$740 Cheap Flights from Shannon (SNN) to San Juan (SJU)

View $740 flight on Sun, Feb 8, 2026Opens in a new window

Popular airlines from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)

Cheap Flights from Shannon to San Juan (SNN-SJU)

Prices were available within the past 7 days and start at $740 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Shannon (SNN) to San Juan (SJU)
Origin airport
Shannon
Destination airport
Luis Munoz Marin Intl.
Distance
3846 mi

Shannon to San Juan Flights

The cheapest times to fly from Shannon to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Shannon to San Juan are during the month of . You can find some of the cheapest flights from Shannon to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Shannon to San Juan

Sunday is one of the best days to book for cheap flights from Shannon to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Shannon to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Shannon to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $740 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Shannon to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Shannon to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU) cost?
Snag a cheap one-way flight from $740 or cheap return flight from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)?
The cheapest month to fly from SNN to SJU is , when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SNN to SJU flight.
How many flights per day from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)?
Nonstop flights from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SNN to SJU?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)?
Opt for a flight from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Last-minute bookings from SNN to SJU are generally more expensive. To secure the lowest prices, start searching for flights early. That said, if your travel plans are flexible, it's possible to land a cheap ticket right before your journey.
Can I cancel or change the date of my flight from Shannon Airport (SNN) to Luis Munoz Marin Intl. Airport (SJU)?
In most instances, you can cancel or reschedule your SNN to SJU flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further information, head to our Customer Service portal.

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*Available to One Key members.