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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £210

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 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to London are usually found in January or February, booked 41 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap 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 November 2025.

Round-trip from

£407

One-way from

£210

Popular in

June

Cheapest in

January

Average price

£594
KLM
  • KLM
  • 3/12-10/12
  • 2 total stops
  • 30h 22m total
  • San Juan to London
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JetBlue
  • JetBlue
  • 23/11
  • 1 total stop
  • 34h 05m total
  • San Juan to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find 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 November 2025.

Wed 3/1213:57SJU - LHR
1 stop15h 03mKLM
Wed 10/1212:40LHR - SJU
1 stop15h 19mKLM
Deal found 4/11£407
Sun 9/1113:57SJU - LHR
1 stop13h 53mKLM
Thu 20/1110:10LHR - SJU
1 stop17h 46mKLM
Deal found 4/11£408
Wed 5/1114:32SJU - LHR
1 stop13h 18mDelta
Thu 13/1110:00LHR - SJU
2 stops17h 56mDelta
Deal found 3/11£415
Wed 5/1115:36SJU - LHR
1 stop16h 04mAir France
Fri 14/1112:40LHR - SJU
1 stop15h 16mAir France
Deal found 3/11£416
Tue 11/1107:00SJU - LHR
2 stops20h 05mDelta
Thu 20/1120:00LHR - SJU
1 stop20h 56mDelta
Deal found 4/11£423
Tue 2/1202:05SJU - LHR
1 stop14h 30mLufthansa
Wed 10/1208:00LHR - SJU
1 stop20h 36mLufthansa
Deal found 4/11£425
Tue 2/1202:05SJU - LHR
1 stop14h 30mUnited Airlines
Wed 10/1208:30LHR - SJU
2 stops17h 52mUnited Airlines
Deal found 4/11£431
Tue 2/1213:55SJU - LHR
1 stop15h 05mKLM
Sun 21/1216:10LHR - SJU
1 stop14h 17mKLM
Deal found 4/11£434
Wed 3/1214:10SJU - LCY
2 stops22h 30mMultiple Airlines
Wed 10/1219:10LCY - SJU
2 stops29h 50mMultiple Airlines
Deal found 4/11£456
Fri 7/1114:20SJU - LCY
2 stops17h 20mMultiple Airlines
Fri 14/1117:40LCY - SJU
2 stops32h 42mMultiple Airlines
Deal found 4/11£534
Sat 8/1108:10SJU - LCY
2 stops24h 35mMultiple Airlines
Sat 15/1108:35LCY - SJU
2 stops40h 25mMultiple Airlines
Deal found 3/11£535
Mon 10/1118:17SJU - LGW
1 stop31h 43mMultiple Airlines
Mon 17/1114:00LGW - SJU
1 stop16h 54mMultiple Airlines
Deal found 4/11£542

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 November 2025.
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

Wed 3/12

13:57-09:00

1 stop15h 03m

London Heathrow

Wed 10/12

12:40-23:59

1 stop15h 19m

£407

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/12

14:10-10:15

1 stop16h 05m

London Heathrow

Tue 9/12

15:50-12:42

1 stop24h 52m

£416

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 3/12

17:50-10:50

1 stop13h 00m

London Heathrow

Wed 10/12

06:50-22:22

2 stops19h 32m

£423

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Tue 2/12

07:15-06:20

1 stop19h 05m

London Heathrow

Tue 9/12

20:00-17:28

2 stops25h 28m

£424

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 15/1

07:45-07:30

1 stop19h 45m

London Heathrow

Mon 19/1

09:30-00:36

2 stops19h 06m

£447

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 27/11

14:10-08:05

1 stop13h 55m

London Heathrow

Thu 4/12

15:50-12:45

1 stop24h 55m

£454

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/12

02:05-20:35

1 stop14h 30m

London Heathrow

Tue 9/12

12:05-22:22

1 stop14h 17m

£454

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Tue 2/12

17:50-17:35

2 stops19h 45m

London City

Tue 9/12

19:10-21:00

2 stops29h 50m

£458

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-19:00

1 stop17h 35m

London Gatwick

Thu 29/1

11:45-19:55

1 stop12h 10m

£539

San JuanLondon

SJU - LCY

SJULCY

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-14:05

1 stop12h 40m

London City

Thu 29/1

07:50-19:55

1 stop16h 05m

£561

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 48 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 31 October 2025.

Booking 41 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 £77). Flying from San Juan Luis Munoz Marin Intl Airport to London in July is currently the most expensive (average of £696). 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 SJU to LON?

Find hourly flight availability from Luis Munoz Marin Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 November 2025.

A simple way to save on the total cost of your ticket is to fly from San Juan Luis Munoz Marin Intl Airport to London in the morning. If you’re flexible enough to do this you can expect to save up to 48% on your trip compared to booking a flight in the evening.

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 £768.

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?

    KLM, United Airlines, and Delta can get you from San Juan Luis Munoz Marin Intl Airport to London in just under 13h. Your travel time can differ by up to 6h 05m. The distance from San Juan Luis Munoz Marin Intl Airport to London is about 4179 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 £77). Flying from San Juan Luis Munoz Marin Intl Airport to London in July is currently the most expensive (average of £696). 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
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Luis Munoz Marin Intl to Manchester flights

Fly with Cheapflights

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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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