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$108+ Cheap flights from Harrisburg (MDT) to Illinois

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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — ORD
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Harrisburg to Illinois

Keep the following information in mind while searching for Harrisburg to Illinois flight deals. Data was last updated September 14, 2025.

Round-trip from

$219
(American Airlines)

One-way from

$108
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$319
From Harrisburg to Illinois
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One-way flight from Harrisburg to Illinois
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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 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 Harrisburg to Illinois

Cheapest flights from Harrisburg to Illinois
Explore the most affordable flight options available from Harrisburg to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1911:07 amMDT - MDW
1 stop23h 44mFrontier
Sun 9/2110:13 amMDW - MDT
1 stop22h 49mFrontier
Deal found 9/12$218
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amMDT - ORD
Nonstop2h 09mAmerican Airlines
Mon 10/68:39 pmORD - MDT
Nonstop2h 09mAmerican Airlines
Deal found 9/13$219
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:31 pmMDT - ORD
1 stop25h 02mMultiple Airlines
Sun 10/266:54 pmORD - MDT
1 stop12h 39mMultiple Airlines
Deal found 9/12$220
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Sat 10/186:15 amMDT - ORD
1 stop4h 21mUnited Airlines
Wed 10/228:50 amORD - MDT
1 stop4h 04mUnited Airlines
Deal found 9/12$229
This Delta deal was found by Cheapflights users on 9/12. 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.
Sat 10/186:00 amMDT - MDW
1 stop4h 40mDelta
Tue 10/215:04 pmMDW - MDT
1 stop5h 04mDelta
Deal found 9/12$229
This Mytrip deal was found by Cheapflights users on 9/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:07 amMDT - ORD
2 stops25h 20mFrontier
Sun 10/511:36 amORD - MDT
2 stops21h 26mFrontier
Deal found 9/12$230
This Frontier deal was found by Cheapflights users on 9/12. 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.
Fri 9/2611:07 amMDT - STL
2 stops22h 59mFrontier
Sun 9/2810:39 amSTL - MDT
2 stops22h 23mFrontier
Deal found 9/12$233
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 10/136:30 amMDT - ORD
Nonstop2h 07mUnited Airlines
Thu 10/237:10 amORD - MDT
Nonstop2h 04mUnited Airlines
Deal found 9/11$238
This Delta deal was found by Cheapflights users on 9/12. 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 10/16:23 pmMDT - ORD
1 stop4h 51mDelta
Sun 10/55:30 amORD - MDT
1 stop4h 26mDelta
Deal found 9/12$239
This Delta deal was found by Cheapflights users on 9/12. 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.
Sat 10/186:00 amMDT - MDW
1 stop4h 40mDelta
Wed 10/225:04 pmMDW - MDT
1 stop5h 04mDelta
Deal found 9/12$239
This American Airlines deal was found by Cheapflights users on 9/12. 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 11/78:10 pmMDT - ORD
Nonstop2h 20mAmerican Airlines
Tue 11/118:20 amORD - MDT
Nonstop1h 52mAmerican Airlines
Deal found 9/12$245
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:11 pmMDT - ORD
Nonstop2h 13mAmerican Airlines
Fri 10/317:10 amORD - MDT
1 stop6h 08mAmerican Airlines
Deal found 9/11$248

Cheapflights Fare Finder

 
Customize your flight search to find flights from Harrisburg to 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, Cheapflights users made 2,558,603 searches. Data last updated September 14, 2025.
Use the filters below to find and compare flights from Harrisburg to Illinois that are best for you.

