$313 Cheap Flights from Birmingham (BHM) to Decatur (DEC)

View $313 flight on Sun, Nov 23, 2025Opens in a new window

Popular airlines from Birmingham International Airport (BHM) to Decatur, IL (DEC)

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Cheap Flights from Birmingham to Decatur (BHM-DEC)

Prices were available within the past 7 days and start at $313 for one-way flights and $367 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Nov 20 - Sun, Nov 30
BHM
Birmingham
DEC
Decatur
$367 Roundtrip, found 23 hours ago
$367
Roundtrip
found 23 hours ago
Select United flight, departing Thu, Nov 20 from Birmingham to Decatur, returning Sun, Nov 30, priced at $367 found 23 hours ago
United
Wed, Nov 26 - Sun, Nov 30
BHM
Birmingham
DEC
Decatur
$435 Roundtrip, found 23 hours ago
$435
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Nov 26 from Birmingham to Decatur, returning Sun, Nov 30, priced at $435 found 23 hours ago
United
Sun, Nov 23 - Sun, Nov 30
BHM
Birmingham
DEC
Decatur
$451 Roundtrip, found 23 hours ago
$451
Roundtrip
found 23 hours ago
Select United flight, departing Sun, Nov 23 from Birmingham to Decatur, returning Sun, Nov 30, priced at $451 found 23 hours ago
United
Sat, Nov 22 - Sun, Nov 30
BHM
Birmingham
DEC
Decatur
$462 Roundtrip, found 23 hours ago
$462
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Nov 22 from Birmingham to Decatur, returning Sun, Nov 30, priced at $462 found 23 hours ago
United
Thu, Nov 20 - Wed, Dec 3
BHM
Birmingham
DEC
Decatur
$480 Roundtrip, found 23 hours ago
$480
Roundtrip
found 23 hours ago
Select United flight, departing Thu, Nov 20 from Birmingham to Decatur, returning Wed, Dec 3, priced at $480 found 23 hours ago
United
Thu, Nov 20 - Thu, Nov 27
BHM
Birmingham
DEC
Decatur
$511 Roundtrip, found 23 hours ago
$511
Roundtrip
found 23 hours ago
Select United flight, departing Thu, Nov 20 from Birmingham to Decatur, returning Thu, Nov 27, priced at $511 found 23 hours ago
United
Sun, Nov 23 - Sun, Nov 30
BHM
Birmingham
DEC
Decatur
$532 Roundtrip, found 23 hours ago
$532
Roundtrip
found 23 hours ago
Select United flight, departing Sun, Nov 23 from Birmingham to Decatur, returning Sun, Nov 30, priced at $532 found 23 hours ago
United
Wed, Nov 26 - Wed, Dec 3
BHM
Birmingham
DEC
Decatur
$548 Roundtrip, found 23 hours ago
$548
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Nov 26 from Birmingham to Decatur, returning Wed, Dec 3, priced at $548 found 23 hours ago
United
Thu, Nov 20 - Fri, Nov 28
BHM
Birmingham
DEC
Decatur
$561 Roundtrip, found 23 hours ago
$561
Roundtrip
found 23 hours ago
Select United flight, departing Thu, Nov 20 from Birmingham to Decatur, returning Fri, Nov 28, priced at $561 found 23 hours ago
United
Sat, Nov 22 - Wed, Dec 3
BHM
Birmingham
DEC
Decatur
$575 Roundtrip, found 23 hours ago
$575
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Nov 22 from Birmingham to Decatur, returning Wed, Dec 3, priced at $575 found 23 hours ago

Frequently asked questions

How much does a flight from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC) cost?
Snag a cheap one-way flight from $313 or cheap return flight from $367 from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC) 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 Birmingham Intl. Airport (BHM) to Decatur Airport (DEC)?
Traveling in November may help you find better deals, as it's the cheapest month for flights between BHM and DEC. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BHM to DEC flight.
How many flights per day from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC)?
Nonstop flights from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BHM to DEC?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, 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 Birmingham Intl. Airport (BHM) to Decatur Airport (DEC)?
To reach Decatur Airport (DEC) on schedule, select a flight that leaves Birmingham Intl. Airport (BHM) before 3 PM. The chance 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 Birmingham Intl. Airport (BHM) to Decatur Airport (DEC) last-minute?
Last-minute fares from BHM to DEC are generally more expensive. To secure the lowest rates, start searching for flights ahead of time. That said, if you're flexible with your travel dates, you may score a cheap ticket just before your departure.
Is it cheaper to book a BHM to DEC flight and hotel package?
Booking a BHM to DEC flight and hotel package is usually 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 flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Birmingham Intl. Airport (BHM) to Decatur Airport (DEC)?
If you booked your BHM to DEC flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Birmingham Intl.
Destination airport
Decatur
Airlines serving
United
Roundtrip price
$367
Distance
448 mi

Book with confidence

Book with confidence

Birmingham to Decatur Flights

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

 

The best time to book a flight from Birmingham to Decatur

Sunday is one of the best days to book for cheap flights from Birmingham 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 Birmingham 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 Birmingham to Decatur in 2025. You can also book with separate airlines for your outbound and return journeys, from $313 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 Birmingham 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 Birmingham 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.

 

Birmingham to Decatur Flights

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*Available to One Key members.