Cheap flights from St. Louis to Indianapolis from $92
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 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Indianapolis
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Delta flights from St. Louis to Indianapolis
Our best Delta deals on St. Louis to Indianapolis flight tickets
United Airlines flights from St. Louis to Indianapolis
Our best United Airlines deals on St. Louis to Indianapolis flight tickets
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 53% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Indianapolis?
Frontier, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Indianapolis
What airlines fly to Indianapolis?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Indianapolis from St. Louis according to our data. American Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Indianapolis. Keep in mind that there are 5 different airlines that fly to Indianapolis on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Indianapolis
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
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 3h 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?
The number of operators available for flights from Lambert-St Louis Airport to Indianapolis Airport is 2 as of April 2025.
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?
Based on momondo bookings for flights between St. Louis and Indianapolis, the leading airline is American Airlines, making up 65% of the total bookings. Other popular airlines include Delta with 35%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $216 | Free Cancellation | Rating 8.0 7,920 reviews | |||
| PriceFrom $226 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near Indianapolis?
Book flights to Indianapolis if you plan to visit one of these locationsWhy 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.