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Cheap flights from St. Louis to Indianapolis from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Indianapolis departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Indianapolis

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Indianapolis.
Delta Logo
6:00 am - 11:31 amSTL-IND
4h 31m1 stop
Delta Logo
7:05 pm - 11:49 pmIND-STL
5h 44m1 stop
$235Delta
Find Deal
Thu, May 1 - Tue, May 6
United Airlines Logo
9:17 am - 3:19 pmSTL-IND
5h 02m1 stop
United Airlines Logo
11:20 am - 3:44 pmIND-STL
5h 24m1 stop
$247United Airlines
Find Deal
Thu, Aug 28 - Mon, Sep 1
Southwest Logo
5:35 am - 3:05 pmSTL-IND
8h 30m2 stops
Southwest Logo
6:50 am - 1:30 pmIND-STL
7h 40m1 stop
$270Southwest
Find Deal
Thu, May 1 - Tue, May 6
Southwest Logo
5:35 am - 3:05 pmSTL-IND
8h 30m2 stops
Southwest Logo
11:25 am - 5:45 pmIND-STL
7h 20m2 stops
$299Southwest
Find Deal
Thu, May 1 - Tue, May 6
Southwest Logo
1:10 pm - 10:25 pmSTL-IND
8h 15m2 stops
Southwest Logo
12:30 pm - 8:25 pmIND-STL
8h 55m1 stop
$312Southwest
Find Deal
Thu, Aug 28 - Mon, Sep 1
Southwest Logo
1:10 pm - 10:25 pmSTL-IND
8h 15m2 stops
Southwest Logo
6:15 am - 1:05 pmIND-STL
7h 50m2 stops
$357Southwest
Find Deal
Thu, Aug 28 - Mon, Sep 1

United Airlines flights from St. Louis to Indianapolis

Our best United Airlines deals on St. Louis to Indianapolis flight tickets
United Airlines
Aug 28
STL9:17 amLambert-St Louis
5h 02m
1 stop
IND3:19 pmIndianapolis
Sep 1
IND11:20 amIndianapolis
5h 24m
1 stop
STL3:44 pmLambert-St Louis
United Airlines
Apr 16
STL8:00 amLambert-St Louis
3h 51m
1 stop
IND12:51 pmIndianapolis
Apr 20
IND7:30 amIndianapolis
4h 33m
1 stop
STL11:03 amLambert-St Louis
United Airlines
Apr 16
STL6:30 amLambert-St Louis
11h 45m
2 stops
IND7:15 pmIndianapolis
Apr 20
IND9:00 amIndianapolis
4h 20m
1 stop
STL12:20 pmLambert-St Louis

Southwest flights from St. Louis to Indianapolis

Our best Southwest deals on St. Louis to Indianapolis flight tickets
Southwest
May 1
STL5:35 amLambert-St Louis
8h 30m
2 stops
IND3:05 pmIndianapolis
May 6
IND6:50 amIndianapolis
7h 40m
1 stop
STL1:30 pmLambert-St Louis
Southwest
May 1
STL5:35 amLambert-St Louis
8h 30m
2 stops
IND3:05 pmIndianapolis
May 6
IND11:25 amIndianapolis
7h 20m
2 stops
STL5:45 pmLambert-St Louis
Southwest
Aug 28
STL1:10 pmLambert-St Louis
8h 15m
2 stops
IND10:25 pmIndianapolis
Sep 1
IND12:30 pmIndianapolis
8h 55m
1 stop
STL8:25 pmLambert-St Louis

See travel insights to Indianapolis from

How to get the cheapest flight ticket from St. Louis to Indianapolis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Indianapolis?

In general, April is the cheapest month to fly from St. Louis to Indianapolis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $249. If you are unable to visit Indianapolis during the month of April, then departing from St. Louis during the month December is also very affordable. Most momondo users find prices during this month for around $256.

What is the cheapest day to depart on your flight to Indianapolis?

Our data shows that Thursday is the least expensive day to fly to Indianapolis. Tickets to fly out on this day can be as low as $1,178. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Indianapolis on Friday is $1,331.

What is the cheapest time of day to depart on your flight to Indianapolis?

Flying to Indianapolis from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $256 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,297 on average. Flights to Indianapolis from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have St. Louis to Indianapolis flight prices changed over time?

As of April 2025, prices for St. Louis to Indianapolis flights are approximately 64% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Indianapolis

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Indianapolis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Indianapolis (STL to IND) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Indianapolis

Best Price Found

$119

Fastest flight time

3h 30m

Direct flights

None

Airports in Indianapolis

1 airport
The best one-way flight to Indianapolis from St. Louis in the past 72 hours is $119. The best round-trip flight deal from St. Louis to Indianapolis found on momondo in the last 72 hours is $235.
The fastest flight from St. Louis to Indianapolis takes 3h 30m
There are no direct flights from St. Louis to Indianapolis. Popular non-direct route for this connection is Lambert-St Louis Airport - Indianapolis Airport.
There is 1 airport near Indianapolis: Indianapolis (IND)

  • How far is Lambert-St Louis to Indianapolis by plane?

    A flight from Lambert-St Louis to Indianapolis will travel around 230.0 mi. Flights usually cover this in 4h 31m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Indianapolis Airport?

    Prices for flights from Lambert-St Louis Airport to Indianapolis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Indianapolis Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Indianapolis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Indianapolis Airport.

  • What documentation or ID do you need to fly to Indianapolis Airport?

    The travel and health documents required for your trip to Indianapolis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Indianapolis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Indianapolis?


Best airlines flying from St. Louis to Indianapolis

Compare and see reviews for airlines that fly from St. Louis to Indianapolis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $216Free CancellationRating
8.0
7,897 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Indianapolis?

Book flights to Indianapolis if you plan to visit one of these locations
Terre Haute
Bloomington
Kokomo
Anderson
Muncie
Greenwood
Fishers
Noblesville
Plainfield
Carmel
West Lafayette
Seymour
Shelbyville
Franklin
Greenfield
Speedway
Crawfordsville
Brownsburg
Westfield
Mooresville

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Indianapolis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Indianapolis for you.

Can I find flights from St. Louis to Indianapolis with flexible booking policies on momondo?

Flights from St. Louis to Indianapolis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Indianapolis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Indianapolis from St. Louis.

I’m not ready to book a flight from St. Louis to Indianapolis right now. Can momondo alert me if prices change?

Price alerts on flights to Indianapolis from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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