$94 Cheap Frontier Airlines flights Denver (DEN) to Missoula (MSO)

You can find affordable return Frontier Airlines flights from $159 from DEN to MSO by sorting your results from “Price (lowest to highest)” on Expedia. Or look for deals from $94 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.

January is one of the least expensive months to get away to Missoula with Frontier Airlines. You could also find great prices on return and one-way fares in February.

Start searching one to three months ahead of your travel date to score cheap fares on Frontier Airlines flights from Denver Intl. Airport (DEN) to Missoula Intl. Airport (MSO). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to 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.

Enter your dates, hit search and check “Nonstop” on Expedia to browse any direct flights from DEN to MSO with Frontier Airlines or other airlines.

Filter your results by “Morning” and “Early Morning” to find the earliest departures from DEN to MSO. Leaving early means you’re 20% less likely to experience 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.

Take a Frontier Airlines flight from Denver Intl. Airport (DEN) to Missoula, and you’ll probably arrive at Missoula Intl. Airport (MSO). This is the airline’s main hub in this destination.

Journey from DEN to MSO with Frontier Airlines and you can look forward to a host of benefits including a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee typically applies if you cancel or change your booking more than 24 hours after confirmation. To find flexible fares, select our “No cancel fee” or “Changes included” filter when you look for flights. For more details on changing or canceling your reservation, head to “Trips,” select your flight and tick “Manage Booking.”