$253 Cheap Flights from Houston (IAH) to Decatur (DEC)

View $253 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Decatur, IL (DEC)

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Cheap Flights from Houston to Decatur (IAH-DEC)

Prices were available within the past 7 days and start at $253 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Mar 14 - Tue, Mar 17
IAH
Houston
DEC
Decatur
$244 Roundtrip, found 4 days ago
$244
Roundtrip
found 4 days ago
Select United flight, departing Sat, Mar 14 from Houston to Decatur, returning Tue, Mar 17, priced at $244 found 4 days ago
United
Thu, Nov 13 - Mon, Nov 17
IAH
Houston
DEC
Decatur
$274 Roundtrip, found 2 days ago
$274
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 13 from Houston to Decatur, returning Mon, Nov 17, priced at $274 found 2 days ago
United
Thu, Nov 20 - Mon, Nov 24
IAH
Houston
DEC
Decatur
$311 Roundtrip, found 2 days ago
$311
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 20 from Houston to Decatur, returning Mon, Nov 24, priced at $311 found 2 days ago
United
Sat, Mar 14 - Tue, Mar 17
IAH
Houston
DEC
Decatur
$313 Roundtrip, found 4 days ago
$313
Roundtrip
found 4 days ago
Select United flight, departing Sat, Mar 14 from Houston to Decatur, returning Tue, Mar 17, priced at $313 found 4 days ago
United
Wed, Mar 11 - Mon, Mar 23
IAH
Houston
DEC
Decatur
$314 Roundtrip, found 3 days ago
$314
Roundtrip
found 3 days ago
Select United flight, departing Wed, Mar 11 from Houston to Decatur, returning Mon, Mar 23, priced at $314 found 3 days ago
United
Wed, Nov 19 - Sat, Nov 22
IAH
Houston
DEC
Decatur
$329 Roundtrip, found 2 days ago
$329
Roundtrip
found 2 days ago
Select United flight, departing Wed, Nov 19 from Houston to Decatur, returning Sat, Nov 22, priced at $329 found 2 days ago
United
Thu, Nov 13 - Mon, Nov 17
IAH
Houston
DEC
Decatur
$344 Roundtrip, found 2 days ago
$344
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 13 from Houston to Decatur, returning Mon, Nov 17, priced at $344 found 2 days ago
United
Fri, Nov 14 - Sun, Nov 16
IAH
Houston
DEC
Decatur
$345 Roundtrip, found 7 hours ago
$345
Roundtrip
found 7 hours ago
Select United flight, departing Fri, Nov 14 from Houston to Decatur, returning Sun, Nov 16, priced at $345 found 7 hours ago
United
Wed, Dec 24 - Thu, Jan 1
IAH
Houston
DEC
Decatur
$349 Roundtrip, found 6 days ago
$349
Roundtrip
found 6 days ago
Select United flight, departing Wed, Dec 24 from Houston to Decatur, returning Thu, Jan 1, priced at $349 found 6 days ago
United
Tue, Mar 3 - Mon, Mar 16
IAH
Houston
DEC
Decatur
$355 Roundtrip, found 3 days ago
$355
Roundtrip
found 3 days ago
Select United flight, departing Tue, Mar 3 from Houston to Decatur, returning Mon, Mar 16, priced at $355 found 3 days ago

Alternative airports near Decatur

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Decatur, IL DEC. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $359
DEC
Decatur, IL
CheapestClosest
Average driving time to city center8 min
Flights from $359

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC) cost?
Lock in a cheap one-way flight from $253 or cheap return flight from $244 from George Bush Intercontinental Airport (IAH) 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 George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC)?
March is the most affordable month to fly from IAH to DEC. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAH to DEC flight.
How many flights per day from George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC)?
You'll have to hop on a flight with a layover if you're traveling from George Bush Intercontinental Airport (IAH) 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 discover the best option for your trip.
What day of the week has the most flights from IAH to DEC?
You'll typically 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 George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC)?
To land at Decatur Airport (DEC) on schedule, opt for a flight that takes off from George Bush Intercontinental Airport (IAH) 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 George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC) last-minute?
Holding off until just before your trip to book a ticket from IAH to DEC generally means paying more. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel schedule open for a better chance of landing a bargain.
Is it cheaper to book an IAH to DEC flight and hotel package?
Opting for an IAH to DEC flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our impressive range of accommodations and then add activities, flights 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 George Bush Intercontinental Airport (IAH) to Decatur Airport (DEC)?
If you booked your IAH to DEC flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Decatur
Roundtrip price
$244
Distance
772 mi

Book with confidence

Houston to Decatur Flights

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

 

The best time to book a flight from Houston to Decatur

Sunday is one of the best days to book for cheap flights from Houston 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 Houston 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 Houston to Decatur in 2025. You can also book with separate airlines for your outbound and return journeys, from $253 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 Houston 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 Houston 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.

 

Houston to Decatur Flights

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