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Cheap flights from Harrisburg to Decatur from $450

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harrisburg to Decatur departing on 11/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Harrisburg to Decatur

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:48 pm - 6:10 pmMDT  Harrisburg-DEC Decatur Arpt
25h 22m1 stop Chicago O'Hare Intl
United Airlines Logo
9:10 am - 4:46 pmDEC  Decatur Arpt-MDT Harrisburg
6h 36m1 stop Chicago O'Hare Intl
$450United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
2:40 pm - 8:35 amMDT  Harrisburg-DEC Decatur Arpt
18h 55m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
United Airlines Logo
9:10 am - 4:46 pmDEC  Decatur Arpt-MDT Harrisburg
6h 36m1 stop Chicago O'Hare Intl
$496United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
6:15 am - 5:55 pmMDT  Harrisburg-DEC Decatur Arpt
12h 40m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
United Airlines Logo
9:10 am - 6:36 pmDEC  Decatur Arpt-MDT Harrisburg
8h 26m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
$622United Airlines
Sat, Nov 14 - Wed, Nov 18

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United Airlines flights from Harrisburg to Decatur, Illinois

Our best United Airlines deals on Harrisburg to Decatur, Illinois flight tickets
United Airlines
Nov 14
MDT5:48 pmHarrisburg
25h 22m
1 stop
DEC6:10 pmDecatur Arpt
Nov 18
DEC9:10 amDecatur Arpt
6h 36m
1 stop
MDT4:46 pmHarrisburg
$450
United Airlines
Nov 14
MDT2:40 pmHarrisburg
18h 55m
2 stops
DEC8:35 amDecatur Arpt
Nov 18
DEC9:10 amDecatur Arpt
6h 36m
1 stop
MDT4:46 pmHarrisburg
$496
United Airlines
Nov 14
MDT6:15 amHarrisburg
12h 40m
2 stops
DEC5:55 pmDecatur Arpt
Nov 18
DEC9:10 amDecatur Arpt
8h 26m
2 stops
MDT6:36 pmHarrisburg
$622

momondo Fare Finder

 
Customize your flight search to find flights from Harrisburg to Decatur, Illinois 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, momondo users made 832,500 searches. Data last updated August 12, 2026.
Use the filters below to find and compare flights from Harrisburg to Decatur, Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarrisburgDecatur

MDT Harrisburg - DEC Decatur Arpt

MDTDEC

Harrisburg

Sat 11/14

5:48 pm-6:10 pm

1 stop25h 22m

Decatur Arpt

Wed 11/18

9:10 am-4:46 pm

1 stop6h 36m

$450

HarrisburgDecatur

MDT Harrisburg - DEC Decatur Arpt

MDTDEC

Harrisburg

Sat 11/14

2:40 pm-8:35 am

2 stops18h 55m

Decatur Arpt

Wed 11/18

9:10 am-4:46 pm

1 stop6h 36m

$496
Quickest round-trip

HarrisburgDecatur

MDT Harrisburg - DEC Decatur Arpt

MDTDEC

Harrisburg

Sat 11/14

6:15 am-5:55 pm

2 stops12h 40m

Decatur Arpt

Wed 11/18

9:10 am-6:36 pm

2 stops8h 26m

$622

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Decatur from

How to get the cheapest flight ticket from Harrisburg to Decatur, Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to Decatur, Illinois?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Decatur, Illinois from Harrisburg according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Decatur, Illinois. Keep in mind that there are 3 different airlines that fly to Decatur, Illinois on a routine basis, so you have a few additional options to choose from.

When to book flights from Harrisburg to Decatur, Illinois

Are you open to changing your travel dates? Check out the ideal times to fly from Harrisburg to Decatur, Illinois according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harrisburg to Decatur, Illinois (MDT to DEC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harrisburg to Decatur, Illinois

Fastest flight time

25h 22m

Direct flights

None
The fastest flight from Harrisburg to Decatur, Illinois takes 25h 22m
There are no direct flights from Harrisburg to Decatur, Illinois. There are no popular flight routes from Harrisburg to Decatur, Illinois.
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Frequently asked questions about flying from Harrisburg to Decatur, Illinois

  • How far is Harrisburg to Decatur Arpt by plane?

    Harrisburg and Decatur Arpt are 638.1 mi apart from one another. By plane, this route typically takes 25h 22m.

  • When did momondo last update prices for flights from Harrisburg Airport to Decatur Arpt Airport?

    Prices for flights from Harrisburg Airport to Decatur Arpt Airport refresh daily.

  • How old do you have to be to fly from Harrisburg Airport to Decatur Arpt Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harrisburg Airport to Decatur Arpt Airport.

  • What documentation or ID do you need to fly to Decatur Arpt Airport?

    The necessary travel and health documents for your Decatur Arpt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Decatur?

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

Why use momondo?

Why should I use momondo to find a flight deal from Harrisburg to Decatur?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harrisburg to Decatur for you.

Can I find flights from Harrisburg to Decatur with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Decatur from Harrisburg with this policy.

How can momondo help me find flights from Harrisburg to Decatur?

momondo provides multiple filters to help you find the best flight to Decatur from Harrisburg. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Harrisburg to Decatur right now. Can momondo alert me if prices change?

Price alerts on flights to Decatur from Harrisburg are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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