Question 1

What is the cheapest flight from Indianapolis to St. Louis?

Accepted Answer

In the last 3 days, the lowest price for a flight from Indianapolis to St. Louis was $65 for a one-way ticket and $123 for a round-trip. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between Indianapolis and St. Louis?

Accepted Answer

A passport is not required to fly from Indianapolis to St. Louis. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 3

Which aircraft models fly most regularly from Indianapolis to St. Louis?

Accepted Answer

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

Question 4

What is the cheapest month to fly from Indianapolis to St. Louis?

Accepted Answer

The cheapest month for flights from Indianapolis to St. Louis is August, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and February, where the average cost of round-trip tickets is $556 and $515 respectively.

Question 5

What is the cheapest month to fly from Indianapolis to St. Louis?

Accepted Answer

The cheapest month for flights from Indianapolis to St. Louis is August, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and February, where the average cost of round-trip tickets is $556 and $515 respectively.

Question 6

How does KAYAK find such low prices on flights from Indianapolis to St. Louis?

Accepted Answer

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. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 7

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Indianapolis to St. Louis?

Accepted Answer

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. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 8

What is the Hacker Fare option on flights from Indianapolis to St. Louis?

Accepted Answer

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. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 9

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Indianapolis to St. Louis?

Accepted Answer

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. <a href='/flight-routes/Indianapolis-IND/Lambert-St-Louis-STL'>Visit our flight page for the latest deals!>/a>

Question 10

What is the cheapest layover airport when flying from Indianapolis to St. Louis?

Accepted Answer

Flights via Chicago (MDW) offer the most affordable fares, with an average round-trip price of $256.

Question 11

What is the most popular layover airport when flying from Indianapolis to St. Louis?

Accepted Answer

Chicago (ORD) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Indianapolis to St. Louis picked an itinerary connecting there.

Question 12

Which layover airport has the quickest connection when flying from Indianapolis to St. Louis?

Accepted Answer

If you prefer a quick connection, Detroit (DTW) often has the shortest layovers from Indianapolis to St. Louis, with an average of 0h 49m.

Question 13

Which layover airport offers the shortest total travel time from Indianapolis to St. Louis?

Accepted Answer

Consider flying via Chicago (MDW) for the shortest journey. The average one-way travel time for flights connecting there is 3h 30m.

Question 14

Which cabin class options are there for flights between Indianapolis and St. Louis?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 15

Which cabin class options are there for flights between Indianapolis and St. Louis?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 16

Which airlines provide the cheapest flights from Indianapolis to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Indianapolis to St. Louis were found on Frontier ($123) and American Airlines ($302).

Question 17

Which airlines provide the cheapest flights from Indianapolis to St. Louis?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Indianapolis to St. Louis were found on Frontier ($123) and American Airlines ($302).

Question 18

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

Accepted Answer

Flight prices are below average for this route right now.Flights to St. Louis from Indianapolis usually cost between $525 and $473 in July.
The lowest price found in the past 3 days was $123 on Frontier (Jul 3-Jul 7).

Question 19

What are the most popular airlines flying to St. Louis?

Accepted Answer

The most popular airline among KAYAK users flying to St. Louis is American Airlines, followed by United Airlines and Delta.

Low season	November
High season	June
Cheapest flight	$65

IND - STL

$65 Find Cheap Flights from Indianapolis to St. Louis

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Everything you should know

Cheap Flights from Indianapolis to St. Louis (IND-STL)

Recent round-trip flight deals from Indianapolis to St. Louis

Recent one-way flight deals from Indianapolis to St. Louis

Recent last minute flight deals from Indianapolis to St. Louis

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.

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

What is the cheapest month to fly from Indianapolis to St. Louis?

The cheapest month for flights from Indianapolis to St. Louis is August, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and February, where the average cost of round-trip tickets is $556 and $515 respectively.

Which airlines provide the cheapest flights from Indianapolis to St. Louis?

In the past 3 days, the cheapest round-trip tickets from Indianapolis to St. Louis were found on Frontier ($123) and American Airlines ($302).

What is the most popular layover airport when flying from Indianapolis to St. Louis?

Chicago (ORD) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Indianapolis to St. Louis picked an itinerary connecting there.

What is the cheapest layover airport when flying from Indianapolis to St. Louis?

Flights via Chicago (MDW) offer the most affordable fares, with an average round-trip price of $256.

Which layover airport offers the shortest total travel time from Indianapolis to St. Louis?

Consider flying via Chicago (MDW) for the shortest journey. The average one-way travel time for flights connecting there is 3h 30m.

Which layover airport has the quickest connection when flying from Indianapolis to St. Louis?

If you prefer a quick connection, Detroit (DTW) often has the shortest layovers from Indianapolis to St. Louis, with an average of 0h 49m.

Which cabin class options are there for flights between Indianapolis and St. Louis?

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Good to know

When to book flights from Indianapolis to St. Louis

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 $65 for a one-way ticket and $123 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?

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

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?

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.

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

Information on your arrival and departure airports

Cabin class types available on flights from Indianapolis to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Find direct flights to and from Indianapolis and St. Louis

Flights to other popular destinations

Flights from domestic origins to St. Louis

Choose which airport to fly into in St. Louis

Find deals for your return flight