PEN417 Cheap United flights Chicago (ORD) to Duluth (DLH)

Apply the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from PEN579 from ORD to DLH. Affordable one-way tickets from PEN417 are available as well.**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 travel date to get cheap fares on United Airlines flights from O'Hare Intl. Airport (ORD) to Duluth Intl. Airport (DLH). 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.* Nail your timing, 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 ORD to DLH departs at 12:45PM UTC-6, touching down at 2:25PM UTC-6. If you'd like to jet off later, the last United Airlines flight leaves ORD at 8:13PM UTC-6 and lands at DLH at 9:57PM UTC-6. Flying early is generally a good idea as morning flights are least likely to face 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.

Fly from ORD to DLH with United Airlines and you'll enjoy a host of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.