Fly from

Harrisburg

Fly to

Illinois

Route

Depart

Return

Price

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Sat 9/27

11:31 am-12:45 pm

Nonstop2h 14m

Chicago O'Hare Intl

Sun 9/28

8:05 am-11:01 am

Nonstop1h 56m

$229

HarrisburgChicago

MDT - MDW

MDTMDW

Harrisburg

Sat 10/18

6:00 am-9:40 am

1 stop4h 40m

Chicago Midway

Tue 10/21

5:04 pm-11:08 pm

1 stop5h 04m

$229

HarrisburgChicago

MDT - MDW

MDTMDW

Harrisburg

Thu 10/23

6:00 am-9:40 am

1 stop4h 40m

Chicago Midway

Mon 10/27

6:23 pm-11:00 pm

1 stop3h 37m

$229

HarrisburgChicago

MDT - MDW

MDTMDW

Harrisburg

Thu 10/30

6:00 am-9:45 am

1 stop4h 45m

Chicago Midway

Tue 11/4

5:09 pm-11:08 pm

1 stop4h 59m

$229

HarrisburgSt. Louis

MDT - STL

MDTSTL

Harrisburg

Fri 9/26

11:07 am-9:06 am

2 stops22h 59m

Lambert-St Louis

Sun 9/28

10:39 am-10:02 am

2 stops22h 23m

$233

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Mon 10/13

6:30 am-7:37 am

Nonstop2h 07m

Chicago O'Hare Intl

Thu 10/23

7:10 am-10:14 am

Nonstop2h 04m

$238

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Fri 10/3

6:00 am-7:09 am

Nonstop2h 09m

Chicago O'Hare Intl

Sun 10/5

5:00 am-12:03 pm

1 stop6h 03m

$248

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Sun 10/5

6:24 pm-7:38 pm

Nonstop2h 14m

Chicago O'Hare Intl

Sat 10/18

8:13 am-11:10 am

Nonstop1h 57m

$249

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Thu 10/23

12:33 pm-4:11 pm

1 stop4h 38m

Chicago O'Hare Intl

Mon 10/27

4:05 pm-11:08 pm

1 stop6h 03m

$249

HarrisburgPeoria

MDT - PIA

MDTPIA

Harrisburg

Wed 11/12

7:04 pm-11:28 pm

1 stop5h 24m

Greater Peoria

Mon 11/17

6:00 am-11:12 am

1 stop4h 12m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 51 results
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Best time to book a flight from Harrisburg to Illinois

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

Cheapflights Insights

Everything you need to know about your flight from Harrisburg to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Harrisburg to Illinois (average of $245). Flying from Harrisburg to Illinois in March is currently the most expensive (average of $321). 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 MDT to IL?

Find hourly flight availability from Harrisburg to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

When flying from Harrisburg to Illinois, 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 Harrisburg to Illinois

Explore weekly flight availability from Harrisburg to Illinois. 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 14, 2025.

The most flights from MDT to USIL are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 14, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Harrisburg to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,931 reviews
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Harrisburg to Illinois. 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 from for flights from Harrisburg to Illinois?

    Harrisburg (MDT), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Harrisburg to Illinois.

  • How long is the flight from Harrisburg to Illinois?

    For as low as $229, American Airlines can have you in Illinois from Harrisburg in 2h 14m. Airlines will cover a distance of 592 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Harrisburg to Illinois one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $145. Users have also found prices from $234 and $237 on Delta and American Airlines, respectively.

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

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

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

    Before booking your flight to Illinois from Harrisburg, check out the most reliable airlines to get you to your destination on time: Qatar Airways (93%), American Airlines (75%), Envoy Air( 75%).

  • What are the cheapest flights from Harrisburg to Illinois?

    While on average a flight from Harrisburg to Illinois is generally $764, our data shows the cheapest flight currently is $133. When looking at the most popular route, (Harrisburg - Chicago O'Hare Intl), you can expect to pay $209 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Harrisburg to Illinois (average of $245). Flying from Harrisburg to Illinois in March is currently the most expensive (average of $321). 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

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Top 3 airlines flying from Harrisburg to Illinois

Discover the top 3 airlines that operate flights from Harrisburg to Illinois. 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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$207Average$326FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$209Average$351FlexibilityNo cancel feeOn-time69%
DeltaCheapest$221Average$345FlexibilityNo cancel feeOn-timeN/A

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