$224 Cheap United flights Denver (DEN) to Moline (MLI)

Use the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines return flights from $219 from DEN to MLI. Affordable one-way fares from $224 are available too.**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.

Begin your search one to three months ahead of your departure date to score cheap fares on United Airlines flights from Denver Intl. Airport (DEN) to Quad City Intl. Airport (MLI). 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 reduce 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 spot on, and you can enjoy significant savings on domestic flights.*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 earliest United Airlines flight from DEN to MLI takes off at 5:25PM UTC-7, arriving at 8:42PM UTC-6. If you prefer to jet off later in the day, the last United Airlines flight leaves DEN at 5:25PM UTC-7 and touches down at MLI at 8:42PM UTC-6. Flying before midday is generally a smart option as morning and mid-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.

Offering a rewarding loyalty program, United Airlines is a top choice for many travelers departing from DEN to MLI. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.