48
1 stop19h 28m
San Juan Luis Munoz Marin Intl
Wed 14/1
11:06-09:30
1 stop18h 24m
£588
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Mon 15/12
12:20-03:48
1 stop19h 28m
San Juan Luis Munoz Marin Intl
Thu 15/1
11:06-09:30
1 stop18h 24m
£600
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Mon 26/1
08:15-10:16
2 stops30h 01m
San Juan Luis Munoz Marin Intl
Thu 5/2
11:06-17:30
2 stops26h 24m
£644
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Fri 27/2
06:00-03:00
2 stops25h 00m
San Juan Luis Munoz Marin Intl
Sun 8/3
14:40-17:30
2 stops22h 50m
£653
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sun 8/3
20:50-16:40
2 stops23h 50m
San Juan Luis Munoz Marin Intl
Sat 21/3
21:25-20:05
2 stops18h 40m
£661
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Mon 23/3
06:00-23:06
2 stops21h 06m
San Juan Luis Munoz Marin Intl
Mon 6/4
15:30-18:50
2 stops22h 20m
£710
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Sat 21/3
06:00-00:40
2 stops22h 40m
San Juan Luis Munoz Marin Intl
Sun 29/3
16:20-17:45
2 stops20h 25m
£780
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Mon 26/1
07:55-21:00
1 stop17h 05m
San Juan Luis Munoz Marin Intl
Wed 4/2
02:05-20:35
1 stop14h 30m
£826
LondonSan Juan
LHR - SJU
LHRSJU
London Heathrow
Thu 12/2
07:40-21:00
1 stop17h 20m
San Juan Luis Munoz Marin Intl
Tue 17/2
02:05-20:35
1 stop14h 30m
£826
Flights are sorted by cheapest return flights first.
Deals found on 29/11
Showing 1-10 of 16 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
Prices
More
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 28 November 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 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, July 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 £446). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £538). 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 1 December 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 21% on your trip compared to booking a flight in the evening.
What’s the top stopover airport for flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?
Share of one-stop return flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
New York (JFK) – chosen by Cheapflights users on 55% of one-stop itineraries from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?
Average return fare for one-stop flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Boston (BOS) is the most affordable one-stop option, with an average return flight price of £642.
What’s the fastest stopover option from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Madrid (MAD) have the shortest average one-way travel time for one-stop routes: 13h 55m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 33m.
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 December 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.
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.
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.
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.
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.
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.
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 £568, JetBlue can have you in San Juan Luis Munoz Marin Intl Airport from London Heathrow Airport in 15h 18m. 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 (£337), Finnair (£456), and JetBlue (£459) 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 48% 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, July 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 £446). Flying from London Heathrow Airport to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of £538). 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.
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 1 December 2025.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 1 December 2025.
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 1 December 2025.
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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