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Decatur

$388+ Cheap flights from Austin to Decatur, IL (AUS - DEC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — DEC
Apr 13 — Apr 201
Mon 4/13
Mon 4/20
1 adult, Economy
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Cheap flight deals from Austin to Decatur

Cheapest flights from Austin to Decatur
Explore the most affordable flight options available from Austin to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 14, 2026.

This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/261:10 pm
AUS
-
DEC
1 stop4h 43m
United Airlines
Mon 3/309:52 am
DEC
-
AUS
1 stop6h 24m
United Airlines
Deal found 3/11$388
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:30 am
AUS
-
DEC
2 stops12h 27m
United Airlines
Sat 5/27:25 pm
DEC
-
AUS
1 stop16h 56m
United Airlines
Deal found 3/9$424
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:45 pm
AUS
-
DEC
1 stop19h 09m
United Airlines
Sat 5/97:25 pm
DEC
-
AUS
1 stop14h 45m
United Airlines
Deal found 3/13$454
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/251:10 pm
AUS
-
DEC
1 stop4h 43m
United Airlines
Sun 3/299:52 am
DEC
-
AUS
1 stop26h 28m
United Airlines
Deal found 3/10$489

Find flight deals from Austin to Decatur

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Decatur (DEC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 14, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$388
(United Airlines)
Provider with most accurate pricing for Austin Bergstrom-Decatur Arpt flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-Decatur Arpt flights.
Search Deals
From Austin Bergstrom to Decatur Arpt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Decatur that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 14, 2026.
Use the filters below to find and compare flights from Austin to Decatur that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AustinDecatur

AUS - DEC

AUSDEC

Austin Bergstrom

Thu 3/26

1:10 pm-5:53 pm

1 stop4h 43m

Decatur Arpt

Mon 3/30

9:52 am-4:16 pm

1 stop6h 24m

$388

AustinDecatur

AUS - DEC

AUSDEC

Austin Bergstrom

Wed 4/29

5:30 am-5:57 pm

2 stops12h 27m

Decatur Arpt

Sat 5/2

7:25 pm-12:21 pm

1 stop16h 56m

$424

AustinDecatur

AUS - DEC

AUSDEC

Austin Bergstrom

Fri 5/8

3:40 pm-12:54 pm

1 stop21h 14m

Decatur Arpt

Sat 5/9

7:25 pm-12:21 pm

1 stop16h 56m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Austin-Decatur, Illinois flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Austin-Decatur, Illinois flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Austin-Decatur, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-Decatur, Illinois flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-Decatur, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Austin to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to Decatur

What is the cheapest month to book a flight from Austin to Decatur, Illinois?

Currently, August is the cheapest month in which you can book a flight from Austin to Decatur, Illinois (average of $166). Flying from Austin to Decatur, Illinois in October is currently the most expensive (average of $333). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Austin to Decatur. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Austin to Decatur, Illinois?

    Airlines like United Airlines fly from Austin to Decatur, Illinois in about 4h 43m. The time it takes to get you to your destination can typically vary by up to . The distance from Austin to Decatur, Illinois is about 830 mi.

  • Can I find deals for flights from Austin to Decatur that include hotel bookings?

    Yes. In addition to deals on Austin to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Decatur?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Decatur.

  • Can I find deals for business class flights from Austin to Decatur?

    Yes. Cheapflights offers flight deals from Austin to Decatur by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to Decatur, Illinois?

    Currently, August is the cheapest month in which you can book a flight from Austin to Decatur, Illinois (average of $166). Flying from Austin to Decatur, Illinois in October is currently the most expensive (average of $333). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Mattoon
Effingham

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