$224 Cheap United flights Missoula (MSO) to Denver (DEN)

Make use of the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines round-trip flights from $198 from MSO to DEN. Affordable one-way options from $224 are also on offer.**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 travel date to score cheaper fares on United Airlines flights from Missoula Intl. Airport (MSO) to Denver Intl. Airport (DEN). 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.* Time it well, 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.

Departing MSO at 6:30AM UTC-7, the earliest United Airlines flight to DEN arrives at 8:46AM UTC-7. Flying early means you're less likely to encounter delays.* Prefer to travel later? The last United Airlines flight from MSO to DEN departs at 5:03PM UTC-7 and touches down at 7:15PM UTC-7.*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.

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