IND - STL

$76 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 4/28. 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
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$151
Typical prices: $475-$324
Frontier
Fri 5/1Mon 5/4
IND - STL • 1 stop
Cheapest one-way
$76
Overall average: $183
Frontier
Tue 4/28
IND - STL • 1 stop
Nonstop flights
4 days a week
Tue, Thu, Fri, Sun
You can fly direct with Southwest. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $151 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $256 (round-trip)
Shortest trip • 3h 30m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
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 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

Fri, May 1 - Mon, May 4
Frontier Logo
8:46 pm - 7:32 pm
IND
-
STL
23h 46m
1 stop
Frontier Logo
8:17 pm - 7:54 pm
STL
-
IND
22h 37m
1 stop
$151Frontier
Fri, Apr 17 - Sat, Apr 18
Frontier Logo
8:23 am - 11:19 pm
IND
-
STL
15h 56m
1 stop
Frontier Logo
4:59 pm - 7:38 am
STL
-
IND
13h 39m
1 stop
$171Frontier
Mon, Apr 13 - Fri, Apr 17
Frontier Logo
5:30 pm - 11:25 pm
IND
-
STL
6h 55m
1 stop
Frontier Logo
8:39 am - 3:22 pm
STL
-
IND
5h 43m
1 stop
$180Frontier
Tue, Apr 28 - Tue, May 5
Multiple Airlines Logo
8:00 am - 6:50 am
IND
-
STL
23h 50m
2 stops
Multiple Airlines Logo
6:41 pm - 11:23 am
STL
-
IND
15h 42m
1 stop
$181Multiple Airlines
Tue, Apr 28 - Tue, May 5
Frontier Logo
12:07 pm - 11:19 pm
IND
-
STL
12h 12m
1 stop
Frontier Logo
6:41 pm - 11:23 am
STL
-
IND
15h 42m
1 stop
$182Frontier
Sun, Apr 12 - Wed, Apr 15
Frontier Logo
7:09 pm - 7:51 am
IND
-
STL
13h 42m
1 stop
Frontier Logo
4:59 pm - 10:27 am
STL
-
IND
16h 28m
1 stop
$191Frontier
Wed, Apr 15 - Sun, Apr 19
Frontier Logo
12:07 pm - 11:19 pm
IND
-
STL
12h 12m
1 stop
Frontier Logo
9:55 pm - 12:57 pm
STL
-
IND
14h 02m
1 stop
$201Frontier
Fri, Apr 10 - Tue, Apr 14
Frontier Logo
8:30 pm - 9:48 am
IND
-
STL
14h 18m
1 stop
Frontier Logo
4:59 pm - 11:11 am
STL
-
IND
17h 12m
1 stop
$212Frontier
Sat, Apr 11 - Wed, Apr 15
Multiple Airlines Logo
5:08 pm - 11:25 pm
IND
-
STL
7h 17m
1 stop
Multiple Airlines Logo
8:23 pm - 11:32 am
STL
-
IND
14h 09m
1 stop
$233Multiple Airlines
Mon, Apr 27 - Mon, May 4
Frontier Logo
7:14 pm - 11:19 pm
IND
-
STL
29h 05m
1 stop
Frontier Logo
8:23 pm - 7:54 pm
STL
-
IND
22h 31m
2 stops
$247Frontier
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.

How much is a round-trip flight from Indianapolis to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Indianapolis to St. Louis departing in May.

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 February, where the average cost of round-trip tickets is $556 and $515 respectively.

Good to know

Low seasonFebruary
Cheapest flight$76
Best time to beat the crowds but there is an average 43% increase in price.
Most popular time to fly and prices are also 7% 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 $76 for a one-way ticket and $151 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?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Indianapolis to St. Louis flight route.

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

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

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

    You can catch a nonstop flight from Indianapolis to St. Louis on on Tuesday.

  • 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.
7.1
American AirlinesOverall score based on 11543 reviews
7.2Comfort
6.4Food
7.5Boarding
6.9Entertainment
7.9Crew
Airline reviews

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

10.0 ExcellentDebbie, Mar 2026
HHH - CLT
Read more American Airlines reviews

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

The flight changed gates multiple times and flight had to be delayed multiple times

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

Information on your arrival and departure airports