Cheap Flights from San Juan (SJU) to St. Louis (SUS)

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to St. Louis, MO (SUS-Spirit of St. Louis)

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Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $495
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $495
Flights from San Juan (SJU) to St. Louis (SUS)
Origin airport
Luis Munoz Marin Intl.
Destination airport
Spirit of St. Louis
Distance
2033 mi

San Juan to St. Louis Flights

The cheapest times to fly from San Juan to St. Louis

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 San Juan to St. Louis are during the month of . You can find some of the cheapest flights from San Juan to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Juan to St. Louis

Sunday is one of the best days to book for cheap flights from San Juan to St. Louis: 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 San Juan to St. Louis

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 San Juan to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 San Juan to St. Louis 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 San Juan to St. Louis 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 Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS) cost?
Lock in a cheap one-way flight or cheap return flight from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS)?
The cheapest month to fly from SJU to SUS is , when there's less demand. Off-peak season is usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS)?
To find the cheapest airline flying from SJU to SUS, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS)?
There aren't any daily direct flights from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from SJU to SUS?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS)?
Choose a flight from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour 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.
What airports do you fly into for St. Louis from Luis Munoz Marin Intl. Airport (SJU)?
Browse your flight options from Luis Munoz Marin Intl. Airport (SJU) to Lambert-St. Louis Intl. Airport (STL). This is the only airport in St. Louis you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS) last-minute?
Holding off until just before your trip to book your flight from SJU to SUS often results in higher prices. While it's possible to find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible to boost your chances of scoring a bargain.
Is it cheaper to book a SJU to SUS flight and hotel package?
Opting for a SJU to SUS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our wide range of accommodations and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Spirit of St. Louis Airport (SUS)?
Typically, it's possible to cancel or reschedule your SJU to SUS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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