Cheap Flights from St. Louis (STL) to Indiana (IDI)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart) cost?
Snag a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)?
is the most affordable month to fly from STL to IDI. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to IDI flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)?
You'll have to hop on a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from STL to IDI?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart) last-minute?
Booking your plane ticket from STL to IDI just before your trip is typically more expensive. But if you're flexible with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a STL to IDI flight and hotel package?
Opting for a STL to IDI flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our wide range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Indiana, PA (IDI-Indiana County - Jimmy Stewart)?
You can usually reschedule or cancel your STL to IDI flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Indiana County - Jimmy Stewart
Distance
612 mi

Book with confidence

Book with confidence

St. Louis to Indiana Flights

The cheapest times to fly from St. Louis to Indiana

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 St. Louis to Indiana are during the month of . You can find some of the cheapest flights from St. Louis to Indiana with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Indiana: 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 St. Louis to Indiana

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 St. Louis to Indiana in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 St. Louis to Indiana 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 St. Louis to Indiana 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.

 

St. Louis to Indiana Flights

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*Available to One Key members.