STL - IND

$70 Find Cheap Flights from St. Louis to Indianapolis

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 Indianapolis departing on 4/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Indianapolis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Indianapolis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Indianapolis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$234
Overall average: $572
Frontier
Fri 3/27Tue 3/31
STL - IND • 1 stop
Cheapest non-stop
$445
Southwest
Thu 4/2Sun 4/5
STL - IND • Non-stop
Nonstop flights
4 days a week
Tue, Thu, Fri, Sun
You can fly direct with Southwest. Average duration is 0h 55m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Frontier
Cheapest • from $234 (round-trip)
American Airlines
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Charlotte (CLT)
Cheapest • Avg $316 (round-trip)
Detroit (DTW)
Shortest trip • 3h 26m (one-way)
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 45% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Indianapolis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Indianapolis (STL-IND)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Indianapolis 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 Indianapolis

Fri, Mar 27 - Tue, Mar 31
Frontier Logo
8:12 pm - 7:38 pm
STL
-
IND
22h 26m
1 stop
Frontier Logo
8:33 pm - 9:48 am
IND
-
STL
14h 15m
1 stop
$234Frontier
Tue, Apr 28 - Tue, May 5
American Airlines Logo
5:51 am - 10:19 am
STL
-
IND
3h 28m
1 stop
American Airlines Logo
7:43 pm - 10:19 pm
IND
-
STL
3h 36m
1 stop
$272American Airlines
Fri, Apr 3 - Sun, Apr 5
Frontier Logo
8:16 pm - 7:32 pm
STL
-
IND
22h 16m
1 stop
Frontier Logo
8:27 pm - 9:48 am
IND
-
STL
14h 21m
1 stop
$279Frontier
Tue, Apr 28 - Tue, May 5
Southwest Logo
5:35 am - 12:40 pm
STL
-
IND
6h 05m
2 stops
Southwest Logo
1:25 pm - 7:55 pm
IND
-
STL
7h 30m
1 stop
$280Southwest
Tue, Apr 28 - Tue, May 5
Southwest Logo
3:10 pm - 10:50 pm
STL
-
IND
6h 40m
2 stops
Southwest Logo
6:10 am - 12:50 pm
IND
-
STL
7h 40m
2 stops
$285Southwest
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
11:21 am - 10:32 am
STL
-
IND
22h 11m
1 stop
Multiple Airlines Logo
2:42 pm - 8:55 am
IND
-
STL
19h 13m
2 stops
$286Multiple Airlines
Tue, Apr 14 - Thu, Apr 16
American Airlines Logo
3:24 pm - 9:25 pm
STL
-
IND
5h 01m
1 stop
American Airlines Logo
5:55 am - 8:24 am
IND
-
STL
3h 29m
1 stop
$287American Airlines
Sun, Apr 12 - Sun, Apr 19
Frontier Logo
11:33 am - 11:23 am
STL
-
IND
22h 50m
1 stop
Frontier Logo
12:12 pm - 6:50 am
IND
-
STL
19h 38m
1 stop
$293Frontier
Tue, Apr 7 - Tue, Apr 7
American Airlines Logo
7:00 am - 2:04 pm
STL
-
IND
6h 04m
1 stop
American Airlines Logo
8:53 pm - 11:46 pm
IND
-
STL
3h 53m
1 stop
$295American Airlines
Mon, Apr 27 - Mon, May 4
American Airlines Logo
5:51 am - 10:19 am
STL
-
IND
3h 28m
1 stop
American Airlines Logo
8:53 pm - 11:46 pm
IND
-
STL
3h 53m
1 stop
$297American Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Indianapolis, 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 Indianapolis is August, where tickets cost $234 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $685 and $684 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$70
Best time to beat the crowds but there is an average 60% increase in price.
Most popular time to fly with an average 28% increase in price.
Flight from St. Louis to Indianapolis

When to book flights from St. Louis to Indianapolis

Are your dates flexible? Find out the best times to travel from St. Louis to Indianapolis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Indianapolis

  • How many flights are there between St. Louis and Indianapolis per day?

    There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in Indianapolis, with an average flight time of 0h 55m. The most common departure time is 9:00 am and most flights take off in the afternoon. Each week, there are 4 flights.

  • What is the cheapest flight from St. Louis to Indianapolis?

    In the last 3 days, the lowest price for a flight from St. Louis to Indianapolis was $70 for a one-way ticket and $234 for a round-trip.

  • Do I need a passport to fly between St. Louis and Indianapolis?

    No

  • Which airports will I be using when flying from St. Louis to Indianapolis?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Indianapolis, also known as Indianapolis.

  • Which aircraft models fly most regularly from St. Louis to Indianapolis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Indianapolis?

    oneworld is the only airline alliance operating flights between St. Louis and Indianapolis.

  • On which days can I fly direct from St. Louis to Indianapolis?

    You can catch a nonstop flight from St. Louis to Indianapolis on on Tuesday, Thursday, Friday, and Sunday.

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

    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 Indianapolis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Indianapolis from St. Louis 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 Indianapolis?

    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 to Indianapolis with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and IND can sometimes prove cheaper using this method.

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

    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 to Indianapolis from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from St. Louis to Indianapolis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Indianapolis.
Find which airlines fly direct from Lambert-St Louis Airport to Indianapolis Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Indianapolis

Tuesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Indianapolis to Lambert-St Louis

Tuesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Indianapolis. 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 Indianapolis? 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.
7.1
American AirlinesOverall score based on 11468 reviews
7.2Comfort
6.4Food
7.5Boarding
7.9Crew
6.9Entertainment
Airline reviews

Delay after delay with little communication then AA lost my luggage and at airport would not assist just said scan this QR code to track your luggage and submit a claim. However QR code provided did not work so have to go back to airport

4.0 OkaySean, Mar 2026
PSP - DFW
Read more American Airlines reviews

Delay after delay with little communication then AA lost my luggage and at airport would not assist just said scan this QR code to track your luggage and submit a claim. However QR code provided did not work so have to go back to airport

After changing the departure gate 5 times making us mo e from one side of the airport to the other and then back the flight was delayed nearly 2 hours. The male flight attendant had a bad attitude with the guest being condescending, disrespectful with people who were already on edge.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

It would have been nice if American tried to care.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I booked 1st class, my flights were changed and I was sitting in the middle at the back of the plane. A far cry from the 1st class I purchased for my flights. I am grateful I arrived on time.

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Flights were constantly delayed. CRW took 50 minutes to get bags

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

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

Information on your arrival and departure airports

St. Louis (STL)
Indianapolis (IND)