IND - STL

$68 Find Cheap Flights from Indianapolis to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Indianapolis to St. Louis departing on 3/8. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Indianapolis to St. Louis, 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 Indianapolis to St. Louis, as well as popular online travel agencies
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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$164
Overall average: $460
Frontier
Sun 3/1Wed 3/18
IND - STL • 1 stop
Cheapest one-way
$68
Typical prices: $163-$281
Frontier
Sun 3/8
IND - STL • 1 stop
Top airlines
Frontier
Cheapest • from $164 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 31% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
4 days a week
There are direct flights from Indianapolis to St. Louis 4 days a week: Tue, Thu, Fri, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
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 St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

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

Sun, Mar 1 - Wed, Mar 18
Frontier Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Frontier Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$164Frontier
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
6:00 am - 11:19 pm
IND
-
STL
18h 19m
2 stops
Multiple Airlines Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$194Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
9:28 am - 11:19 pm
IND
-
STL
14h 51m
1 stop
Multiple Airlines Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$195Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Multiple Airlines Logo
8:22 pm - 2:17 pm
STL
-
IND
16h 55m
2 stops
$197Multiple Airlines
Sun, Mar 1 - Wed, Mar 18
Frontier Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Frontier Logo
11:32 am - 8:12 am
STL
-
IND
19h 40m
2 stops
$205Frontier
Sat, Feb 28 - Wed, Mar 18
Frontier Logo
9:32 pm - 6:51 am
IND
-
STL
34h 19m
2 stops
Frontier Logo
11:32 am - 11:16 am
STL
-
IND
22h 44m
1 stop
$215Frontier
Sun, Apr 26 - Wed, Apr 29
Multiple Airlines Logo
2:43 pm - 6:50 am
IND
-
STL
17h 07m
2 stops
Multiple Airlines Logo
8:13 pm - 11:17 am
STL
-
IND
14h 04m
1 stop
$231Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
7:27 pm - 6:51 am
IND
-
STL
12h 24m
1 stop
Multiple Airlines Logo
3:49 pm - 8:32 am
STL
-
IND
15h 43m
1 stop
$264Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Southwest Logo
5:40 am - 1:50 pm
IND
-
STL
9h 10m
2 stops
Southwest Logo
6:10 am - 2:45 pm
STL
-
IND
7h 35m
2 stops
$265Southwest
Fri, Apr 17 - Sat, Apr 18
United Airlines Logo
7:45 pm - 10:56 pm
IND
-
STL
4h 11m
1 stop
United Airlines Logo
9:10 am - 3:08 pm
STL
-
IND
4h 58m
1 stop
$267United Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Indianapolis to St. Louis, 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 Indianapolis to St. Louis is November, where tickets cost $256 (return) on average. On the other hand, the most expensive months are September and July, where the average cost of round-trip tickets is $556 and $474 respectively.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$68
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Indianapolis to St. Louis

When to book flights from Indianapolis to St. Louis

Are your dates flexible? Find out the best times to travel from Indianapolis to St. Louis 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 Indianapolis to St. Louis

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

    In the last 3 days, the lowest price for a flight from Indianapolis to St. Louis was $68 for a one-way ticket and $164 for a round-trip.

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

    A passport is not required to fly from Indianapolis to St. Louis.

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

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

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

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

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

    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 Indianapolis to St. Louis.

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

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

    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 St. Louis with an airline and back to Indianapolis with another airline. Booking your flights between Indianapolis and STL 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 Indianapolis to St. Louis?

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

Prefer to fly direct from Indianapolis to St. Louis?

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

Direct departures

Indianapolis to Lambert-St Louis

Tuesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to Indianapolis

Tuesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from Indianapolis to St. Louis. 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 Indianapolis to St. Louis? 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.
7.2
American AirlinesOverall score based on 11288 reviews
8.0Crew
7.2Comfort
6.9Entertainment
7.5Boarding
6.4Food
Airline reviews

The flight was fine, once we got underway. It was more than hour delayed

8.0 ExcellentCrystal, Feb 2026
BOS - PHX
Read more American Airlines reviews

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

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

Information on your arrival and departure airports

Indianapolis (IND)
St. Louis (STL)