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$92 Cheap Flights from Indianapolis (IND) to St. Louis (STL)

View $92 flight on Mon, Sep 21, 2026Opens in a new window

Popular airlines from Indianapolis Intl. Airport (IND) to St. Louis Lambert Intl. Airport (STL)

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

Prices were available within the past 7 days and start at $92 for one-way flights and $184 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 19 - Sat, Oct 24
IND
Indianapolis
STL
St. Louis
$184 Roundtrip, found 2 days ago
$184
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Indianapolis to St. Louis, returning Sat, Oct 24, priced at $184 found 2 days ago
Frontier Airlines
Mon, Oct 19 - Fri, Oct 23
IND
Indianapolis
STL
St. Louis
$193 Roundtrip, found 2 days ago
$193
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Indianapolis to St. Louis, returning Fri, Oct 23, priced at $193 found 2 days ago
Frontier Airlines
Fri, Oct 16 - Sat, Oct 24
IND
Indianapolis
STL
St. Louis
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Oct 16 from Indianapolis to St. Louis, returning Sat, Oct 24, priced at $218 found 2 days ago
Frontier Airlines
Mon, Oct 19 - Sun, Oct 25
IND
Indianapolis
STL
St. Louis
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Indianapolis to St. Louis, returning Sun, Oct 25, priced at $221 found 2 days ago
Frontier Airlines
Fri, Oct 16 - Fri, Oct 23
IND
Indianapolis
STL
St. Louis
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Oct 16 from Indianapolis to St. Louis, returning Fri, Oct 23, priced at $227 found 2 days ago
Southwest Airlines
Tue, Sep 1 - Wed, Sep 2
IND
Indianapolis
STL
St. Louis
$231 Roundtrip, found 5 days ago
$231
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Sep 1 from Indianapolis to St. Louis, returning Wed, Sep 2, priced at $231 found 5 days ago
Frontier Airlines
Mon, Oct 19 - Tue, Oct 20
IND
Indianapolis
STL
St. Louis
$233 Roundtrip, found 5 hours ago
$233
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Indianapolis to St. Louis, returning Tue, Oct 20, priced at $233 found 5 hours ago
United
Mon, Sep 7 - Thu, Sep 10
IND
Indianapolis
STL
St. Louis
$245 Roundtrip, found 6 days ago
$245
Roundtrip
found 6 days ago
Select United flight, departing Mon, Sep 7 from Indianapolis to St. Louis, returning Thu, Sep 10, priced at $245 found 6 days ago
Delta
Tue, Oct 20 - Tue, Oct 27
IND
Indianapolis
STL
St. Louis
$245 Roundtrip, found 2 days ago
$245
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 20 from Indianapolis to St. Louis, returning Tue, Oct 27, priced at $245 found 2 days ago
American Airlines
Wed, Sep 2 - Sat, Sep 5
IND
Indianapolis
STL
St. Louis
$253 Roundtrip, found 2 days ago
$253
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Sep 2 from Indianapolis to St. Louis, returning Sat, Sep 5, priced at $253 found 2 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $231
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $231

Find the cheapest month to fly from Indianapolis (IND) to St. Louis (STL)

September is typically the cheapest month to fly

From $213 - $625 per traveler.

What you need to know for your flight from Indianapolis Intl. to Lambert-St. Louis Intl.

Indianapolis (IND) to St. Louis (STL) at a glance

Travel from Indianapolis (IND) to St. Louis (STL) with a choice of airlines on this short domestic route. Whether you’re looking for cheap flights from Indianapolis or prefer a full-service experience, you can compare various options to find the best itinerary that matches your budget and schedule. Discover key details for flights departing from Indianapolis International Airport (IND) to Lambert-St. Louis International Airport (STL) as you plan your visit to explore the iconic sights and vibrant neighborhoods of St. Louis.

  • Fastest (typical) flight duration: around 2h 45m in-flight, plus roughly 1 hour layover with one stop
  • Route distance: roughly 250 miles (400 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $100–$355, depending on seasonality and how far ahead you book

Flights from Indianapolis International Airport (IND) to Lambert-St. Louis International Airport (STL)

Recent traveler bookings reveal the top airlines flying from Indianapolis to St. Louis, primarily favored for their one-stop services. Common layover points include O'Hare International Airport (ORD) with an average layover of about 1 hour and 15 minutes, Hartsfield-Jackson Atlanta International Airport (ATL) also around 1 hour and 15 minutes, and Detroit Metropolitan Wayne County Airport (DTW) with a shorter layover of approximately 55 minutes. This variety allows you to compare price, total travel time, and cabin class to find your ideal itinerary.

