$363 Cheap Flights from Decatur (DEC) to Kalispell (FCA)

View $363 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Decatur, IL (DEC) to Glacier Park Intl. Airport (FCA)

Cheap Flights from Decatur to Kalispell (DEC-FCA)

Prices were available within the past 7 days and start at $363 for one-way flights and $440 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 1 - Thu, Oct 9
DEC
Decatur
FCA
Kalispell
$440 Roundtrip, found 3 days ago
$440
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 1 from Decatur to Kalispell, returning Thu, Oct 9, priced at $440 found 3 days ago
United
Wed, Oct 1 - Sat, Oct 11
DEC
Decatur
FCA
Kalispell
$445 Roundtrip, found 3 days ago
$445
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 1 from Decatur to Kalispell, returning Sat, Oct 11, priced at $445 found 3 days ago
United
Wed, Oct 1 - Wed, Oct 8
DEC
Decatur
FCA
Kalispell
$481 Roundtrip, found 3 days ago
$481
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 1 from Decatur to Kalispell, returning Wed, Oct 8, priced at $481 found 3 days ago
United
Sat, Oct 4 - Wed, Oct 8
DEC
Decatur
FCA
Kalispell
$486 Roundtrip, found 3 days ago
$486
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Decatur to Kalispell, returning Wed, Oct 8, priced at $486 found 3 days ago
United
Thu, Oct 2 - Thu, Oct 9
DEC
Decatur
FCA
Kalispell
$496 Roundtrip, found 3 days ago
$496
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 2 from Decatur to Kalispell, returning Thu, Oct 9, priced at $496 found 3 days ago
United
Mon, Oct 6 - Fri, Oct 10
DEC
Decatur
FCA
Kalispell
$497 Roundtrip, found 3 days ago
$497
Roundtrip
found 3 days ago
Select United flight, departing Mon, Oct 6 from Decatur to Kalispell, returning Fri, Oct 10, priced at $497 found 3 days ago
United
Thu, Oct 2 - Sat, Oct 11
DEC
Decatur
FCA
Kalispell
$506 Roundtrip, found 3 days ago
$506
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 2 from Decatur to Kalispell, returning Sat, Oct 11, priced at $506 found 3 days ago
United
Wed, Oct 1 - Tue, Oct 7
DEC
Decatur
FCA
Kalispell
$526 Roundtrip, found 3 days ago
$526
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 1 from Decatur to Kalispell, returning Tue, Oct 7, priced at $526 found 3 days ago
United
Thu, Oct 2 - Wed, Oct 8
DEC
Decatur
FCA
Kalispell
$537 Roundtrip, found 3 days ago
$537
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 2 from Decatur to Kalispell, returning Wed, Oct 8, priced at $537 found 3 days ago
United
Sun, Oct 5 - Thu, Oct 9
DEC
Decatur
FCA
Kalispell
$555 Roundtrip, found 3 days ago
$555
Roundtrip
found 3 days ago
Select United flight, departing Sun, Oct 5 from Decatur to Kalispell, returning Thu, Oct 9, priced at $555 found 3 days ago
United
Sun, Oct 5 - Fri, Oct 10
DEC
Decatur
FCA
Kalispell
$559 Roundtrip, found 3 days ago
$559
Roundtrip
found 3 days ago
Select United flight, departing Sun, Oct 5 from Decatur to Kalispell, returning Fri, Oct 10, priced at $559 found 3 days ago
Flights from Decatur (DEC) to Kalispell (FCA)
Origin airport
Decatur
Destination airport
Glacier Park Intl.
Roundtrip price
$440
Distance
1380 mi

Decatur to Kalispell Flights

The cheapest times to fly from Decatur to Kalispell

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

 

The best time to book a flight from Decatur to Kalispell

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

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 Kalispell in 2025. You can also book with separate airlines for your outbound and return journeys, from $363 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 Kalispell 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 Kalispell 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.

 

Frequently asked questions

How much does a flight from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA) cost?
Snag a cheap one-way flight from $363 or cheap return flight from $440 from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA) 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 Glacier Park Intl. Airport (FCA)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between DEC and FCA. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA)?
To find the cheapest airline that'll fly you from DEC to FCA, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA)?
You'll need to take a flight with a layover if you're traveling from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA). There are no daily direct flights 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 FCA?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA)?
To arrive at Glacier Park Intl. Airport (FCA) without delays, book a flight that leaves from Decatur Airport (DEC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Glacier Park Intl. Airport (FCA) last-minute?
Last-minute bookings from DEC to FCA are typically more expensive. To lock in the best rates, start searching for flights well in advance. That being said, if your travel plans are flexible, you may score a cheap ticket right before you leave.
Is it cheaper to book a DEC to FCA flight and hotel package?
Compared with arranging hotels and flights separately, booking a DEC to FCA flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the hassle out of travel planning. Just pick your flights and select from our extensive range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Decatur Airport (DEC) to Glacier Park Intl. Airport (FCA)?
You can usually cancel or reschedule your DEC to FCA flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to 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.

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*Available to One Key members.