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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £230

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
7 Mar — 14 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luis Munoz Marin Intl to London

Enter your travel dates to find the best prices.

Cheapest flights from Luis Munoz Marin Intl to London
Explore the most affordable flight options available from Luis Munoz Marin Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 February 2026.

Tue 17/313:14
SJU
-
LHR
1 stop13h 36m
KLM
Wed 25/311:45
LHR
-
SJU
2 stops28h 01m
KLM
Deal found 3/2£416
Tue 3/315:46
SJU
-
LHR
1 stop35h 44m
United Airlines
Tue 10/306:50
LHR
-
SJU
2 stops18h 32m
United Airlines
Deal found 3/2£423
Tue 3/302:05
SJU
-
LHR
1 stop15h 15m
United Airlines
Wed 11/309:30
LHR
-
SJU
2 stops18h 06m
United Airlines
Deal found 3/2£431
Mon 4/507:40
SJU
-
LHR
1 stop23h 05m
United Airlines
Tue 12/506:50
LHR
-
SJU
2 stops19h 34m
United Airlines
Deal found 3/2£435
Mon 9/314:44
SJU
-
LHR
1 stop14h 16m
KLM
Fri 20/315:50
LHR
-
SJU
1 stop22h 55m
KLM
Deal found 3/2£438
Wed 22/413:25
SJU
-
LHR
1 stop12h 50m
United Airlines
Wed 29/409:30
LHR
-
SJU
2 stops16h 54m
United Airlines
Deal found 2/2£438
Mon 2/308:05
SJU
-
LHR
2 stops27h 45m
United Airlines
Tue 10/306:50
LHR
-
SJU
2 stops18h 32m
United Airlines
Deal found 2/2£439
Tue 3/311:22
SJU
-
LGW
2 stops19h 33m
Multiple Airlines
Tue 10/311:55
LGW
-
SJU
2 stops35h 11m
Multiple Airlines
Deal found 3/2£445
Thu 30/401:21
SJU
-
LGW
1 stop23h 59m
Multiple Airlines
Fri 8/513:05
LGW
-
SJU
1 stop26h 21m
Multiple Airlines
Deal found 2/2£460
Wed 4/318:10
SJU
-
LGW
1 stop12h 40m
Multiple Airlines
Wed 11/310:00
LGW
-
SJU
1 stop13h 55m
Multiple Airlines
Deal found 4/2£477
Mon 2/311:22
SJU
-
LGW
2 stops19h 33m
Multiple Airlines
Tue 10/311:55
LGW
-
SJU
2 stops35h 11m
Multiple Airlines
Deal found 2/2£496
Wed 25/301:45
SJU
-
LGW
1 stop28h 15m
Multiple Airlines
Mon 6/414:00
LGW
-
SJU
1 stop23h 53m
Multiple Airlines
Deal found 2/2£522

Find flight deals from Luis Munoz Marin Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to London (LON). 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 5 February 2026.

Round-trip from

£416

One-way from

£230

Popular in

June

Cheapest in

February

Average price

£427
KLM
  • KLM
  • 17/3-25/3
  • 3 total stops
  • 41h 37m total
  • San Juan to London
Search Deals
8/5
  • 8/5
  • 1 total stop
  • 23h 59m total
  • San Juan to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luis Munoz Marin Intl to London 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 5 February 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

London

Route

Depart

Return

Price

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 3/3

15:46-07:30

1 stop35h 44m

London Heathrow

Tue 10/3

06:50-21:22

2 stops18h 32m

£423

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 3/3

02:05-20:35

1 stop14h 30m

London Heathrow

Wed 11/3

09:30-23:36

2 stops18h 06m

£432

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 4/5

07:40-11:45

1 stop23h 05m

London Heathrow

Tue 12/5

06:50-21:24

2 stops19h 34m

£436

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:25-07:15

1 stop12h 50m

London Heathrow

Wed 29/4

09:30-21:24

2 stops16h 54m

£438

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 17/2

23:50-21:40

1 stop17h 50m

London Heathrow

Mon 2/3

08:05-00:29

1 stop20h 24m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

23:50-21:40

1 stop17h 50m

London Heathrow

Thu 26/2

07:25-00:29

1 stop21h 04m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 5/3

02:05-21:20

1 stop15h 15m

London Heathrow

Fri 13/3

16:20-21:22

1 stop33h 02m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 24/2

23:59-21:40

1 stop17h 41m

London Heathrow

Tue 3/3

07:25-22:31

1 stop19h 06m

£445

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 22/4

13:25-10:20

1 stop15h 55m

London Heathrow

Wed 29/4

08:20-23:59

1 stop20h 39m

£449

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 29/3

13:14-06:45

1 stop12h 31m

London Heathrow

Wed 8/4

13:25-23:15

1 stop14h 50m

£451

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 49 results
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Best time to book a flight from Luis Munoz Marin Intl to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Use this chart to determine the optimal time to book a return flight from Luis Munoz Marin Intl to London. Price data was last updated on 30 January 2026.

Booking 15 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan Luis Munoz Marin Intl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London (average of £74). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £675). 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?

What’s the top stopover airport for flights from San Juan Luis Munoz Marin Intl Airport to London?

Share of one-stop return flights from San Juan Luis Munoz Marin Intl Airport to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

New York (JFK) – chosen by Cheapflights users on 80% of one-stop itineraries from San Juan Luis Munoz Marin Intl Airport to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Juan Luis Munoz Marin Intl Airport to London?

Average return fare for one-stop flights from San Juan Luis Munoz Marin Intl Airport to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Madrid (MAD) is the most affordable one-stop option, with an average return flight price of £734.

What’s the fastest stopover option from San Juan Luis Munoz Marin Intl Airport to London?

Shortest average travel time for one-stop one-way flights from San Juan Luis Munoz Marin Intl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via New York (JFK) have the shortest average one-way travel time for one-stop routes: 12h 58m.

Which airport typically offers the quickest stopover for flights from San Juan Luis Munoz Marin Intl Airport to London?

Average stopover duration for one-stop one-way flights from San Juan Luis Munoz Marin Intl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Madrid (MAD) offer the fastest connection on this route, with an average stopover time of 2h 25m.

Related info for your journey

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

    United Airlines, TAP AIR PORTUGAL, and Iberia can get you from San Juan Luis Munoz Marin Intl Airport to London in just under 23h 40m. Your travel time can differ by up to 12h 04m. The distance from San Juan Luis Munoz Marin Intl Airport to London is about 4188 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from San Juan Luis Munoz Marin Intl Airport to London?

    Most travelers choose San Juan Luis Munoz Marin Intl - London Heathrow, San Juan Luis Munoz Marin Intl - London Gatwick or San Juan Luis Munoz Marin Intl - London City when deciding on the best route from San Juan Luis Munoz Marin Intl Airport to London.

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

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

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

    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 London.

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

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to London 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?

    Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London (average of £74). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £675). 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 Luis Munoz Marin Intl to London

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

Fly with Cheapflights

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How does Cheapflights help users find flights from Luis Munoz Marin Intl to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Luis Munoz Marin Intl to London. 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 Luis Munoz Marin Intl to London?

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 London from Luis Munoz Marin Intl.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Luis Munoz Marin Intl to London flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Luis Munoz Marin Intl today and book when prices fit your budget.

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