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Cheap flights from London Stansted Airport to San Juan from £292

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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SJU
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to San Juan
Explore the most affordable flight options available from Stansted to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Tue 23/1219:45STN - SJU
2 stops32h 56mMultiple Airlines
Sun 11/121:25SJU - STN
1 stop12h 35mMultiple Airlines
Deal found 16/12£1,234
Tue 16/1220:25STN - SJU
2 stops24h 40mMultiple Airlines
Fri 26/1212:22SJU - STN
2 stops23h 33mMultiple Airlines
Deal found 16/12£1,661
Sun 28/1208:55STN - SJU
1 stop15h 00mMultiple Airlines
Sat 10/121:25SJU - STN
1 stop13h 05mMultiple Airlines
Deal found 16/12£1,784
Tue 23/1208:10STN - SJU
1 stop15h 45mMultiple Airlines
Sat 10/121:25SJU - STN
1 stop13h 05mMultiple Airlines
Deal found 16/12£1,903
Mon 29/1208:05STN - SJU
1 stop15h 50mMultiple Airlines
Sat 10/121:25SJU - STN
1 stop13h 05mMultiple Airlines
Deal found 16/12£1,935
Fri 19/1208:05STN - SJU
1 stop15h 50mMultiple Airlines
Thu 25/1221:40SJU - STN
1 stop20h 15mMultiple Airlines
Deal found 18/12£2,129

Find flight deals from Stansted to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to San Juan (PR1). 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

£556

One-way from

£292

Popular in

December

Cheapest in

September

Average price

£959
24/1-30/1
  • 24/1-30/1
  • 4 total stops
  • 48h 40m total
  • London to San Juan
Search Deals
27/2
  • 27/2
  • 2 total stops
  • 33h 10m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£29 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted to San Juan 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 London Stansted Airport to San Juan that are best for you.

Fly from

Stansted

Fly to

San Juan

Route

Depart

Return

Price

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 18/1

08:55-19:55

1 stop15h 00m

San Juan Luis Munoz Marin Intl

Sun 25/1

21:25-19:30

1 stop18h 05m

£585

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 28/2

08:50-19:55

1 stop15h 05m

San Juan Luis Munoz Marin Intl

Mon 9/3

21:25-20:00

1 stop18h 35m

£618

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 7/3

16:20-17:05

2 stops28h 45m

San Juan Luis Munoz Marin Intl

Sat 14/3

18:30-23:35

2 stops25h 05m

£619

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 14/1

05:55-19:55

1 stop18h 00m

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-14:35

1 stop13h 10m

£662

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 14/1

05:55-19:55

1 stop18h 00m

San Juan Luis Munoz Marin Intl

Tue 20/1

21:25-13:50

1 stop12h 25m

£663

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Wed 14/1

05:55-19:55

1 stop18h 00m

San Juan Luis Munoz Marin Intl

Wed 21/1

21:25-19:40

1 stop18h 15m

£665

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 6/2

18:25-17:05

2 stops26h 40m

San Juan Luis Munoz Marin Intl

Sat 14/2

21:25-14:30

1 stop13h 05m

£667

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 15/1

07:40-19:55

1 stop16h 15m

San Juan Luis Munoz Marin Intl

Thu 22/1

21:25-14:35

1 stop13h 10m

£680

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 15/1

07:40-19:55

1 stop16h 15m

San Juan Luis Munoz Marin Intl

Tue 20/1

18:10-13:50

1 stop15h 40m

£681

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 14/2

21:00-12:39

2 stops43h 39m

San Juan Luis Munoz Marin Intl

Sun 22/2

21:25-16:15

1 stop14h 50m

£692

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 18 results
1
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Best time to book a flight from Stansted to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Stansted 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 Stansted Airport to San Juan
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Stansted to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Stansted to San Juan that include hotel bookings?

    Yes. In addition to deals on Stansted to San Juan flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Stansted to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to San Juan.

  • Can I find deals for business class flights from Stansted to San Juan?

    Yes. Cheapflights offers flight deals from Stansted to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Why should you use Cheapflights to find cheap flight tickets from Stansted to San Juan?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Stansted to San Juan.

Can Cheapflights find flights from Stansted to San Juan with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Stansted to San Juan flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Stansted to San Juan become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Juan from Stansted today and book when prices fit your budget.

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