HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oshkosh

Cheap flights from St. Louis (STL) to Oshkosh, WI

STL — MKE
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Oshkosh with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Oshkosh

Keep the following information in mind while searching for St. Louis to Oshkosh flight deals. Data was last updated November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

September

Cheapest in

January

Average price

$331
Provider with most accurate pricing for Lambert-St Louis-Appleton Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Appleton Intl flights.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Oshkosh

What is the cheapest month to book a flight from St. Louis to Oshkosh?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Oshkosh (average of $166). Flying from St. Louis to Oshkosh in February is currently the most expensive (average of $302). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to OS9?

Find hourly flight availability from St. Louis to Oshkosh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Oshkosh in the evening. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from St. Louis to Oshkosh?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Oshkosh. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Oshkosh flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Oshkosh

Get insights into the airlines that provide service to Oshkosh. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oshkosh. Reviews last updated November 5, 2025.
See what other customers who have flown with American Airlines from St. Louis to Oshkosh have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,042 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Food

6.4

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.2
Good
11,042 reviews
American Airlines
7.2
Good
11,042 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Food

6.4

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Oshkosh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Oshkosh?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Oshkosh. You should not have trouble finding flights to Oshkosh from Lambert-St Louis; the airport handles an average of 0 outbound flights to Oshkosh per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the St. Louis airport to Oshkosh. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How popular is this St. Louis to Oshkosh flight route?

    Within the past month, 1 users have taken a look at flights from Lambert-St Louis to Oshkosh.

  • Can I find deals for flights from St. Louis to Oshkosh that include hotel bookings?

    Yes. In addition to deals on St. Louis to Oshkosh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Oshkosh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Oshkosh.

  • Can I find deals for business class flights from St. Louis to Oshkosh?

    Yes. Cheapflights offers flight deals from St. Louis to Oshkosh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Oshkosh?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Oshkosh (average of $166). Flying from St. Louis to Oshkosh in February is currently the most expensive (average of $302). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Oshkosh

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to O'Hare Intl flights
St. Louis to O'Hare Intl flights
St. Louis to Minneapolis flights
Kansas City to Minneapolis flights
Columbia to O'Hare Intl flights
Springfield to O'Hare Intl flights
Kansas City to Milwaukee flights
St. Louis to Milwaukee flights
St. Louis to Duluth flights
Quincy to O'Hare Intl flights
Springfield to Minneapolis flights
Kansas City to Madison flights
St. Louis to Wausau flights
Joplin to O'Hare Intl flights
Kansas City to Green Bay flights
Kansas City to Appleton flights
Springfield to Appleton flights
St. Louis to Rhinelander flights
St. Louis to Green Bay flights
St. Louis to Madison flights
Kansas City to Duluth flights
Springfield to Green Bay flights
Columbia to Minneapolis flights
Cape Girardeau to O'Hare Intl flights
Springfield to Milwaukee flights
Springfield to Madison flights
Joplin to Minneapolis flights
Columbia to Green Bay flights
Columbia to Madison flights
Branson to O'Hare Intl flights
St. Louis to Escanaba flights
Joplin to Madison flights
Springfield to La Crosse flights
Kansas City to La Crosse flights
Kansas City to Escanaba flights

Top 4 airlines flying from St. Louis to Oshkosh

Discover the top 4 airlines that operate flights from St. Louis to Oshkosh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$158Average$407FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$366FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$199Average$331FlexibilityNo cancel feeOn-time63%
DeltaCheapest$200Average$306FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.