Cheap Flights from Idaho Falls (IDA) to Decatur (DEC)

Popular airlines from Idaho Falls Regional Airport (IDA) to Decatur, IL (DEC)

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Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC) cost?
Get a cheap one-way flight or cheap return flight from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC)?
is the least expensive month to fly from IDA to DEC. Avoiding peak travel times is often the key to finding better deals on flights.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from IDA to DEC. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC)?
You'll need to catch a flight with a layover when traveling from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from IDA to DEC?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC)?
To reach Decatur Airport (DEC) without delays, book a flight that leaves from Idaho Falls Regional Airport (IDA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC) last-minute?
Waiting until right before your break to book a flight from IDA to DEC often results in higher prices. While you might find some last-minute offers, they're not always guaranteed. Be flexible with your travel plans to maximize your chances of scoring a bargain.
Is it cheaper to book an IDA to DEC flight and hotel package?
You'll generally save money by booking an IDA to DEC flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred accommodations and flights, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Decatur Airport (DEC)?
If you booked your IDA to DEC flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Decatur
Distance
1219 mi

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Idaho Falls to Decatur Flights

The cheapest times to fly from Idaho Falls to Decatur

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

 

The best time to book a flight from Idaho Falls to Decatur

Sunday is one of the best days to book for cheap flights from Idaho Falls to Decatur: 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 Idaho Falls to Decatur

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 Idaho Falls to Decatur in 2026. 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 Idaho Falls to Decatur 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 Idaho Falls to Decatur 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.

 

Idaho Falls to Decatur Flights

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*Available to One Key members.