Cheap flights from Indianapolis to St. Louis

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Travelers usually depart from Indianapolis International, Indianapolis Union Station, or Indianapolis. IN - Washington St Bus StopEstates when they travel from Indianapolis to St. Louis. Book your trip to arrive at St. Louis Lambert International, or St. Louis Union Station. The most popular airlines for this route are American Airlines, WN, Delta Air Lines, United Airlines, and Frontier Airlines. Indianapolis and St. Louis have 181 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights27304023-2833

Check-in for a flight from Indianapolis to St. Louis

NameCarrier codeIATA CodePassport needed during bookingAirport check-in closesOnline check-in available
American AirlinesAALAAYesUnknownNo
WNSWAWNNoUnknownNo
Delta Air LinesDALDLYesUnknownNo
United AirlinesUALUAYesUnknownNo
Frontier AirlinesFFTF9NoUnknownNo

Frequently asked questions

What are the most popular routes to and from Indianapolis?

Travelers frequently search for route combinations, such as Indianapolis and Orlando Sanford International, Denver International, Fort Lauderdale–Hollywood International, Tampa International, Dallas/Fort Worth International, Southwest Florida International, Sacramento International, Palm Beach International, Ontario International, Destin–Fort Walton Beach, Punta Gorda.

What are the most popular routes to and from St. Louis?

Travelers frequently search for route combinations, such as St. Louis and McCarran International, Orlando International, Denver International, San Jose International, Hector International, Owensboro–Daviess County Regional, Jonesboro Municipal, Quincy Regional, Williamson County Regional, Waynesville-St. Robert Regional, Kirksville Regional.

What airports are near Indianapolis?

The main airport in Indianapolis is Indianapolis International. It is also served by Cincinnati/Northern Kentucky International, Indianapolis International, Louisville International, Blue Grass, Fort Wayne International, Dayton International, South Bend International, Central Illinois Regional, Owensboro–Daviess County Regional, Evansville Regional.

What airports are near St. Louis?

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, Central Illinois Regional, General Wayne A. Downing Peoria International, Williamson County Regional, MidAmerica St. Louis, Evansville Regional, Quincy Regional, Columbia Regional, Decatur, Waynesville-St. Robert Regional.

What buses and trains depart from Indianapolis?

A number of bus and train companies depart from Indianapolis, including Hoosier ride, Miller Transportation.

Is it possible to combine flights, buses, and trains in one itinerary when traveling between Indianapolis and St. Louis?

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Which airlines fly between Indianapolis and St. Louis?

When's the best time to travel between Indianapolis and St. Louis?

What flights operate between Indianapolis and St. Louis?

How many airports are there near Indianapolis?

How many airports are there near St. Louis?

Is it possible to reach Indianapolis by bus or train?

What time do nonstop (direct) flights between Indianapolis and St. Louis depart?

What time do nonstop (direct) flights between Indianapolis and St. Louis arrive?

What time do flights between Indianapolis and St. Louis depart?

What time do flights between Indianapolis and St. Louis arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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