HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Harrisburg

$107+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MDT
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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

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 January 21, 2026.

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.
Thu 2/55:42 pm
STL
-
MDT
1 stop15h 50m
Frontier
Sat 2/78:25 pm
MDT
-
STL
1 stop12h 39m
Frontier
Deal found 1/20$171
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/55:42 pm
STL
-
MDT
1 stop15h 50m
Frontier
Sun 2/87:50 pm
MDT
-
STL
1 stop28h 43m
Frontier
Deal found 1/20$195
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/136:10 pm
ORD
-
MDT
Nonstop1h 55m
United Airlines
Tue 3/175:36 pm
MDT
-
ORD
Nonstop2h 24m
United Airlines
Deal found 1/21$209
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.
Thu 2/122:58 pm
ORD
-
MDT
Nonstop1h 52m
American Airlines
Sun 2/1512:59 pm
MDT
-
ORD
Nonstop2h 12m
American Airlines
Deal found 1/20$210
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.
Thu 2/197:09 am
ORD
-
MDT
Nonstop1h 55m
United Airlines
Sun 2/222:33 pm
MDT
-
ORD
1 stop7h 02m
United Airlines
Deal found 1/19$219
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/75:42 pm
STL
-
MDT
1 stop24h 13m
Frontier
Tue 2/1011:27 am
MDT
-
STL
1 stop12h 00m
Frontier
Deal found 1/20$225
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.
Fri 3/135:40 pm
ORD
-
MDT
1 stop4h 10m
Delta
Tue 3/174:40 pm
MDT
-
ORD
1 stop4h 37m
Delta
Deal found 1/20$229
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.
Wed 3/184:18 pm
ORD
-
MDT
1 stop28h 10m
Frontier
Tue 3/2410:18 pm
MDT
-
ORD
1 stop26h 20m
Frontier
Deal found 1/20$234
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.
Fri 3/139:07 am
ORD
-
MDT
Nonstop1h 56m
American Airlines
Tue 3/179:51 am
MDT
-
ORD
1 stop5h 00m
American Airlines
Deal found 1/20$239
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/55:42 pm
STL
-
MDT
1 stop15h 50m
Frontier
Tue 2/1011:27 am
MDT
-
STL
1 stop12h 00m
Frontier
Deal found 1/20$239
This Kiwi.com deal was found by Cheapflights users on 1/21. 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.
Tue 2/108:30 am
ORD
-
MDT
1 stop24h 49m
Multiple Airlines
Tue 2/1711:27 am
MDT
-
ORD
2 stops24h 12m
Multiple Airlines
Deal found 1/21$247
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/15:42 pm
STL
-
MDT
1 stop16h 08m
Multiple Airlines
Sun 2/87:50 pm
MDT
-
STL
1 stop28h 43m
Multiple Airlines
Deal found 1/20$248

Find flight deals from Illinois to Harrisburg

Keep the following information in mind while searching for Illinois to Harrisburg flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$171
(Booking.com)

One-way from

$107
(Priceline)

Popular in

January

Cheapest in

June

Average price

$490
Provider with most accurate pricing for Chicago (CHI)-Harrisburg flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Harrisburg flights.
Search Deals
From Illinois to Harrisburg
Search Deals
One-way flight from Illinois to Harrisburg
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 21, 2026.
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

