$370+ Cheap flights from Harrisburg to Decatur, IL (MDT - 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — DEC
Jan 3 — Jan 101
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Harrisburg to Decatur
Cheapest flights from Harrisburg to DecaturExplore the most affordable flight options available from Harrisburg to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.
Explore the most affordable flight options available from Harrisburg to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/316:15 amMDT - DEC
2 stops36h 44mUnited Airlines
Wed 1/79:49 amDEC - MDT
1 stop5h 44mUnited Airlines
Deal found 12/2![United Airlines logo]()
$498
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/196:30 amMDT - DEC
1 stop27h 35mUnited Airlines
Tue 12/237:09 pmDEC - MDT
1 stop3h 58mUnited Airlines
Deal found 12/4![United Airlines logo]()
$511
Find flight deals from Harrisburg to Decatur
Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) 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 December 4, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 1 star |
Round-trip from | $370 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Harrisburg 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 December 4, 2025.
Use the filters below to find and compare flights from Harrisburg to Decatur that are best for you.
Fly from
Harrisburg
Fly to
Decatur
Route
Depart
Return
Price
HarrisburgDecatur
MDT - DEC
MDTDEC
Harrisburg
Sat 1/17
10:48 am-9:05 am
1 stop23h 17m
Decatur Arpt
Wed 1/21
9:49 am-4:34 pm
1 stop5h 45m
$370
HarrisburgDecatur
MDT - DEC
MDTDEC
Harrisburg
Wed 12/31
6:15 am-5:59 pm
2 stops36h 44m
Decatur Arpt
Wed 1/7
9:49 am-4:33 pm
1 stop5h 44m
$498
HarrisburgDecatur
MDT - DEC
MDTDEC
Harrisburg
Fri 12/19
6:30 am-9:05 am
1 stop27h 35m
Decatur Arpt
Tue 12/23
7:09 pm-12:07 am
1 stop3h 58m
$511
- Most accurate provider: When it comes to deals on Harrisburg-Decatur, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harrisburg-Decatur, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harrisburg-Decatur, Illinois flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Harrisburg-Decatur, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub 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 Harrisburg-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 Harrisburg to Decatur
Have a flexible travel schedule? Discover the best time to fly to Decatur from Harrisburg 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.
Related info for your journey
Find useful and relevant information for your journey from Harrisburg to Decatur. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Decatur?
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Effingham