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Cheap flights from San Juan Luis Munoz Marin Intl Airport to London from £176

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 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
17 Jan — 24 Jan1
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 February or January, booked 15 days in advance, depart on a Wednesday or Tuesday and return on a Monday

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 18 December 2025.

Tue 30/1207:00SJU - LHR
1 stop33h 10mDelta
Wed 11/206:30LHR - SJU
2 stops18h 28mDelta
Deal found 14/12£566
Tue 30/1210:15SJU - LHR
1 stop17h 15mLufthansa
Fri 13/206:50LHR - SJU
2 stops19h 32mLufthansa
Deal found 14/12£568
Tue 30/1207:45SJU - LHR
1 stop19h 45mUnited Airlines
Thu 12/206:30LHR - SJU
2 stops19h 52mUnited Airlines
Deal found 14/12£569
Tue 30/1207:00SJU - LHR
1 stop33h 10mDelta
Sat 14/206:30LHR - SJU
2 stops18h 42mDelta
Deal found 14/12£573
Tue 30/1207:45SJU - LHR
1 stop19h 45mUnited Airlines
Fri 13/212:05LHR - SJU
1 stop14h 17mUnited Airlines
Deal found 14/12£574
Wed 31/1210:15SJU - LHR
1 stop17h 15mLufthansa
Sat 10/108:00LHR - SJU
1 stop20h 36mLufthansa
Deal found 17/12£579
Tue 30/1207:30SJU - LHR
2 stops20h 10mDelta
Mon 16/206:30LHR - SJU
2 stops21h 28mDelta
Deal found 14/12£580
Tue 30/1208:10SJU - LHR
1 stop17h 45mUnited Airlines
Sun 15/212:05LHR - SJU
1 stop22h 06mUnited Airlines
Deal found 14/12£582
Tue 30/1202:05SJU - LHR
1 stop15h 15mUnited Airlines
Sat 10/108:00LHR - SJU
2 stops18h 22mUnited Airlines
Deal found 17/12£585
Tue 30/1215:30SJU - LCY
2 stops21h 05mDelta
Mon 16/210:00LCY - SJU
2 stops31h 05mDelta
Deal found 14/12£592
Wed 31/1214:08SJU - LHR
1 stop12h 42mKLM
Wed 7/120:00LHR - SJU
1 stop31h 57mKLM
Deal found 14/12£644
Wed 31/1208:10SJU - LHR
2 stops18h 10mUnited Airlines
Wed 7/107:40LHR - SJU
1 stop17h 20mUnited Airlines
Deal found 14/12£654

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 18 December 2025.

Round-trip from

£410

One-way from

£176

Popular in

June

Cheapest in

February

Average price

£631
Lufthansa
  • Lufthansa
  • 10/2-17/2
  • 2 total stops
  • 29h 56m total
  • San Juan to London
Search Deals
27/1
  • 27/1
  • 1 total stop
  • 17h 10m 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 (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 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

Tue 13/1

17:50-10:50

1 stop13h 00m

London Heathrow

Tue 20/1

06:50-22:22

2 stops19h 32m

£423

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 29/1

02:05-21:20

1 stop15h 15m

London Heathrow

Mon 2/2

08:30-22:22

2 stops17h 52m

£438

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 21/1

02:05-21:20

1 stop15h 15m

London Heathrow

Thu 29/1

08:30-22:22

2 stops17h 52m

£438

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Fri 13/2

02:05-20:35

1 stop14h 30m

London Heathrow

Sat 21/2

09:10-22:22

2 stops17h 12m

£444

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 22/1

14:15-09:00

1 stop14h 45m

London Heathrow

Thu 29/1

08:55-20:58

1 stop16h 03m

£445

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Tue 13/1

18:10-17:10

2 stops19h 00m

London Gatwick

Tue 20/1

17:20-16:35

2 stops27h 15m

£505

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/3

05:01-21:40

1 stop12h 39m

London Heathrow

Sun 22/3

07:45-22:51

1 stop19h 06m

£513

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 18/2

07:30-08:45

2 stops21h 15m

London Heathrow

Thu 26/2

10:10-23:58

2 stops17h 48m

£522

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 12/3

03:26-20:45

1 stop13h 19m

London Heathrow

Sat 21/3

08:05-20:26

1 stop16h 21m

£523

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Thu 30/4

13:50-09:30

1 stop14h 40m

London Heathrow

Mon 11/5

11:55-01:59

1 stop19h 04m

£524

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 60 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 12 December 2025.

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 £76). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £734). 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 18 December 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 44% 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 £751.

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, Iberia, 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 8h 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 £76). Flying from San Juan Luis Munoz Marin Intl Airport to London in June is currently the most expensive (average of £734). 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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