$288 Cheap Flights from Decatur (DEC) to Boise (BOI)

View $288 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from Decatur, IL (DEC) to Boise Airport (BOI)

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Cheap Flights from Decatur to Boise (DEC-BOI)

Prices were available within the past 7 days and start at $288 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Decatur Airport (DEC) to Boise Airport (BOI) cost?
Get a cheap one-way flight from $288 or cheap return flight from Decatur Airport (DEC) to Boise Airport (BOI) 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 Decatur Airport (DEC) to Boise Airport (BOI)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between DEC and BOI. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Decatur Airport (DEC) to Boise Airport (BOI)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from DEC to BOI. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Decatur Airport (DEC) to Boise Airport (BOI)?
You'll need to book a flight with a layover when traveling from Decatur Airport (DEC) to Boise Airport (BOI). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from DEC to BOI?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Decatur Airport (DEC) to Boise Airport (BOI)?
Choose a flight from Decatur Airport (DEC) to Boise Airport (BOI) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Decatur Airport (DEC) to Boise Airport (BOI) last-minute?
Last-minute bookings from DEC to BOI are usually more expensive. To secure the best rates, start looking for flights well ahead of time. That being said, if you're flexible with your travel plans, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a DEC to BOI flight and hotel package?
Compared with arranging flights and hotels separately, booking a DEC to BOI flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place will take the hassle out of travel planning. Just pick your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Decatur Airport (DEC) to Boise Airport (BOI)?
Typically, you're able to cancel or reschedule your DEC to BOI flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Decatur
Destination airport
Boise
Distance
1427 mi

Book with confidence

Decatur to Boise Flights

The cheapest times to fly from Decatur to Boise

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

 

The best time to book a flight from Decatur to Boise

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

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 Decatur to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $288 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 Decatur to Boise 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 Decatur to Boise 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.

 

Decatur to Boise Flights

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*Available to One Key members.