$136 Cheap Delta flights St. Louis (STL) to Missoula (MSO)

Grab cheap round-trip Delta Air Lines flights from $266 from STL to MSO by filtering your results from “Price (lowest to highest)” on Expedia. Or search for deals from $136 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 cheapest months to travel to Missoula with Delta Air Lines. You could also find fantastic deals on return and one-way fares in February.

Start searching one to three months before your departure to find cheaper fares on Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) 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.* Nail your timing, and you can enjoy significant savings on domestic journeys.*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.

Simply enter your dates, click search and tick the “Nonstop” filter on Expedia to find any direct flights from STL to MSO with Delta Air Lines or another carrier.

Sort your results by “Morning” and “Early Morning” to see the earliest departures from STL to MSO. Heading off early means flight cancellations are less likely.**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 Delta Air Lines flight from Lambert-St. Louis Intl. Airport (STL) to Missoula, and you’ll most likely come in to Missoula Intl. Airport (MSO). This is the airline’s main hub in this city.

Delta Air Lines makes traveling from STL to MSO more enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start earning points with Delta SkyMiles. Remember to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or change your flight, although there may be additional charges if your booking was made over 24 hours ago. Prefer to keep your options open? Make use of our “Changes included” and “No cancel fee” filters to find flights that won’t charge you extra if you have to revise your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for further information.