STL - IND

$94 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 6/21. 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
$282
Overall average: $235
Frontier
Mon 9/21Wed 9/23
STL - IND • 1 stop
Cheapest one-way
$94
Typical prices: $145-$317
Frontier
Sun 6/21
STL - IND • 1 stop
Top airlines
Cheapest • from $282 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Indianapolis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $316 (round-trip)
Shortest trip • 3h 26m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 50% 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 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

Mon, Sep 21 - Wed, Sep 23
Frontier Logo
8:10 pm - 7:21 pm
STL
-
IND
22h 11m
1 stop
Frontier Logo
8:16 pm - 7:15 pm
IND
-
STL
23h 59m
1 stop
$282Frontier
Thu, Jun 18 - Thu, Jun 25
Frontier Logo
6:31 pm - 11:19 am
STL
-
IND
15h 48m
1 stop
Frontier Logo
8:51 pm - 8:52 am
IND
-
STL
13h 01m
2 stops
$286Frontier
Wed, Jun 3 - Sun, Jun 7
Frontier Logo
8:08 pm - 7:54 pm
STL
-
IND
22h 46m
1 stop
Frontier Logo
9:58 pm - 10:53 am
IND
-
STL
13h 55m
1 stop
$299Frontier
Sat, Jun 6 - Wed, Jun 10
Frontier Logo
4:19 pm - 1:01 pm
STL
-
IND
19h 42m
1 stop
Frontier Logo
1:44 pm - 6:18 pm
IND
-
STL
5h 34m
1 stop
$302Frontier
Mon, Sep 21 - Wed, Sep 23
Southwest Logo
10:10 am - 2:50 pm
STL
-
IND
3h 40m
1 stop
Southwest Logo
1:00 pm - 8:40 pm
IND
-
STL
8h 40m
2 stops
$313Southwest
Tue, Jun 16 - Sat, Jun 20
Southwest Logo
10:15 am - 3:30 pm
STL
-
IND
4h 15m
1 stop
Southwest Logo
5:10 am - 10:30 am
IND
-
STL
6h 20m
1 stop
$316Southwest
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
4:19 pm - 1:05 pm
STL
-
IND
19h 46m
1 stop
Frontier Logo
9:58 pm - 10:53 am
IND
-
STL
13h 55m
1 stop
$323Frontier
Mon, Sep 21 - Wed, Sep 23
Southwest Logo
2:45 pm - 10:20 pm
STL
-
IND
6h 35m
2 stops
Southwest Logo
1:00 pm - 8:40 pm
IND
-
STL
8h 40m
2 stops
$336Southwest
Tue, Jun 16 - Sat, Jun 20
Southwest Logo
10:15 am - 3:30 pm
STL
-
IND
4h 15m
1 stop
Southwest Logo
10:40 am - 6:00 pm
IND
-
STL
8h 20m
2 stops
$341Southwest
Thu, Jun 18 - Thu, Jun 25
Delta Logo
6:30 am - 1:41 pm
STL
-
IND
6h 11m
1 stop
Delta Logo
6:40 am - 9:32 am
IND
-
STL
3h 52m
1 stop
$347Delta
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.

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

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

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.

Good to know

Low seasonJanuary
Cheapest flight$94
Best time to beat the crowds but there is an average 47% increase in price.
Most popular time to fly with an average 15% 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

  • 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 $94 for a one-way ticket and $282 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?

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

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

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

  • 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.

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 11639 reviews
7.5Boarding
6.9Entertainment
7.2Comfort
6.4Food
7.9Crew
Airline reviews

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

2.0 MediocreDebbie A, May 2026
BTV - PHL
Read more American Airlines reviews

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

So overall the flight was just average and nothing special. They overbooked some of the flights and they ended up running out of overhead storage space so we had to check our carry-ons which wasn't terrible but we were inconvenienced because of the second connecting flight with a long layover we couldn't get our bags until the final destination. Most of the flight attendants were pretty good and overall the meals were not that great because the chicken was dry and overcooked. They also didn't provide butter or any kind of spread with the bread which is cheap and concerning. The American airlines staff at the check-in counter was kind of unprofessional because this lady just started singing in the middle of checking us in and that's weird. The worst part of the flights was the terrible conditions of the bathrooms which were unclean and did not have toilet paper or toilet tissue available which is kind of insane for a 14-hour and 8 and 1/2 hour flight.

Requested early boarding to disinfect seat, tray table, etc. before general boarding. Instructed to board after wheelchair passengers. Waited on jet bridge behind 12 wheelchair passengers. Stopped immediately after entering plane to wait for gate agent in rear of plane cleaning a seat that was wet, got to my row and found both seats adjacent to mine already occupied, with the lack of room making it impossible for me to clean my own space and defeating the purpose of my boarding early. Cleaned the armrests and tray table as best I could.

Seat bottom cushions are not good. I’m 165# & they hurt my butt. Plenty of legroom.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

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

Information on your arrival and departure airports