$204 Cheap United flights Harrisburg (MDT) to Chicago (ORD)

You can find affordable return United Airlines flights from $209 from MDT to ORD by sorting your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $204 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Start searching one to three months ahead of your departure date to get cheap fares on United Airlines flights from Harrisburg Intl. Airport (MDT) to O'Hare Intl. Airport (ORD). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

The first United Airlines flight from MDT to ORD takes off at 6:30AM UTC-5, arriving at 7:46AM UTC-6. If you prefer to set off later, the last United Airlines flight leaves MDT at 5:40PM UTC-5 and lands at ORD at 6:59PM UTC-6. Flying before midday is often a wise choice as morning flights tend to experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Journey from MDT to ORD with United Airlines and you can look forward to a range of perks starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.