Find flights
When to book
FAQs

Cheap flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport from £260

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luis Munoz Marin Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Luis Munoz Marin Intl to Heathrow
Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 March 2026.

Thu 5/1114:41
SJU
-
LHR
1 stop13h 34m
Iberia
Mon 9/1108:25
LHR
-
SJU
1 stop15h 35m
Iberia
Deal found 6/3£549
Sun 11/1014:00
SJU
-
LHR
1 stop14h 00m
Iberia
Sat 17/1020:00
LHR
-
SJU
1 stop24h 25m
Iberia
Deal found 6/3£552
Thu 5/1118:43
SJU
-
LHR
1 stop12h 57m
Virgin Atlantic
Tue 10/1106:20
LHR
-
SJU
2 stops20h 53m
Virgin Atlantic
Deal found 6/3£554
Wed 16/913:32
SJU
-
LHR
1 stop14h 18m
Virgin Atlantic
Tue 22/906:15
LHR
-
SJU
2 stops20h 45m
Virgin Atlantic
Deal found 6/3£555
Thu 5/1107:00
SJU
-
LHR
1 stop21h 05m
Virgin Atlantic
Mon 9/1106:20
LHR
-
SJU
2 stops20h 53m
Virgin Atlantic
Deal found 8/3£556
Tue 5/517:34
SJU
-
LHR
1 stop14h 41m
Virgin Atlantic
Wed 13/512:50
LHR
-
SJU
1 stop15h 45m
Virgin Atlantic
Deal found 6/3£559
Tue 29/1203:45
SJU
-
LHR
1 stop12h 15m
Virgin Atlantic
Fri 8/120:00
LHR
-
SJU
1 stop31h 55m
Virgin Atlantic
Deal found 8/3£560
Wed 22/417:42
SJU
-
LHR
1 stop15h 53m
Virgin Atlantic
Wed 29/411:20
LHR
-
SJU
1 stop17h 39m
Virgin Atlantic
Deal found 7/3£569

Find flight deals from Luis Munoz Marin Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Heathrow (LHR). 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 10 March 2026.

Round-trip from

£559

One-way from

£260

Popular in

June

Cheapest in

September

Average price

£539
Virgin Atlantic
  • Virgin Atlantic
  • 5/5-13/5
  • 2 total stops
  • 30h 26m total
  • San Juan to London
Search Deals
JetBlue
  • JetBlue
  • 22/4
  • 1 total stop
  • 19h 47m total
  • San Juan to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£129 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luis Munoz Marin Intl to Heathrow 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 10 March 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 21/4

01:00-20:40

1 stop14h 40m

London Heathrow

Wed 29/4

07:30-21:24

2 stops18h 54m

£633

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 22/3

17:30-11:40

1 stop14h 10m

London Heathrow

Mon 30/3

09:20-23:15

1 stop18h 55m

£634

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 25/3

13:17-08:05

1 stop14h 48m

London Heathrow

Fri 3/4

15:15-10:50

1 stop24h 35m

£646
Fastest return journey

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 26/3

13:14-06:50

1 stop13h 36m

London Heathrow

Wed 1/4

13:25-23:15

1 stop14h 50m

£646

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 5/8

13:25-07:15

1 stop12h 50m

London Heathrow

Mon 24/8

09:30-23:50

2 stops19h 20m

£647

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 29/3

06:15-07:15

1 stop20h 00m

London Heathrow

Wed 8/4

11:15-20:18

1 stop14h 03m

£698

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 12/8

13:26-06:45

1 stop12h 19m

London Heathrow

Sun 16/8

20:05-13:30

2 stops22h 25m

£717

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/6

13:29-06:30

1 stop12h 01m

London Heathrow

Wed 17/6

08:40-20:56

1 stop17h 16m

£742

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 10/6

13:29-17:45

2 stops23h 16m

London Heathrow

Wed 17/6

06:00-02:20

2 stops25h 20m

£779

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 8/7

16:55-10:40

1 stop12h 45m

London Heathrow

Mon 20/7

10:00-05:29

1 stop24h 29m

£790

Flights are sorted by cheapest return flights first.

Deals found on 6/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Luis Munoz Marin Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Luis Munoz Marin Intl to Heathrow. Price data was last updated on 6 March 2026.

The price you pay for your flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £76). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £690). 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.

How much does it cost for a return flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl to Heathrow. 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    For as low as £634, United Airlines can have you in London Heathrow Airport from San Juan Luis Munoz Marin Intl Airport in 14h 10m. Airlines will cover a distance of 4179 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Luis Munoz Marin Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to Heathrow.

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Heathrow 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 San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of £76). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £690). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Luis Munoz Marin Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to Gatwick 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 Luis Munoz Marin Intl to Heathrow?

Deals for Luis Munoz Marin Intl to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Luis Munoz Marin Intl to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Luis Munoz Marin Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Luis Munoz Marin Intl to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Luis Munoz Marin Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Luis Munoz Marin Intl to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.