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 2/5

5:42 pm-10:32 am

1 stop15h 50m

Harrisburg

Sat 2/7

8:25 pm-8:04 am

1 stop12h 39m

$171

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 2/5

5:42 pm-10:32 am

1 stop15h 50m

Harrisburg

Sun 2/8

7:50 pm-11:33 pm

1 stop28h 43m

$195

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 3/19

7:05 am-10:00 am

Nonstop1h 55m

Harrisburg

Tue 3/24

6:15 am-7:32 am

Nonstop2h 17m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 3/19

9:07 am-12:03 pm

Nonstop1h 56m

Harrisburg

Tue 3/24

6:00 am-7:12 am

Nonstop2h 12m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Fri 3/13

6:10 pm-9:05 pm

Nonstop1h 55m

Harrisburg

Tue 3/17

5:36 pm-7:00 pm

Nonstop2h 24m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Sat 2/21

9:05 am-12:01 pm

Nonstop1h 56m

Harrisburg

Sat 2/28

6:31 pm-7:44 pm

Nonstop2h 13m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Fri 2/13

1:55 pm-4:44 pm

Nonstop1h 49m

Harrisburg

Sun 2/15

6:29 am-7:46 am

Nonstop2h 17m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Thu 2/19

7:09 am-10:04 am

Nonstop1h 55m

Harrisburg

Sun 2/22

6:29 am-7:46 am

Nonstop2h 17m

$209

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Sat 2/21

1:55 pm-4:44 pm

Nonstop1h 49m

Harrisburg

Sat 2/28

2:33 pm-6:41 pm

1 stop5h 08m

$219

ChicagoHarrisburg

ORD - MDT

ORDMDT

Chicago O'Hare Intl

Tue 2/17

8:50 am-1:56 pm

1 stop4h 06m

Harrisburg

Tue 2/24

5:40 pm-6:55 pm

Nonstop2h 15m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 48 results
1
2
3
...
5

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, February is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $58). Flying from Illinois to Harrisburg in April is currently the most expensive (average of $169). 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 January 21, 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 16% on flights from Illinois to Harrisburg by exploring options for tickets in the evening.

What is the cheapest day to fly from Illinois to Harrisburg?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Harrisburg. Price data was last updated on January 17, 2026.

Travelers seeking maximum savings on their Illinois to Harrisburg flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 21, 2026.

The most flights from USIL to MDT are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 $209, Frontier can have you in Harrisburg from Illinois in 1h 55m. 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, Lambert-St Louis - Harrisburg or Chicago Midway - 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 SkyWest Airlines (82%), Alaska Airlines (80%) and Envoy Air (79%).

  • What are the cheapest flights from Illinois to Harrisburg?

    While on average a flight from Illinois to Harrisburg is generally $472, our data shows the cheapest flight currently is $209. 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, February is the cheapest month in which you can book a flight from Illinois to Harrisburg (average of $58). Flying from Illinois to Harrisburg in April is currently the most expensive (average of $169). 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
Mechanicsburg
Hershey
Carlisle
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.
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to LaGuardia flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
San Francisco to Newark flights
Miami to John F Kennedy Intl flights
O'Hare Intl to John F Kennedy Intl flights
Fort Lauderdale to John F Kennedy Intl flights
Atlanta to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
Los Angeles to LaGuardia flights
Dallas/Fort Worth to Newark flights
Miami to LaGuardia flights
Atlanta to LaGuardia flights
Hobby to Newark flights
Hobby to LaGuardia flights
Fort Lauderdale to Newark flights
Hobby to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
O'Hare Intl to LaGuardia flights
Miami to Newark flights
O'Hare Intl to Newark flights
Tampa to John F Kennedy Intl flights
San Francisco to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
Austin to John F Kennedy Intl flights
Atlanta to Newark flights
George Bush Intcntl to Newark flights
Seattle to John F Kennedy Intl flights
Tampa to Newark flights
West Palm Beach to Newark flights
Tampa to LaGuardia flights
Seattle to Newark flights
Austin to Newark flights
Raleigh to John F Kennedy Intl flights
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
Orlando to Newark flights
Orlando to LaGuardia flights
Denver to John F Kennedy Intl flights
Denver to Newark flights
Sky Harbor Intl to John F Kennedy Intl flights
Denver to LaGuardia flights
Minneapolis to LaGuardia flights
George Bush Intcntl to LaGuardia flights
O'Hare Intl to Dulles Intl flights
Raleigh to LaGuardia flights
Detroit to John F Kennedy Intl flights
Boston to Dulles Intl 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$352FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$345FlexibilityNo 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.