Cheap Flights from St. Petersburg (PIE) to St. Louis (STL)

Popular airlines from St. Petersburg-Clearwater Intl. Airport (PIE) to St. Louis Lambert Intl. Airport (STL)

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Frequently asked questions

How much does a flight from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight or cheap return flight from St. Petersburg-Clearwater Intl. Airport (PIE) 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 deals on this route.
What is the cheapest month to fly from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from PIE to STL is , when demand is low. Off-peak months are usually when better flight deals are available between these airports.
Which airlines fly direct from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
You can't fly directly from St. Petersburg, FL (PIE-St. Petersburg-Clearwater Intl.) to Lambert-St. Louis Intl. Airport (STL). However, there are other airports that have nonstop flights. Start your journey at Tampa Intl. Airport (TPA) and travel straight to St. Louis without a layover.
What is the cheapest airline that flies from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from PIE to STL, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PIE to STL?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But 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 St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 St. Petersburg-Clearwater Intl. Airport (PIE)?
MidAmerica-St. Louis Airport (BLV) is the only airport in St. Louis with direct flights from St. Petersburg-Clearwater Intl. Airport (PIE). Explore your options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from PIE to STL are generally more expensive. To secure the lowest rates, start searching for flights ahead of time. That said, if you can play around with your travel dates, you may land a cheap fare right before your journey.
Is it cheaper to book a PIE to STL flight and hotel package?
You can save money by securing a PIE to STL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your ideal flights and accommodations, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from St. Petersburg-Clearwater Intl. Airport (PIE) to Lambert-St. Louis Intl. Airport (STL)?
Generally, it's possible to reschedule or cancel your PIE to STL flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
St. Petersburg-Clearwater Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
869 mi

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St. Petersburg to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from St. Petersburg 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 St. Petersburg 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 St. Petersburg 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 St. Petersburg 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 St. Petersburg 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.

 

St. Petersburg to St. Louis Flights

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*Available to One Key members.