Cheap flights from Indianapolis to St. Louis from $101

Travelers frequently search for route combinations, such as Indianapolis and Orlando, Fort Lauderdale, New York, Las Vegas, Denver, Tampa, Mexico City, Dallas, Vancouver, Caracas, Los Angeles, Punta Gorda, Istanbul, Bogotá, Stockholm, New Orleans, Washington, D.C., Sarasota, Seattle, Cancún.

Travelers frequently search for route combinations, such as St. Louis and Denver, Orlando, Las Vegas, Los Angeles, London, Dallas, Fort Lauderdale, Bogotá, Mexico City, Tokyo, Frankfurt, Cebu, San Francisco, Athens, Amsterdam, Naples, Cancún, Portland, Washington, D.C., San Diego.

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

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Evansville Regional, Williamson County Regional, MidAmerica St. Louis, Waynesville-St. Robert Regional, Barkley Regional, Central Illinois Regional, Cape Girardeau Regional, Abraham Lincoln Capital.

Currently, you can fly between Indianapolis and St. Louis with United Airlines, Frontier Airlines, Spirit Airlines, Allegiant Air, Southern Airways Express.

If you don’t have specific dates for your trip between Indianapolis and St. Louis, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Indianapolis and St. Louis, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Indianapolis. The main one is Indianapolis International and other nearby airports include Cincinnati/Northern Kentucky International, Indianapolis International, Louisville International, South Bend International, Blue Grass, Fort Wayne International, Evansville Regional, Dayton International, Central Illinois Regional, Owensboro–Daviess County Regional

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include St. Louis Lambert International, General Wayne A. Downing Peoria International, Evansville Regional, Williamson County Regional, MidAmerica St. Louis, Waynesville-St. Robert Regional, Barkley Regional, Central Illinois Regional, Cape Girardeau Regional, Abraham Lincoln Capital.