Cheap Flights from Appleton (ATW) to St. Louis (CPS)

Popular airlines from Appleton, WI (ATW-Appleton Intl.) to St. Louis, MO (CPS-St. Louis Downtown)

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 $244
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $244

Frequently asked questions

How much does a flight from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS) cost?
Get a cheap one-way flight or cheap return flight from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS) 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 Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between ATW and CPS. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from ATW to CPS. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS)?
There are no daily nonstop flights departing from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from ATW to CPS?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS)?
To avoid possible delays on the Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS) route, aim to fly before 3 PM. Departures after this hour 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 Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS) last-minute?
Last-minute fares from ATW to CPS are generally more expensive. To lock in the lowest prices, start looking for flights ahead of time. That being said, if your travel plans are flexible, it's possible to score a cheap fare right before you leave.
Is it cheaper to book an ATW to CPS flight and hotel package?
You'll generally save money by booking an ATW to CPS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your preferred flights and accommodations, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Appleton Intl. Airport (ATW) to St. Louis Downtown Airport (CPS)?
In most instances, you're able to reschedule or cancel your ATW to CPS flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Appleton Intl.
Destination airport
St. Louis Downtown
Distance
401 mi

Book with confidence

Appleton to St. Louis Flights

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

 

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

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

 

Appleton to St. Louis Flights

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*Available to One Key members.