$434 Cheap Flights from St. Louis (STL) to Florianópolis (FLN)

View $434 flight on Mon, Dec 15, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)

Cheap Flights from St. Louis to Florianópolis (STL-FLN)

Prices were available within the past 7 days and start at $434 for one-way flights and $894 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Feb 26 - Wed, Mar 11
STL
St. Louis
FLN
Florianópolis
$894 Roundtrip, found 14 hours ago
$894
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Thu, Feb 26 from St. Louis to Florianópolis, returning Wed, Mar 11, priced at $894 found 14 hours ago
Air Canada
Thu, Feb 26 - Wed, Mar 11
STL
St. Louis
FLN
Florianópolis
$899 Roundtrip, found 14 hours ago
$899
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Thu, Feb 26 from St. Louis to Florianópolis, returning Wed, Mar 11, priced at $899 found 14 hours ago
Air Canada
Sat, Mar 7 - Sun, Mar 22
STL
St. Louis
FLN
Florianópolis
$944 Roundtrip, found 3 days ago
$944
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Mar 7 from St. Louis to Florianópolis, returning Sun, Mar 22, priced at $944 found 3 days ago
Air Canada
Tue, Jan 13 - Tue, Jan 27
STL
St. Louis
FLN
Florianópolis
$954 Roundtrip, found 11 hours ago
$954
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Tue, Jan 13 from St. Louis to Florianópolis, returning Tue, Jan 27, priced at $954 found 11 hours ago
Air Canada
Sat, Sep 13 - Wed, Sep 17
STL
St. Louis
FLN
Florianópolis
$967 Roundtrip, found 2 days ago
$967
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Sep 13 from St. Louis to Florianópolis, returning Wed, Sep 17, priced at $967 found 2 days ago
United
Tue, Jan 13 - Tue, Jan 27
STL
St. Louis
FLN
Florianópolis
$1,012 Roundtrip, found 11 hours ago
$1,012
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Jan 13 from St. Louis to Florianópolis, returning Tue, Jan 27, priced at $1,012 found 11 hours ago
Air Canada
Sat, Sep 13 - Wed, Sep 17
STL
St. Louis
FLN
Florianópolis
$1,037 Roundtrip, found 2 days ago
$1,037
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Sep 13 from St. Louis to Florianópolis, returning Wed, Sep 17, priced at $1,037 found 2 days ago
Copa
Tue, Jan 13 - Tue, Jan 27
STL
St. Louis
FLN
Florianópolis
$1,038 Roundtrip, found 11 hours ago
$1,038
Roundtrip
found 11 hours ago
Select Copa flight, departing Tue, Jan 13 from St. Louis to Florianópolis, returning Tue, Jan 27, priced at $1,038 found 11 hours ago
LATAM Airlines Group
Tue, Jan 13 - Tue, Jan 27
STL
St. Louis
FLN
Florianópolis
$1,110 Roundtrip, found 11 hours ago
$1,110
Roundtrip
found 11 hours ago
Select LATAM Airlines Group flight, departing Tue, Jan 13 from St. Louis to Florianópolis, returning Tue, Jan 27, priced at $1,110 found 11 hours ago
Delta
Tue, Jan 13 - Tue, Jan 27
STL
St. Louis
FLN
Florianópolis
$1,112 Roundtrip, found 11 hours ago
$1,112
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Jan 13 from St. Louis to Florianópolis, returning Tue, Jan 27, priced at $1,112 found 11 hours ago
Flights from St. Louis (STL) to Florianópolis (FLN)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Hercílio Luz Intl.
Airlines serving
Air Canada, American Airlines, Delta, GOL Linhas Aereas S.A., LATAM Airlines Group
Roundtrip price
$894
Distance
5322 mi

St. Louis to Florianópolis Flights

The cheapest times to fly from St. Louis to Florianópolis

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

 

The best time to book a flight from St. Louis to Florianópolis

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

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 St. Louis to Florianópolis in 2025. You can also book with separate airlines for your outbound and return journeys, from $434 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 St. Louis to Florianópolis 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 St. Louis to Florianópolis 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 Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN) cost?
Snag a cheap one-way flight from $434 or cheap return flight from $894 from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)?
February is the most affordable month to fly from STL to FLN. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)?
To find the cheapest airline that'll fly you from STL to FLN, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)?
You'll need to catch a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from STL to FLN?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, time of year 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 Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN) route, fly before 3 PM. Later departures are 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 Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN) last-minute?
Last-minute bookings from STL to FLN are typically more expensive. To lock in the lowest rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book a STL to FLN flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to FLN flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Hercilio Luz Intl. Airport (FLN)?
If you booked your STL to FLN flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.