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St. Louis

$167+ Cheap flights from Oshkosh, WI to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap flight deals from Oshkosh to St. Louis

Cheapest flights from Oshkosh to St. Louis
Explore the most affordable flight options available from Oshkosh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:17 pm
ATW
-
STL
1 stop9h 04m
Multiple Airlines
Wed 5/135:27 pm
STL
-
ATW
2 stops20h 36m
Multiple Airlines
Deal found 3/17$272
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:20 pm
ATW
-
STL
1 stop6h 53m
Delta
Tue 5/121:59 pm
STL
-
ATW
1 stop3h 35m
Delta
Deal found 3/17$291
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
ATW
-
STL
2 stops7h 22m
American Airlines
Tue 4/287:05 am
STL
-
ATW
1 stop3h 22m
American Airlines
Deal found 3/18$296
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/142:43 pm
ATW
-
STL
1 stop6h 30m
United Airlines
Wed 5/208:30 pm
STL
-
ATW
1 stop3h 44m
United Airlines
Deal found 3/18$300
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:31 pm
ATW
-
STL
1 stop5h 15m
American Airlines
Tue 5/53:38 pm
STL
-
ATW
2 stops8h 02m
American Airlines
Deal found 3/18$305
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:15 am
ATW
-
STL
1 stop4h 33m
United Airlines
Sun 5/38:30 pm
STL
-
ATW
1 stop3h 44m
United Airlines
Deal found 3/18$309
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:25 am
ATW
-
STL
1 stop4h 07m
Delta
Tue 5/125:36 pm
STL
-
ATW
1 stop5h 18m
Delta
Deal found 3/17$311
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:57 am
ATW
-
STL
1 stop5h 03m
American Airlines
Wed 4/158:03 pm
STL
-
ATW
1 stop3h 37m
American Airlines
Deal found 3/20$313
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:31 pm
ATW
-
STL
1 stop5h 15m
American Airlines
Tue 4/1410:24 am
STL
-
ATW
2 stops7h 37m
American Airlines
Deal found 3/18$314
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/35:40 am
ATW
-
STL
1 stop5h 55m
American Airlines
Tue 4/76:00 am
STL
-
ATW
1 stop4h 27m
American Airlines
Deal found 3/18$319
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:31 pm
ATW
-
STL
1 stop3h 46m
American Airlines
Wed 4/158:03 pm
STL
-
ATW
1 stop3h 37m
American Airlines
Deal found 3/19$320

Find flight deals from Oshkosh to St. Louis

Keep the following information in mind while searching for Oshkosh to St. Louis flight deals. Data was last updated March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$272
(Kiwi.com)

One-way from

$167
(United Airlines)

Popular in

September

Cheapest in

July

Average price

$298
Provider with most accurate pricing for Appleton Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Appleton Intl-Lambert-St Louis flights.
Search Deals
From Oshkosh to Lambert-St Louis
Search Deals
One-way flight from Oshkosh to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oshkosh to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2026.
Use the filters below to find and compare flights from Oshkosh to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Sat 4/25

4:20 pm-11:13 pm

1 stop6h 53m

Lambert-St Louis

Tue 4/28

6:48 am-10:31 am

1 stop3h 43m

$291

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 5/5

4:20 pm-11:13 pm

1 stop6h 53m

Lambert-St Louis

Tue 5/12

1:59 pm-5:34 pm

1 stop3h 35m

$291

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 4/30

6:15 am-10:48 am

1 stop4h 33m

Lambert-St Louis

Tue 5/5

11:15 am-3:10 pm

1 stop3h 55m

$300

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 4/30

6:15 am-10:48 am

1 stop4h 33m

Lambert-St Louis

Sun 5/3

8:30 pm-12:14 am

1 stop3h 44m

$309
Quickest round-trip

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Thu 5/7

5:38 pm-9:13 pm

1 stop3h 35m

Lambert-St Louis

Mon 5/11

8:30 pm-12:14 am

1 stop3h 44m

$309

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 4/13

6:31 pm-10:17 pm

1 stop3h 46m

Lambert-St Louis

Wed 4/15

8:03 pm-11:40 pm

1 stop3h 37m

$320

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Fri 4/3

9:38 am-7:29 pm

2 stops9h 51m

Lambert-St Louis

Tue 4/7

6:00 am-10:27 am

1 stop4h 27m

$324

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Wed 7/8

7:15 pm-11:56 pm

1 stop4h 41m

Lambert-St Louis

Sun 7/12

6:00 am-10:24 am

1 stop4h 24m

$334

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Tue 5/5

4:20 pm-11:13 pm

1 stop6h 53m

Lambert-St Louis

Thu 5/14

6:45 am-10:28 am

1 stop3h 43m

$349

AppletonSt. Louis

ATW - STL

ATWSTL

Appleton Intl

Mon 4/13

7:00 am-6:50 am

2 stops47h 50m

Lambert-St Louis

Wed 4/15

4:59 pm-10:17 pm

1 stop29h 18m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Oshkosh to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Oshkosh with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, April is the cheapest month in which you can book a flight from Oshkosh to St. Louis (average of $156). Flying from Oshkosh to St. Louis in February is currently the most expensive (average of $268). 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 OS9 to STL?

Find hourly flight availability from Oshkosh to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2026.

A simple way to save on the total cost of your ticket is to fly from Oshkosh to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight in the evening.

How much does it cost to fly round-trip from Oshkosh to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated March 21, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Oshkosh to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,312 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,312 reviews
Delta
7.9
Good
8,312 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,452 reviews
Delta
7.9
Good
8,312 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,488 reviews
Delta
7.9
Good
8,312 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Oshkosh to St. Louis. 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 into for flights to St. Louis from Oshkosh?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Oshkosh. On average, Lambert-St Louis has 0 inbound flights from Oshkosh per day from 4 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

    Flights from Oshkosh to Lambert-St Louis have been viewed 25 times in the past calendar month.

  • How long is the flight from Oshkosh to St. Louis?

    Delta and United Airlines can get you from Oshkosh to St. Louis in just under 4h 33m. Your travel time can differ by up to 2h 20m. Oshkosh and St. Louis are separated by a distance of 392 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest flights from Oshkosh to St. Louis?

    The cheapest flight price from Oshkosh to St. Louis is $165. On average you can expect to pay $360. The most popular route, (Appleton Intl - Lambert-St Louis), can usually be booked for $309.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oshkosh to St. Louis 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 Oshkosh to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Oshkosh to St. Louis (average of $156). Flying from Oshkosh to St. Louis in February is currently the most expensive (average of $268). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Oshkosh to St. Louis

Discover the top 4 airlines that operate flights from Oshkosh to St. Louis. 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 March 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$156Average$339FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$372FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$212Average$300FlexibilityNo cancel feeOn-time71%
DeltaCheapest$213Average$288FlexibilityNo cancel feeOn-timeN/A

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