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Cheap flights from London Stansted Airport to San Juan from £316

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SJU
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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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 17 October 2025.

Thu 13/1121:20STN - SJU
2 stops32h 12mMultiple Airlines
Thu 11/1221:40SJU - STN
1 stop12h 55mMultiple Airlines
Deal found 16/10£739
Sun 23/1106:10STN - SJU
3 stops43h 40mMultiple Airlines
Sat 29/1113:00SJU - STN
2 stops21h 30mMultiple Airlines
Deal found 15/10£739
Sun 9/1108:55STN - SJU
2 stops38h 51mMultiple Airlines
Fri 14/1121:40SJU - STN
1 stop14h 15mMultiple Airlines
Deal found 16/10£760
Fri 7/1116:20STN - SJU
2 stops28h 45mMultiple Airlines
Tue 11/1113:00SJU - STN
2 stops20h 50mMultiple Airlines
Deal found 16/10£790
Mon 17/1116:45STN - SJU
2 stops28h 20mMultiple Airlines
Sun 23/1118:09SJU - STN
2 stops18h 06mMultiple Airlines
Deal found 15/10£791
Wed 31/1205:55STN - SJU
1 stop14h 40mMultiple Airlines
Thu 8/121:25SJU - STN
1 stop13h 10mMultiple Airlines
Deal found 15/10£799
Mon 1/1206:00STN - SJU
3 stops45h 55mMultiple Airlines
Sun 7/1218:30SJU - STN
2 stops17h 45mMultiple Airlines
Deal found 17/10£815
Mon 1/1206:00STN - SJU
3 stops45h 55mMultiple Airlines
Sat 6/1215:40SJU - STN
3 stops20h 55mMultiple Airlines
Deal found 17/10£829
Fri 5/1208:05STN - SJU
1 stop15h 50mMultiple Airlines
Tue 9/1221:40SJU - STN
1 stop12h 10mMultiple Airlines
Deal found 16/10£843

Cheap 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 17 October 2025.

Round-trip from

£647

One-way from

£316

Popular in

July

Cheapest in

September

Average price

£648
14/1-28/1
  • 14/1-28/1
  • 2 total stops
  • 27h 25m total
  • London to San Juan
Search Deals
12/12
  • 12/12
  • 2 total stops
  • 37h 03m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£69 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 17 October 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

Wed 14/1

05:55-16:35

1 stop14h 40m

San Juan Luis Munoz Marin Intl

Wed 28/1

21:25-14:10

1 stop12h 45m

£647

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 8/2

11:55-16:40

1 stop32h 45m

San Juan Luis Munoz Marin Intl

Sun 15/2

18:30-16:15

2 stops17h 45m

£679

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 24/1

18:35-16:35

1 stop26h 00m

San Juan Luis Munoz Marin Intl

Sat 31/1

17:27-18:10

2 stops20h 43m

£687

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 7/2

18:35-16:35

1 stop26h 00m

San Juan Luis Munoz Marin Intl

Sun 15/2

18:30-16:15

2 stops17h 45m

£696

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sat 24/1

18:35-16:35

1 stop26h 00m

San Juan Luis Munoz Marin Intl

Sun 1/2

18:30-16:15

2 stops17h 45m

£710

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Thu 26/2

07:40-19:55

1 stop16h 15m

San Juan Luis Munoz Marin Intl

Sun 1/3

18:10-11:30

1 stop13h 20m

£720

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 1/2

08:55-19:55

1 stop15h 00m

San Juan Luis Munoz Marin Intl

Sun 8/2

21:25-14:00

1 stop12h 35m

£732

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 23/11

06:10-21:50

3 stops43h 40m

San Juan Luis Munoz Marin Intl

Sat 29/11

13:00-14:30

2 stops21h 30m

£739

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 12/12

07:10-16:13

2 stops37h 03m

£316

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Fri 5/12

08:15-16:13

3 stops35h 58m

£323

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 17 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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How does Cheapflights help users find flights from Stansted to San Juan?

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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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