$285 Cheap Flights from Chattanooga (CHA) to Decatur (DEC)

View $285 flight on Fri, Dec 26, 2025Opens in a new window

Popular airlines from Chattanooga Metropolitan Airport (CHA) to Decatur, IL (DEC)

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Cheap Flights from Chattanooga to Decatur (CHA-DEC)

Prices were available within the past 7 days and start at $285 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jan 8 - Mon, Jan 12
CHA
Chattanooga
DEC
Decatur
$244 Roundtrip, found 5 days ago
$244
Roundtrip
found 5 days ago
Select United flight, departing Thu, Jan 8 from Chattanooga to Decatur, returning Mon, Jan 12, priced at $244 found 5 days ago
United
Tue, Dec 30 - Sun, Jan 4
CHA
Chattanooga
DEC
Decatur
$277 Roundtrip, found 6 days ago
$277
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 30 from Chattanooga to Decatur, returning Sun, Jan 4, priced at $277 found 6 days ago
United
Wed, Dec 24 - Thu, Dec 25
CHA
Chattanooga
DEC
Decatur
$294 Roundtrip, found 5 days ago
$294
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 24 from Chattanooga to Decatur, returning Thu, Dec 25, priced at $294 found 5 days ago
United
Wed, Jan 7 - Mon, Jan 12
CHA
Chattanooga
DEC
Decatur
$304 Roundtrip, found 5 days ago
$304
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jan 7 from Chattanooga to Decatur, returning Mon, Jan 12, priced at $304 found 5 days ago
United
Tue, Jan 6 - Mon, Jan 12
CHA
Chattanooga
DEC
Decatur
$309 Roundtrip, found 5 days ago
$309
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jan 6 from Chattanooga to Decatur, returning Mon, Jan 12, priced at $309 found 5 days ago
United
Fri, Dec 26 - Mon, Dec 29
CHA
Chattanooga
DEC
Decatur
$314 Roundtrip, found 5 days ago
$314
Roundtrip
found 5 days ago
Select United flight, departing Fri, Dec 26 from Chattanooga to Decatur, returning Mon, Dec 29, priced at $314 found 5 days ago
United
Sun, Dec 21 - Mon, Dec 29
CHA
Chattanooga
DEC
Decatur
$334 Roundtrip, found 5 days ago
$334
Roundtrip
found 5 days ago
Select United flight, departing Sun, Dec 21 from Chattanooga to Decatur, returning Mon, Dec 29, priced at $334 found 5 days ago
United
Tue, Dec 30 - Sun, Jan 4
CHA
Chattanooga
DEC
Decatur
$337 Roundtrip, found 6 days ago
$337
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 30 from Chattanooga to Decatur, returning Sun, Jan 4, priced at $337 found 6 days ago
United
Tue, Dec 23 - Fri, Dec 26
CHA
Chattanooga
DEC
Decatur
$344 Roundtrip, found 5 days ago
$344
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 23 from Chattanooga to Decatur, returning Fri, Dec 26, priced at $344 found 5 days ago
United
Wed, Jan 7 - Tue, Jan 13
CHA
Chattanooga
DEC
Decatur
$350 Roundtrip, found 5 days ago
$350
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jan 7 from Chattanooga to Decatur, returning Tue, Jan 13, priced at $350 found 5 days ago

Frequently asked questions

How much does a flight from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC) cost?
Grab a cheap one-way flight from $285 or cheap return flight from $244 from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC)?
Traveling in January may help you find better deals, as it's the cheapest month for flights between CHA and DEC. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC)?
To find the cheapest airline flying from CHA to DEC, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC)?
There are no daily direct flights from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from CHA to DEC?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, carrier 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 Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC)?
To avoid possible delays on the Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC) route, aim to fly before 3 PM. Later flights have a 22% higher chance of cancellation.**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 Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC) last-minute?
Last-minute fares from CHA to DEC are typically more expensive. For the best rates, start looking for flights well in advance. That being said, if your travel plans are flexible, it's possible to score a cheap fare just before your departure.
Is it cheaper to book a CHA to DEC flight and hotel package?
Compared with arranging hotels and flights separately, booking a CHA to DEC flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Just secure your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Chattanooga Metropolitan Airport (CHA) to Decatur Airport (DEC)?
It's generally possible to reschedule or cancel your CHA to DEC flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Chattanooga Metropolitan
Destination airport
Decatur
Roundtrip price
$244
Distance
388 mi

Book with confidence

Chattanooga to Decatur Flights

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

 

The best time to book a flight from Chattanooga to Decatur

Sunday is one of the best days to book for cheap flights from Chattanooga 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 Chattanooga 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 Chattanooga to Decatur in 2026. You can also book with separate airlines for your outbound and return journeys, from $285 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 Chattanooga 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 Chattanooga 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.

 

Chattanooga to Decatur Flights

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