HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Harrisburg

$110+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MDT
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Harrisburg 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 Illinois to Harrisburg

Keep the following information in mind while searching for Illinois to Harrisburg flight deals. Data was last updated June 16, 2025.

Round-trip from

$219
(American Airlines)

One-way from

$110
(Mytrip)

Popular in

November

Cheapest in

May

Average price

$315
From Illinois to Harrisburg
Search Deals
One-way flight from Illinois to Harrisburg
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 16, 2025.

This American Airlines deal was found by Cheapflights users on 6/14. 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.
Thu 7/38:42 pmORD - MDT
Nonstop2h 16mAmerican Airlines
Sat 7/511:27 amMDT - ORD
Nonstop2h 16mAmerican Airlines
Deal found 6/14$219
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 7/155:05 pmMDW - MDT
1 stop5h 47mDelta
Sun 7/206:10 amMDT - MDW
1 stop3h 34mDelta
Deal found 6/15$229
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1211:10 amORD - MDT
1 stop4h 05mDelta
Sat 7/196:25 pmMDT - ORD
1 stop6h 44mDelta
Deal found 6/14$229
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 7/156:14 pmORD - MDT
Nonstop1h 57mUnited Airlines
Mon 7/216:30 amMDT - ORD
Nonstop2h 11mUnited Airlines
Deal found 6/15$233
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/244:36 pmORD - MDT
1 stop14h 49mMultiple Airlines
Sat 7/264:36 pmMDT - ORD
1 stop25h 05mMultiple Airlines
Deal found 6/15$242
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/226:26 amSTL - MDT
1 stop6h 35mAmerican Airlines
Sun 8/246:43 amMDT - STL
1 stop6h 28mAmerican Airlines
Deal found 6/14$249
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:45 amSTL - MDT
2 stops9h 21mDelta
Sat 10/116:00 amMDT - STL
1 stop7h 25mDelta
Deal found 6/14$254
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/123:34 pmSTL - MDT
1 stop25h 36mMultiple Airlines
Mon 7/148:51 pmMDT - STL
2 stops22h 50mMultiple Airlines
Deal found 6/14$283
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/13:39 pmPIA - MDT
1 stop4h 32mUnited Airlines
Tue 7/86:30 amMDT - PIA
1 stop4h 49mUnited Airlines
Deal found 6/14$294
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/179:07 amPIA - MDT
1 stop27h 12mAllegiant Air
Mon 7/219:15 amMDT - PIA
1 stop11h 10mAllegiant Air
Deal found 6/14$348
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/112:46 pmMDW - MDT
2 stops17h 31mAllegiant Air
Thu 8/1410:05 amMDT - MDW
2 stops33h 12mAllegiant Air
Deal found 6/14$376
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/125:00 amSTL - MDT
1 stop4h 14mUnited Airlines
Mon 7/146:30 amMDT - STL
1 stop6h 57mUnited Airlines
Deal found 6/14$435

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 June 16, 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

