HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Decatur

$386+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — DEC
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Harrisburg to Decatur with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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

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 August 21, 2025.

Round-trip from

$442
(United Airlines)
From Harrisburg to Decatur Arpt
Search Deals

Find flight deals from Harrisburg to Decatur

Cheapest flights from Harrisburg to Decatur
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 August 21, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 9/305:48 pmMDT - DEC
1 stop25h 16mUnited Airlines
Sat 10/49:38 amDEC - MDT
1 stop6h 14mUnited Airlines
Deal found 8/18$386
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/310:55 amMDT - DEC
1 stop8h 04mUnited Airlines
Sun 9/79:42 amDEC - MDT
1 stop10h 33mUnited Airlines
Deal found 8/19$476

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 August 21, 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

Tue 9/30

5:48 pm-8:51 am

1 stop16h 03m

Decatur Arpt

Sat 10/4

9:38 am-10:14 am

1 stop23h 36m

$442

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

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.

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

    For as low as $442, United Airlines can have you in Decatur, Illinois from Harrisburg in 16h 03m. Harrisburg and Decatur, Illinois are separated by a distance of 640 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harrisburg 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.

See more FAQs

Traveling to a place near Decatur?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Harrisburg to Decatur

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to O'Hare Intl flights
LaGuardia to O'Hare Intl flights
Newark to O'Hare Intl flights
Reagan-National to O'Hare Intl flights
Dulles Intl to O'Hare Intl flights
Philadelphia to O'Hare Intl flights
John F Kennedy Intl to Midway flights
Newark to Midway flights
Dulles Intl to Midway flights
LaGuardia to Midway flights
Philadelphia to Midway flights
Reagan-National to Midway flights
Pittsburgh to O'Hare Intl flights
Newark to St. Louis flights
LaGuardia to St. Louis flights
John F Kennedy Intl to St. Louis flights
Dulles Intl to St. Louis flights
Harrisburg to O'Hare Intl flights
Philadelphia to St. Louis flights
Reagan-National to St. Louis flights
Pittsburgh to Midway flights
Allentown to O'Hare Intl flights
Scranton to O'Hare Intl flights
Pittsburgh to St. Louis flights
John F Kennedy Intl to Moline flights
Harrisburg to Midway flights
Newark to Rockford flights
LaGuardia to Moline flights
Harrisburg to St. Louis flights
Newark to Moline flights
Reagan-National to Peoria flights
Dulles Intl to Peoria flights
Allentown to Midway flights
Dulles Intl to Moline flights
State College to O'Hare Intl flights
Reagan-National to Moline flights
Allentown to St. Louis flights
Pittsburgh to Rockford flights
Newark to Peoria flights
LaGuardia to Peoria flights
Scranton to St. Louis flights
Newark to Bloomington flights
Philadelphia to Moline flights
Philadelphia to Rockford flights
Newark to Springfield flights
John F Kennedy Intl to Springfield flights
Newark to Champaign flights
John F Kennedy Intl to Champaign flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.