$109 Cheap Flights from St. Louis (STL) to West Palm Beach (PBI)

View $109 flight on Wed, Aug 13, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Palm Beach Intl. Airport (PBI)

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Cheap Flights from St. Louis to West Palm Beach (STL-PBI)

Prices were available within the past 7 days and start at $109 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Jul 20 - Fri, Jul 25
STL
St. Louis
PBI
West Palm Beach
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Jul 20 from St. Louis to West Palm Beach, returning Fri, Jul 25, priced at $179 found 1 day ago
Southwest Airlines
Thu, Aug 28 - Mon, Sep 1
STL
St. Louis
PBI
West Palm Beach
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Aug 28 from St. Louis to West Palm Beach, returning Mon, Sep 1, priced at $217 found 2 days ago
Delta
Mon, Aug 4 - Wed, Aug 6
STL
St. Louis
PBI
West Palm Beach
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Aug 4 from St. Louis to West Palm Beach, returning Wed, Aug 6, priced at $217 found 2 days ago
United
Thu, Sep 25 - Mon, Sep 29
STL
St. Louis
PBI
West Palm Beach
$217 Roundtrip, found 4 days ago
$217
Roundtrip
found 4 days ago
Select United flight, departing Thu, Sep 25 from St. Louis to West Palm Beach, returning Mon, Sep 29, priced at $217 found 4 days ago
Southwest Airlines
Thu, Sep 18 - Tue, Sep 23
STL
St. Louis
PBI
West Palm Beach
$222 Roundtrip, found 2 days ago
$222
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Sep 18 from St. Louis to West Palm Beach, returning Tue, Sep 23, priced at $222 found 2 days ago
Southwest Airlines
Thu, Sep 18 - Tue, Sep 23
STL
St. Louis
PBI
West Palm Beach
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Sep 18 from St. Louis to West Palm Beach, returning Tue, Sep 23, priced at $227 found 2 days ago
Delta
Tue, Aug 12 - Tue, Sep 2
STL
St. Louis
PBI
West Palm Beach
$241 Roundtrip, found 2 days ago
$241
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 12 from St. Louis to West Palm Beach, returning Tue, Sep 2, priced at $241 found 2 days ago
Delta
Tue, Aug 19 - Mon, Sep 8
STL
St. Louis
PBI
West Palm Beach
$250 Roundtrip, found 2 days ago
$250
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 19 from St. Louis to West Palm Beach, returning Mon, Sep 8, priced at $250 found 2 days ago
United
Thu, Sep 25 - Mon, Sep 29
STL
St. Louis
PBI
West Palm Beach
$253 Roundtrip, found 4 days ago
$253
Roundtrip
found 4 days ago
Select United flight, departing Thu, Sep 25 from St. Louis to West Palm Beach, returning Mon, Sep 29, priced at $253 found 4 days ago
American Airlines
Thu, Sep 4 - Sat, Sep 6
STL
St. Louis
PBI
West Palm Beach
$263 Roundtrip, found 3 days ago
$263
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Sep 4 from St. Louis to West Palm Beach, returning Sat, Sep 6, priced at $263 found 3 days ago

Find the cheapest month to fly from St. Louis (STL) to West Palm Beach (PBI)

May is typically the cheapest month to fly

From $226 - $446 per traveler.

Graph displaying average flight prices per month

Alternative airports near West Palm Beach

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

Select flight to Palm Beach Intl. PBI. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $447
PBI
Palm Beach Intl.
CheapestClosest
Average driving time to city center7 min
Flights from $447
Flights from St. Louis (STL) to West Palm Beach (PBI)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Palm Beach Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$178
Distance
1023 mi

St. Louis to West Palm Beach Flights

The cheapest times to fly from St. Louis to West Palm Beach

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

 

The best time to book a flight from St. Louis to West Palm Beach

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

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 West Palm Beach in 2025. You can also book with separate airlines for your outbound and return journeys, from $109 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 West Palm Beach 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 West Palm Beach 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 Palm Beach Intl. Airport (PBI) cost?
Discover the latest flight deals from STL to PBI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to PBI?
The cheapest flights from STL to PBI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to PBI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to PBI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Palm Beach Intl. Airport (PBI)?
There aren't any daily nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Palm Beach Intl. Airport (PBI). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from STL to PBI?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Palm Beach Intl. Airport (PBI)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Palm Beach Intl. Airport (PBI) route, fly before 3 PM. Later flights have a 22% higher chance of being 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 West Palm Beach from Lambert-St. Louis Intl. Airport (STL)?
If you're traveling on a direct flight from Lambert-St. Louis Intl. Airport (STL) to West Palm Beach, Fort Lauderdale - Hollywood Intl. Airport (FLL) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Palm Beach Intl. Airport (PBI) last-minute?
Booking your flight from STL to PBI right before your journey is typically more expensive. But if you're flexible with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a STL to PBI flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to PBI flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Simply secure your flights and select from our wide range of hotels, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Palm Beach Intl. Airport (PBI)?
If you reserved your STL to PBI flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.