$139 Cheap Flights from West Palm Beach (PBI) to St. Louis (STL)

View $139 flight on Wed, Sep 17, 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $139 for one-way flights and $277 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$277 Roundtrip, found 11 hours ago
$277
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $277 found 11 hours ago
American Airlines
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$277 Roundtrip, found 11 hours ago
$277
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $277 found 11 hours ago
Delta
Wed, Sep 17 - Tue, Sep 23
PBI
West Palm Beach
STL
St. Louis
$277 Roundtrip, found 4 hours ago
$277
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Sep 17 from West Palm Beach to St. Louis, returning Tue, Sep 23, priced at $277 found 4 hours ago
Southwest Airlines
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$282 Roundtrip, found 11 hours ago
$282
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $282 found 11 hours ago
United
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$287 Roundtrip, found 11 hours ago
$287
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $287 found 11 hours ago
Southwest Airlines
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$287 Roundtrip, found 11 hours ago
$287
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $287 found 11 hours ago
Southwest Airlines
Tue, Sep 16 - Sat, Sep 20
PBI
West Palm Beach
STL
St. Louis
$291 Roundtrip, found 3 days ago
$291
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Sep 16 from West Palm Beach to St. Louis, returning Sat, Sep 20, priced at $291 found 3 days ago
Southwest Airlines
Sat, Sep 20 - Tue, Sep 23
PBI
West Palm Beach
STL
St. Louis
$292 Roundtrip, found 9 hours ago
$292
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Sat, Sep 20 from West Palm Beach to St. Louis, returning Tue, Sep 23, priced at $292 found 9 hours ago
United
Tue, Sep 23 - Tue, Sep 30
PBI
West Palm Beach
STL
St. Louis
$292 Roundtrip, found 11 hours ago
$292
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 23 from West Palm Beach to St. Louis, returning Tue, Sep 30, priced at $292 found 11 hours ago
Delta
Wed, Oct 22 - Sat, Oct 25
PBI
West Palm Beach
STL
St. Louis
$294 Roundtrip, found 1 day ago
$294
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 22 from West Palm Beach to St. Louis, returning Sat, Oct 25, priced at $294 found 1 day ago

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

August is typically the cheapest month to fly

From $162 - $716 per traveler.

Graph displaying average flight prices per month

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 $362
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $362
Flights from West Palm Beach (PBI) to St. Louis (STL)
Origin airport
Palm Beach Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$276
Distance
1023 mi

West Palm Beach to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from West Palm Beach 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 West Palm Beach 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 West Palm Beach to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $139 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 West Palm Beach 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 West Palm Beach 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 Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $139 or cheap return flight from $277 from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL) 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 Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
September is the most affordable month to fly from PBI to STL. Traveling outside of peak seasons is often the key to finding a great deal.
Which airlines fly direct from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any direct flights from West Palm Beach, FL (PBI-Palm Beach Intl.) to Lambert-St. Louis Intl. Airport (STL). However, you'll find other airports offering nonstop flights. Start your journey at Fort Lauderdale - Hollywood Intl. Airport (FLL) and head straight to St. Louis without a layover.
What is the cheapest airline that flies from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from PBI to STL, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to hop on a flight with a layover if you're traveling from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from PBI to STL?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the airline, season 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 Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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 Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from PBI to STL shortly before your trip is typically more expensive. But if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a PBI to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a PBI to STL flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Palm Beach Intl. Airport (PBI) to Lambert-St. Louis Intl. Airport (STL)?
It's generally possible to reschedule or cancel your PBI to STL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.