$234 Cheap Flights from San Antonio (SAT) to Decatur (DEC)

View $234 flight on Fri, Oct 24, 2025Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Decatur, IL (DEC)

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Cheap Flights from San Antonio to Decatur (SAT-DEC)

Prices were available within the past 7 days and start at $234 for one-way flights and $314 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Oct 23 - Sat, Oct 25
SAT
San Antonio
DEC
Decatur
$314 Roundtrip, found 3 days ago
$314
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Sat, Oct 25, priced at $314 found 3 days ago
United
Thu, Oct 23 - Wed, Oct 29
SAT
San Antonio
DEC
Decatur
$324 Roundtrip, found 3 days ago
$324
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Wed, Oct 29, priced at $324 found 3 days ago
United
Wed, Oct 22 - Sat, Oct 25
SAT
San Antonio
DEC
Decatur
$400 Roundtrip, found 3 days ago
$400
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 22 from San Antonio to Decatur, returning Sat, Oct 25, priced at $400 found 3 days ago
United
Thu, Oct 23 - Thu, Oct 30
SAT
San Antonio
DEC
Decatur
$410 Roundtrip, found 3 days ago
$410
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Thu, Oct 30, priced at $410 found 3 days ago
United
Thu, Oct 23 - Tue, Oct 28
SAT
San Antonio
DEC
Decatur
$410 Roundtrip, found 3 days ago
$410
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Tue, Oct 28, priced at $410 found 3 days ago
United
Tue, Oct 21 - Wed, Oct 29
SAT
San Antonio
DEC
Decatur
$420 Roundtrip, found 3 days ago
$420
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from San Antonio to Decatur, returning Wed, Oct 29, priced at $420 found 3 days ago
United
Tue, Oct 21 - Sat, Oct 25
SAT
San Antonio
DEC
Decatur
$426 Roundtrip, found 3 days ago
$426
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from San Antonio to Decatur, returning Sat, Oct 25, priced at $426 found 3 days ago
United
Thu, Oct 23 - Mon, Oct 27
SAT
San Antonio
DEC
Decatur
$431 Roundtrip, found 3 days ago
$431
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Mon, Oct 27, priced at $431 found 3 days ago
United
Sat, Oct 25 - Wed, Oct 29
SAT
San Antonio
DEC
Decatur
$439 Roundtrip, found 3 days ago
$439
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 25 from San Antonio to Decatur, returning Wed, Oct 29, priced at $439 found 3 days ago
United
Thu, Oct 23 - Sat, Nov 1
SAT
San Antonio
DEC
Decatur
$444 Roundtrip, found 3 days ago
$444
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from San Antonio to Decatur, returning Sat, Nov 1, priced at $444 found 3 days ago

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC) cost?
Lock in a cheap one-way flight from $234 or cheap return flight from $314 from San Antonio Intl. Airport (SAT) 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 San Antonio Intl. Airport (SAT) to Decatur Airport (DEC)?
The cheapest month to fly from SAT to DEC is October, when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SAT to DEC. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC)?
You'll need to hop on a flight with a layover if you're traveling from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SAT to DEC?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC)?
To avoid possible delays on the San Antonio Intl. Airport (SAT) to Decatur Airport (DEC) route, aim to travel 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 San Antonio Intl. Airport (SAT) to Decatur Airport (DEC) last-minute?
Last-minute bookings from SAT to DEC are typically more expensive. For the best prices, start looking for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a SAT to DEC flight and hotel package?
You'll typically save money by booking a SAT to DEC flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal accommodations and flights, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Decatur Airport (DEC)?
Typically, you're able to cancel or reschedule your SAT to DEC flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you want more information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
San Antonio Intl.
Destination airport
Decatur
Roundtrip price
$314
Distance
895 mi

Book with confidence

Book with confidence

San Antonio to Decatur Flights

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

 

The best time to book a flight from San Antonio to Decatur

Sunday is one of the best days to book for cheap flights from San Antonio 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 San Antonio 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 San Antonio to Decatur in 2025. You can also book with separate airlines for your outbound and return journeys, from $234 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 San Antonio 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 San Antonio 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.

 

San Antonio to Decatur Flights

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*Available to One Key members.