Cheap Flights from St. Louis (STL) to Oshkosh (OSH)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Oshkosh, WI (OSH-Wittman Regional)

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Alternative airports near Oshkosh

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

Select flight to Appleton Intl. ATW. Cheapest option available. Average driving time to city center is 25 minutes. Flights from $294
ATW
Appleton Intl.
Cheapest
Average driving time to city center25 min
Flights from $294
Flights from St. Louis (STL) to Oshkosh (OSH)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Wittman Regional
Distance
374 mi

St. Louis to Oshkosh Flights

The cheapest times to fly from St. Louis to Oshkosh

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

 

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

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

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 Oshkosh 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. Louis to Oshkosh 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 Oshkosh 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 Oshkosh, WI (OSH-Wittman Regional) cost?
Discover the latest flight deals from STL to OSH 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 OSH?
The cheapest flights from STL to OSH 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 OSH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to OSH. 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 Oshkosh, WI (OSH-Wittman Regional)?
There are no daily direct flights available from Lambert-St. Louis Intl. Airport (STL) to Oshkosh, WI (OSH-Wittman Regional). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from STL to OSH?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, airline 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 Oshkosh, WI (OSH-Wittman Regional)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Oshkosh, WI (OSH-Wittman Regional) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 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 Oshkosh, WI (OSH-Wittman Regional) last-minute?
Last-minute bookings from STL to OSH are usually more expensive. For the best rates, start looking for flights well ahead of time. That said, if your travel plans are flexible, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a STL to OSH flight and hotel package?
Booking a STL to OSH flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our wide range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Oshkosh, WI (OSH-Wittman Regional)?
If you reserved your STL to OSH flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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