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Harrisburg

$86+ Cheap flights from Illinois to Harrisburg (MDT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MDT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Harrisburg

Keep the following information in mind while searching for Illinois to Harrisburg flight deals. Data was last updated September 17, 2025.

Round-trip from

$160
(Frontier)

One-way from

$86
(Frontier)

Popular in

February

Cheapest in

August

Average price

$393
From Illinois to Harrisburg
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One-way flight from Illinois to Harrisburg
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Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Illinois to Harrisburg

Cheapest flights from Illinois to Harrisburg
Explore the most affordable flight options available from Illinois to Harrisburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:49 pmORD - MDT
1 stop12h 23mFrontier
Mon 10/610:57 amMDT - ORD
1 stop9h 47mFrontier
Deal found 9/17$160
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/101:55 pmORD - MDT
Nonstop1h 57mUnited Airlines
Sun 10/126:30 amMDT - ORD
Nonstop2h 07mUnited Airlines
Deal found 9/15$209
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:05 amORD - MDT
Nonstop1h 56mAmerican Airlines
Mon 10/68:11 pmMDT - ORD
Nonstop2h 13mAmerican Airlines
Deal found 9/15$219
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/16:20 pmORD - MDT
Nonstop2h 05mUnited Airlines
Sun 10/58:15 amMDT - ORD
Nonstop2h 14mUnited Airlines
Deal found 9/16$229
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 pmMDW - MDT
1 stop3h 51mDelta
Tue 12/306:10 amMDT - MDW
1 stop3h 39mDelta
Deal found 9/16$229
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/176:20 pmORD - MDT
Nonstop2h 05mUnited Airlines
Sun 10/196:30 amMDT - ORD
Nonstop2h 07mUnited Airlines
Deal found 9/16$230
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/28:50 amORD - MDT
1 stop4h 04mUnited Airlines
Mon 10/65:48 pmMDT - ORD
Nonstop2h 07mUnited Airlines
Deal found 9/17$239
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/98:50 amORD - MDT
1 stop4h 04mUnited Airlines
Mon 10/136:30 amMDT - ORD
Nonstop2h 07mUnited Airlines
Deal found 9/16$240
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:20 amORD - MDT
1 stop4h 36mAmerican Airlines
Sun 11/25:00 amMDT - ORD
Nonstop2h 21mAmerican Airlines
Deal found 9/15$248
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:39 pmORD - MDT
Nonstop2h 09mAmerican Airlines
Mon 10/208:11 pmMDT - ORD
Nonstop2h 13mAmerican Airlines
Deal found 9/14$249
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:15 pmMDW - MDT
1 stop3h 46mDelta
Mon 10/66:25 pmMDT - MDW
1 stop4h 49mDelta
Deal found 9/16$249
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:44 amSTL - MDT
1 stop5h 25mDelta
Mon 11/2412:41 pmMDT - STL
1 stop5h 28mDelta
Deal found 9/15$249

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Harrisburg 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 September 17, 2025.
Use the filters below to find and compare flights from Illinois to Harrisburg that are best for you.

Fly from

Illinois

Fly to

Harrisburg

Route

Depart

Return

Price

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Sat 10/11

6:20 pm-9:25 pm

Nonstop2h 05m

Harrisburg

Tue 10/14

6:30 am-7:37 am

Nonstop2h 07m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Wed 10/1

8:05 am-11:01 am

Nonstop1h 56m

Harrisburg

Mon 10/6

8:11 pm-9:24 pm

Nonstop2h 13m

$219

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Wed 12/10

7:10 am-10:06 am

Nonstop1h 56m

Harrisburg

Wed 12/17

10:40 am-2:25 pm

1 stop4h 45m

$219

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Fri 10/17

6:20 pm-9:25 pm

Nonstop2h 05m

Harrisburg

Sun 10/19

6:30 am-7:37 am

Nonstop2h 07m

$230

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 10/9

6:20 pm-9:25 pm

Nonstop2h 05m

Harrisburg

Mon 10/13

6:30 am-7:37 am

Nonstop2h 07m

$230

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 10/2

8:50 am-1:54 pm

1 stop4h 04m

Harrisburg

Mon 10/6

5:48 pm-6:55 pm

Nonstop2h 07m

$239

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 11/13

8:20 am-11:12 am

Nonstop1h 52m

Harrisburg

Sun 11/16

7:24 pm-10:55 pm

1 stop4h 31m

$248

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 11/19

11:44 am-6:09 pm

1 stop5h 25m

Harrisburg

Mon 11/24

12:41 pm-5:09 pm

1 stop5h 28m

$249

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 10/22

6:40 am-11:53 am

1 stop4h 13m

Harrisburg

Wed 10/29

11:44 am-3:55 pm

1 stop5h 11m

$249

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 11/20

5:00 am-10:54 am

1 stop4h 54m

Harrisburg

Mon 11/24

6:48 am-2:20 pm

1 stop8h 32m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Harrisburg

Have a flexible travel schedule? Discover the best time to fly to Harrisburg from Illinois 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 Illinois to Harrisburg

What is the cheapest month to book a flight from Illinois to Harrisburg?

Currently, August is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $347). Flying from Illinois to Harrisburg in November is currently the most expensive (average of $408). 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.

What is the cheapest time of day to fly from IL to MDT?

Find hourly flight availability from Illinois to Harrisburg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Illinois to Harrisburg, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to Harrisburg

Explore weekly flight availability from Illinois to Harrisburg. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 17, 2025.

The most flights from USIL to MDT are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

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

  • What airport do you fly into for flights to Harrisburg from Illinois?

    If you book a flight to Harrisburg from Illinois, you will be flying to Harrisburg, which is the city’s only airport. Harrisburg (MDT) is located 8.5 mi from the center of Harrisburg.

  • How long is the flight from Illinois to Harrisburg?

    For as low as $219, United Airlines can have you in Harrisburg from Illinois in 1h 56m. Illinois and Harrisburg are separated by a distance of 592 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Harrisburg?

    When deciding which route to take from Illinois to Harrisburg consider Chicago O'Hare Intl - Harrisburg, Chicago Midway - Harrisburg or Lambert-St Louis - Harrisburg as they are the most popular.

  • What are the most reliable airlines from Illinois to Harrisburg?

    The top 3 most reliable airlines when flying from Illinois to Harrisburg are Republic Airways (100%), Qatar Airways (91%) and Alaska Airlines (84%).

  • What are the cheapest flights from Illinois to Harrisburg?

    While on average a flight from Illinois to Harrisburg is generally $339, our data shows the cheapest flight currently is $168. When looking at the most popular route, (Chicago O'Hare Intl - Harrisburg), you can expect to pay $209 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Harrisburg 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 Illinois to Harrisburg?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $347). Flying from Illinois to Harrisburg in November is currently the most expensive (average of $408). 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 Harrisburg?

Book flights to Harrisburg if you plan to visit one of these locations
Carlisle
Mechanicsburg
Hershey
Camp Hill

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Alternative routes for Illinois to Harrisburg

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Illinois to Harrisburg

Discover the top 2 airlines that operate flights from Illinois to Harrisburg. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$204Average$397FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$238Average$400FlexibilityNo cancel feeOn-time71%

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