Thu 7/3

8:42 pm-11:58 pm

Nonstop2h 16m

Harrisburg

Sat 7/5

11:27 am-12:43 pm

Nonstop2h 16m

$219

ChicagoHarrisburg

MDW - MDT

MDWMDT

Chicago Midway

Tue 7/15

5:05 pm-11:52 pm

1 stop5h 47m

Harrisburg

Sun 7/20

6:10 am-8:44 am

1 stop3h 34m

$229

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Sat 7/12

11:10 am-4:15 pm

1 stop4h 05m

Harrisburg

Sat 7/19

6:25 pm-12:09 am

1 stop6h 44m

$229

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Tue 7/15

6:14 pm-9:11 pm

Nonstop1h 57m

Harrisburg

Mon 7/21

6:30 am-7:41 am

Nonstop2h 11m

$233

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 7/24

4:36 pm-8:25 am

1 stop14h 49m

Harrisburg

Sat 7/26

4:36 pm-4:41 pm

1 stop25h 05m

$242

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 8/22

6:26 am-2:01 pm

1 stop6h 35m

Harrisburg

Sun 8/24

6:43 am-12:11 pm

1 stop6h 28m

$249

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 10/8

6:45 am-5:06 pm

2 stops9h 21m

Harrisburg

Sat 10/11

6:00 am-12:25 pm

1 stop7h 25m

$254

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Sat 7/12

3:34 pm-6:10 pm

1 stop25h 36m

Harrisburg

Mon 7/14

8:51 pm-6:41 pm

2 stops22h 50m

$283

PeoriaHarrisburg

PIA - MDT

PIAMDT

Greater Peoria

Tue 7/1

3:39 pm-9:11 pm

1 stop4h 32m

Harrisburg

Tue 7/8

6:30 am-10:19 am

1 stop4h 49m

$294

PeoriaHarrisburg

PIA - MDT

PIAMDT

Greater Peoria

Thu 7/17

9:07 am-1:19 pm

1 stop27h 12m

Harrisburg

Mon 7/21

9:15 am-7:25 pm

1 stop11h 10m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 24 results
1
2
3

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, January is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $355). Flying from Illinois to Harrisburg in July is currently the most expensive (average of $425). 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 June 16, 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 June 16, 2025.

The most flights from USIL to MDT are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Rainfall in Harrisburg by month

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

In terms of precipitation, rainfall in Harrisburg ranges from 2.7 - 4.1 inches per month. May is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Harrisburg when rainfall is around 2.7 in.

Temperature in Harrisburg by month

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

If weather is an important factor for your trip to Harrisburg, 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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Harrisburg

Get insights into the airlines that provide service to Harrisburg. 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 Harrisburg. Reviews last updated June 16, 2025.
Read through reviews of airlines operating flights from Illinois to Harrisburg, such as Delta, United Airlines and Allegiant Air. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,963 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
8,798 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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!
Allegiant Air
7.3
Good
722 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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!
Frontier
5.9
Fair
3,294 reviews
Delta
8.0
Very good
7,963 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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 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.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $110. Users have also found prices from $220 and $224 on Frontier and American Airlines, respectively.

  • 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 (91%), Envoy Air (84%) and Japan Airlines (82%).

  • What are the cheapest flights from Illinois to Harrisburg?

    While on average a flight from Illinois to Harrisburg is generally $268, our data shows the cheapest flight currently is $192. 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, January is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $355). Flying from Illinois to Harrisburg in July is currently the most expensive (average of $425). 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 Illinois?

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

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 Illinois to Harrisburg

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Newark flights
O'Hare Intl to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Atlanta to John F Kennedy Intl flights
San Francisco to Newark flights
Atlanta to Newark flights
Los Angeles to LaGuardia flights
Miami to John F Kennedy Intl flights
O'Hare Intl to Newark flights
Fort Lauderdale to LaGuardia flights
Atlanta to LaGuardia flights
Fort Lauderdale to Newark flights
O'Hare Intl to LaGuardia flights
Miami to Newark flights
Seattle to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
Miami to LaGuardia flights
Hobby to LaGuardia flights
Hobby to John F Kennedy Intl flights
Orlando to LaGuardia flights
San Francisco to LaGuardia flights
Hobby to Newark flights
Ontario to John F Kennedy Intl flights
Fort Lauderdale to John F Kennedy Intl flights
Seattle to Newark flights
Orlando to Newark flights
Los Angeles to Dulles Intl flights
Burbank to Newark flights
Denver to John F Kennedy Intl flights
Los Angeles to Reagan-National flights
Santa Ana to Newark flights
Tampa to Newark flights
Tampa to John F Kennedy Intl flights
Minneapolis to LaGuardia flights
Boston to Reagan-National flights
George Bush Intcntl to Newark flights
Sky Harbor Intl to John F Kennedy Intl flights
San Diego to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
Love Field to LaGuardia flights
San Diego to Newark flights
Sky Harbor Intl to Newark flights
West Palm Beach to John F Kennedy Intl flights
Denver to LaGuardia flights
Denver to Newark flights

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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$198Average$391FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$213Average$363FlexibilityNo cancel feeOn-time71%

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.