IND - STL

$83 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 10/31. 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

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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Everything you should know

Cheapest round-trip
$195
Overall average: $405
Frontier
Mon 10/27Thu 10/30
IND - STL • 1 stop
Cheapest one-way
$83
Typical prices: $188-223
Frontier
Fri 10/31
IND - STL • 1 stop
Top airlines
Frontier
Cheapest • from $195 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 33% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, Oct 27 - Thu, Oct 30
Frontier Logo
8:51 pm - 9:07 amIND-STL
13h 16m1 stop
Frontier Logo
6:22 pm - 12:57 pmSTL-IND
17h 35m1 stop
$195Frontier
Find Deal
Thu, Nov 13 - Sat, Nov 15
Frontier Logo
8:39 pm - 9:07 amIND-STL
13h 28m1 stop
Frontier Logo
7:45 pm - 7:44 pmSTL-IND
22h 59m1 stop
$219Frontier
Find Deal
Wed, Oct 22 - Thu, Oct 23
American Airlines Logo
4:21 pm - 11:05 pmIND-STL
7h 44m1 stop
American Airlines Logo
5:30 am - 11:24 amSTL-IND
4h 54m1 stop
$221American Airlines
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Tue, Dec 9 - Thu, Dec 11
Delta Logo
7:57 pm - 11:29 pmIND-STL
4h 32m1 stop
Delta Logo
6:00 am - 12:07 pmSTL-IND
5h 07m1 stop
$223Delta
Find Deal
Wed, Oct 22 - Thu, Oct 23
Southwest Logo
5:40 am - 1:50 pmIND-STL
9h 10m2 stops
Southwest Logo
5:40 am - 11:45 amSTL-IND
5h 05m1 stop
$226Southwest
Find Deal
Wed, Dec 3 - Sat, Dec 6
American Airlines Logo
4:40 pm - 11:06 pmIND-STL
7h 26m1 stop
American Airlines Logo
1:59 pm - 9:00 pmSTL-IND
6h 01m1 stop
$232American Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Delta Logo
10:09 am - 4:21 pmIND-STL
7h 12m1 stop
Delta Logo
6:00 am - 12:07 pmSTL-IND
5h 07m1 stop
$234Delta
Find Deal
Wed, Dec 3 - Sat, Dec 6
Southwest Logo
7:50 am - 2:40 pmIND-STL
7h 50m2 stops
Southwest Logo
10:25 am - 3:40 pmSTL-IND
4h 15m1 stop
$239Southwest
Find Deal
Sun, Oct 12 - Mon, Oct 13
Multiple Airlines Logo
6:40 pm - 11:43 amIND-STL
18h 03m2 stops
Multiple Airlines Logo
9:06 pm - 9:20 amSTL-IND
11h 14m1 stop
$322Multiple Airlines
Find Deal
Sun, Oct 12 - Mon, Oct 13
Multiple Airlines Logo
5:30 am - 12:46 pmIND-STL
8h 16m1 stop
Multiple Airlines Logo
9:06 pm - 9:20 amSTL-IND
11h 14m1 stop
$330Multiple Airlines
Find Deal
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’s the cheapest day of the week to fly from Indianapolis to St. Louis?

The average price of all round-trip flights from Indianapolis to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from Indianapolis to St. Louis, you should consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Indianapolis, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

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 $266 (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.

Good to know

Low seasonFebruary
Cheapest flight$83
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 39% increase in price.
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 $83 for a one-way ticket and $195 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?

    SkyTeam, and oneworld are the airline alliances operating flights between Indianapolis and St. Louis, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Indianapolis to St. Louis, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Indianapolis to St. Louis are Delta and American Airlines. With an average price for the route of $460 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $316 and an overall rating of 7.2.

  • 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.

Reviews of the top airlines 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.
7.9
DeltaOverall score based on 7961 reviews
8.2Boarding
7.3Food
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

4.0 OkayPeter, Sep 2025SLC - SAN
Read more Delta reviews

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Very crowded flight but what can you expect these days?? Crew was accommodating.

We didn't take off until an hour after we boarded.

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Excellent - explanations were clear staff was nice and flight was comfortable

The flight was fine. This survey is not. There is no option for N/A so items which don’t apply to my experience still must be rated. In those instances I give a “3” rating which ultimately skews the results.

The actual trip was fine, however, the changes made to our flights and the layovers were had to endure were awful.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Flight from Dallas to OKC was good, but my trip was interrupted due to a delayed flight from Austin to DFW, which happens all the time. I frequently miss my connection from DFW and American can never seem to make this work!

Because the plane was 90 degrees F, they would not let us board. I wish they had, because it meant we were delayed. It's Texas, of course it's hot. We would have survived.

Wish they had the seat-back video screens for watching movies or playing games.

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

Information on your arrival and departure airports

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