Find flights
When to book

Cheap flights from London Stansted Airport to San Juan from £320

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SJU
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

£530

One-way from

£320

Popular in

August

Cheapest in

January

Average price

£589
1/4-8/4
  • 1/4-8/4
  • 6 total stops
  • 63h 16m total
  • London to San Juan
Search Deals
23/3
  • 23/3
  • 2 total stops
  • 42h 06m total
  • London to San Juan
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Stansted to San Juan

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 21 February 2025.

Tue 1/411:40STN - SJU
3 stops31h 27mMultiple Airlines
Tue 8/421:51SJU - STN
3 stops31h 49mMultiple Airlines
Deal found 20/2£530

Find flights from Stansted to San Juan within your budget

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 21 February 2025.

Fly from

Stansted

Fly to

San Juan

Route

Depart

Return

Price

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Tue 1/4

11:40-14:07

3 stops31h 27m

San Juan Luis Munoz Marin Intl

Tue 8/4

21:51-10:40

3 stops31h 49m

£530

LondonSan Juan

STN - SJU

STNSJU

London Stansted

Sun 23/3

19:45-09:51

2 stops42h 06m

£320

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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.

Travel insights for flights from Stansted to San Juan

Get recent, data-driven insights about flights from Stansted to San Juan including ideal travel times, pricing trends, and more.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 55.0 - 156.0 inches per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan when rainfall is around 55.0 mm.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

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.

  • What is the cheapest month to book a flight from London Stansted Airport to San Juan?

    Currently, April is the cheapest month in which you can book a flight from London Stansted Airport to San Juan (average of £631). Flying from London Stansted Airport to San Juan in July is currently the most expensive (average of £1,027). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Stansted to San Juan?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Stansted to San Juan. 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 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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.