  • American Airlines: This full-service airline provides one-stop travel options, with one-way ticket prices generally between $115 and $380. It represents about 37% of departures on this route, featuring an in-flight duration of 2 hours and 45 minutes, leading to a total travel time of around 4 hours, including layover.
  • United: As another full-service option, United offers one-stop services with one-way fares usually ranging from $120 to $340. It accounts for approximately 25% of all departures on this route. The flight time is also 2 hours and 45 minutes, totaling about 4 hours for the entire journey, including layover.
  • Southwest Airlines: Known for its budget-friendly fares, Southwest Airlines provides one-stop service with prices typically falling between $110 and $355. It covers around 20% of departures on this route, with an in-flight duration of 2 hours and 45 minutes, leading to a complete travel time of roughly 4 hours, factoring in the layover.
  • Delta: This full-service carrier offers one-stop service with one-way fares generally priced from $100 to $315. Delta comprises about 19% of all departures on this route, and its flights share an in-air time of 2 hours and 45 minutes, resulting in a total journey time of approximately 4 hours, including layover.

Alternative routes from Indianapolis (IND) to St. Louis (STL)

  • Indianapolis to St. Louis (IND-SUS): Spirit of St. Louis Airport (SUS) is located approximately 16 miles from Lambert-St. Louis International Airport (STL).
  • Indianapolis to St. Louis (IND-CPS): St. Louis Downtown Airport (CPS) is roughly 16 miles distant from Lambert-St. Louis International Airport (STL).

How to find the best prices for flights from Indianapolis (IND) to St. Louis (STL)

Getting some of the best deals on flights from Indianapolis to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book within two weeks. Afternoon departures (12 PM to 6 PM) generally offer lower prices, while morning flights (5 AM to 12 PM) are more popular. Additionally, flying on Tuesday often results in cheaper rates, despite Monday being the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Indianapolis International Airport

St. Louis welcomes travelers from Indianapolis with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles away on foot, providing easy access to public transportation.

Frequently asked questions

How much does a flight from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $92 and cheap return flights from $184 Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights typically cost between $168 and $441, and return flights often range between $287 and $811. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
June is the cheapest month to fly from Indianapolis to St. Louis, with average return fares around $256. This is about 32% lower than the average price throughout the year, as demand tends to be lower during the summer. Other budget-friendly months include February and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter IND to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Alaska Airlines is one of the cheapest airlines offering connecting flights from Indianapolis Intl. (IND) to Lambert-St. Louis Intl. (STL), with round-trip tickets starting from around $348. American Airlines also offers connecting flights with a layover in Dallas-Fort Worth Intl. (DFW) starting from around $421. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
When flying from Indianapolis (IND) to St. Louis (STL), June and September are your best bets. June offers average return flights around $256, making it an affordable option. Both months are popular for travel, providing a good mix of favorable prices and flight availability.*Prices based on flights available on Expedia in the last year.
How many flights per day from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You can find approximately 1 nonstop flights per day from Indianapolis Intl. (IND) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
What is the earliest flight from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Indianapolis, IN (IND) to St. Louis, MO (STL) typically departs at around 5:00 AM local time, operated by American Airlines and Southern Airways Express. This is a seasonal service active in June, and an early flight allows you to maximize your time in St. Louis. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Indianapolis (IND) to St. Louis (STL) are in the early morning, from 6am to 9am. About 26% of passengers prefer this time window. Many major carriers, including Southwest Airlines, Delta, and American Airlines, offer flights during this window. This timing works well because it allows you to maximize your day in St. Louis upon arrival.
How long does it take to fly from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying nonstop from IND to STL takes around 1 hour, with the route covering approximately 228 miles. Flights with a layover typically take 5 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You can fly first class between IND and STL. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How do I earn miles on a Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Indianapolis Intl. (IND)?
From Indianapolis Intl. (IND), you can fly into Lambert-St. Louis Intl. (STL) to reach St. Louis. Some flights may connect through major hubs like O'Hare Intl. (ORD), William P. Hobby (HOU), Baltimore Washington Intl. Thurgood Marshall (BWI) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Indianapolis, IN (IND-Indianapolis Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Indianapolis Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$184
Distance
227 mi

Book with confidence

Indianapolis to St. Louis Flights

The cheapest times to fly from Indianapolis to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Indianapolis to St. Louis are during the month of October. You can find some of the cheapest flights from Indianapolis to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Indianapolis to St. Louis

Sunday is one of the best days to book for cheap flights from Indianapolis to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Indianapolis to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Indianapolis to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $92 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Indianapolis to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Indianapolis to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Indianapolis to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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