$49 Find Cheap Flights from St. Louis to Indiana - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Indiana departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to Indiana

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Indianapolis
Indianapolis1 stop$112
Chicago
Chicago1 stop$127
Dayton
Dayton1 stop$271
Indianapolis
Indianapolis1 stop$112
Chicago
Chicago1 stop$127
Dayton
Dayton1 stop$271

Book Cheap St. Louis to Indiana Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Indiana that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Indiana

Mon, Oct 5 - Fri, Oct 9
Frontier Logo
10:35 am - 11:44 am
STL
-
IND
24h 09m
1 stop
Frontier Logo
12:39 pm - 9:40 am
IND
-
STL
22h 01m
1 stop
$112Frontier
Wed, Sep 16 - Sun, Sep 20
Frontier Logo
10:35 am - 11:44 am
STL
-
IND
24h 09m
1 stop
Frontier Logo
12:39 pm - 9:40 am
IND
-
STL
22h 01m
1 stop
$118Frontier
Sat, Sep 5 - Tue, Sep 8
Southwest Logo
2:55 pm - 8:35 pm
STL
-
MDW
5h 40m
1 stop
Southwest Logo
8:15 am - 9:35 am
MDW
-
STL
1h 20mnonstop
$127Southwest
Sat, Oct 10 - Tue, Oct 13
Southwest Logo
4:40 pm - 5:45 pm
STL
-
MDW
1h 05mnonstop
Southwest Logo
1:05 pm - 7:00 pm
MDW
-
STL
5h 55m
2 stops
$132Southwest
Wed, Aug 12 - Thu, Aug 27
Delta Logo
6:30 am - 12:39 pm
STL
-
MDW
6h 09m
1 stop
Delta Logo
1:25 pm - 5:38 pm
MDW
-
STL
4h 13m
1 stop
$157Delta
Thu, Aug 13 - Mon, Aug 17
Delta Logo
6:30 am - 1:08 pm
STL
-
ORD
6h 38m
1 stop
Delta Logo
1:41 pm - 8:42 pm
ORD
-
STL
7h 01m
1 stop
$157Delta
Thu, Aug 13 - Thu, Aug 13
United Airlines Logo
6:00 am - 7:33 am
STL
-
ORD
1h 33mnonstop
United Airlines Logo
10:29 am - 12:02 pm
ORD
-
STL
1h 33mnonstop
$162United Airlines
Mon, Oct 5 - Wed, Oct 7
United Airlines Logo
1:29 pm - 3:00 pm
STL
-
ORD
1h 31mnonstop
United Airlines Logo
10:40 am - 12:13 pm
ORD
-
STL
1h 33mnonstop
$165United Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
4:57 pm - 11:08 pm
STL
-
CVG
29h 11m
2 stops
Multiple Airlines Logo
12:26 pm - 5:22 pm
CVG
-
STL
5h 56m
1 stop
$189Multiple Airlines
Sun, Oct 11 - Wed, Oct 14
Multiple Airlines Logo
10:35 am - 12:49 pm
STL
-
IND
25h 14m
2 stops
Multiple Airlines Logo
12:39 pm - 9:40 am
IND
-
STL
22h 01m
1 stop
$191Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Indiana flights

Get data-powered insights and trends into flights from St. Louis to Indiana to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest St. Louis to Indiana flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Indiana from St. Louis found in the last 5 days was to Indianapolis, at $584 round-trip. The most popular route is from St. Louis (STL) to Indianapolis (IND), and the cheapest round-trip airline ticket found on this route in the last 5 days was $584.

What is the cheapest month to fly from St. Louis to Indiana?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Indiana, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Indiana is May, when tickets cost $0 (return) on average. On the other hand, the most expensive months are March and January, when the average cost of round-trip tickets is $777 and $685 respectively.

Good to know

Low season

January

Cheapest flight

$49
Best time to beat the crowds but there is an average 46% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from St. Louis to Chicago Midway Airport

FAQs - booking Indiana flights

  • How does KAYAK find such low prices on flights from St. Louis to Indiana?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Indiana.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Indiana?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Indiana is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Indiana?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Indiana with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Indiana?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Indiana up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Indiana

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Chicago $262 one-way - $507 round-trip

Reviews of the top airline flying from St. Louis to Indiana

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Indiana. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Indiana? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10034 reviews
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
Airline reviews

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

4.0 OkayHope, Jul 2026
IAD - IND
Read more United Airlines reviews

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

It was extremely hot in the cabin the entire flight, vent air was worn

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Everything you need to know for your flight from St. Louis to Indiana

Information on your arrival and departure airports