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$86+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — ORD
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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Cheap flight deals from Harrisburg to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) to Illinois (USIL). 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 January 20, 2025.

Round-trip from

$199
(United Airlines)

One-way from

$119
(Delta)
From Harrisburg to Illinois
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One-way flight from Harrisburg to Illinois
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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 January 20, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. 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 2/46:30 amMDT - PIA
1 stop4h 49mUnited Airlines
Sat 2/83:36 pmPIA - MDT
1 stop4h 38mUnited Airlines
Deal found 1/20$199
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/185:00 amMDT - STL
1 stop6h 58mAmerican Airlines
Wed 2/192:10 pmSTL - MDT
1 stop5h 15mAmerican Airlines
Deal found 1/20$199
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/26:06 pmMDT - STL
1 stop6h 37mFrontier
Mon 3/35:20 pmSTL - MDT
1 stop22h 20mFrontier
Deal found 1/20$220
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/126:00 pmMDT - ORD
1 stop6h 49mDelta
Wed 2/1911:15 amORD - MDT
1 stop4h 58mDelta
Deal found 1/19$239
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/126:00 pmMDT - MDW
1 stop5h 20mDelta
Wed 2/1910:57 amMDW - MDT
1 stop5h 16mDelta
Deal found 1/19$239
This American Airlines deal was found by Cheapflights users on 1/20. 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 4/305:07 pmMDT - ORD
Nonstop2h 18mAmerican Airlines
Mon 5/56:20 pmORD - MDT
Nonstop2h 08mAmerican Airlines
Deal found 1/20$249
This Mytrip deal was found by Cheapflights users on 1/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/27:43 pmMDT - ORD
1 stop21h 40mFrontier
Sun 2/238:14 amORD - MDT
1 stop25h 45mFrontier
Deal found 1/19$258
This deal was found by Cheapflights users on 1/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:27 amMDT - MLI
2 stops10h 36mAmerican Airlines
Wed 2/126:31 amMLI - MDT
2 stops12h 44mAmerican Airlines
Deal found 1/20$281
This Delta deal was found by Cheapflights users on 1/20. 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 2/66:00 pmMDT - MLI
1 stop5h 38mDelta
Wed 2/125:47 amMLI - MDT
1 stop5h 28mDelta
Deal found 1/20$289
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/46:27 amMDT - PIA
2 stops10h 23mAmerican Airlines
Sat 2/83:33 pmPIA - MDT
1 stop6h 52mAmerican Airlines
Deal found 1/20$305
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Tue 4/226:30 amMDT - ORD
Nonstop2h 09mUnited Airlines
Mon 4/286:27 pmORD - MDT
Nonstop2h 00mUnited Airlines
Deal found 1/19$319
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Thu 1/308:23 pmMDT - ORD
1 stop15h 57mMultiple Airlines
Sun 2/26:06 pmORD - MDT
1 stop13h 18mMultiple Airlines
Deal found 1/20$342

Find flights from Harrisburg to Illinois within your budget

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HarrisburgPeoria

MDT - PIA

MDTPIA

Harrisburg

Tue 2/4

6:30 am-10:19 am

1 stop4h 49m

Greater Peoria

Sat 2/8

3:36 pm-9:14 pm

1 stop4h 38m

$199

HarrisburgSt. Louis

MDT - STL

MDTSTL

Harrisburg

Tue 2/18

5:00 am-10:58 am

1 stop6h 58m

Lambert-St Louis

Wed 2/19

2:10 pm-8:25 pm

1 stop5h 15m

$199

HarrisburgSt. Louis

MDT - STL

MDTSTL

Harrisburg

Sun 3/2

6:06 pm-11:43 pm

1 stop6h 37m

Lambert-St Louis

Mon 3/3

5:20 pm-4:40 pm

1 stop22h 20m

$220

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Wed 2/12

6:00 pm-11:49 pm

1 stop6h 49m

Chicago O'Hare Intl

Wed 2/19

11:15 am-5:13 pm

1 stop4h 58m

$239

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Tue 2/11

5:37 pm-6:55 pm

Nonstop2h 18m

Chicago O'Hare Intl

Thu 2/13

7:20 am-10:05 am

Nonstop1h 45m

$249

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Sat 2/15

7:41 am-9:12 am

Nonstop2h 31m

Chicago O'Hare Intl

Mon 2/17

7:25 pm-10:19 pm

Nonstop1h 54m

$254

HarrisburgChicago

MDT - ORD

MDTORD

Harrisburg

Sun 2/2

7:43 pm-4:23 pm

1 stop21h 40m

Chicago O'Hare Intl

Sun 2/23

8:14 am-10:59 am

1 stop25h 45m

$258

HarrisburgMoline

MDT - MLI

MDTMLI

Harrisburg

Thu 2/6

6:27 am-4:03 pm

2 stops10h 36m

Moline Quad-City

Wed 2/12

6:31 am-8:15 pm

2 stops12h 44m

$281

HarrisburgMoline

MDT - MLI

MDTMLI

Harrisburg

Thu 2/6

6:00 pm-10:38 pm

1 stop5h 38m

Moline Quad-City

Wed 2/12

5:47 am-12:15 pm

1 stop5h 28m

$289

HarrisburgPeoria

MDT - PIA

MDTPIA

Harrisburg

Tue 2/4

6:27 am-3:50 pm

2 stops10h 23m

Greater Peoria

Sat 2/8

3:33 pm-11:25 pm

1 stop6h 52m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 25 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.

Travel insights for flights from Harrisburg to Illinois

Get recent, data-driven insights about flights from Harrisburg to Illinois including ideal travel times, pricing trends, and more.

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 $320). 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 January 20, 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 January 20, 2025.

The most flights from MDT to USIL are scheduled on a Monday (12 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 January 20, 2025.
Read through reviews of airlines operating flights from Harrisburg to Illinois, such as United Airlines, American Airlines and Frontier. 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
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,982 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier
6.1
Okay
3,441 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $119. Users have also found prices from $131 and $140 on Frontier 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: Republic Airways (100%), Japan Airlines (86%), American Airlines( 78%).

  • What are the cheapest flights from Harrisburg to Illinois?

    While on average a flight from Harrisburg to Illinois is generally $969, our data shows the cheapest flight currently is $182. When looking at the most popular route, (Harrisburg - Chicago O'Hare Intl), you can expect to pay $239 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 $320). 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.

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Alternative routes for Harrisburg to Illinois

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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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$181Average$488FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$203Average$363FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$215Average$433FlexibilityNo cancel feeOn-time71%
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