Missoula is served by Missoula Montana Airport (MSO), a key airport in Western Montana and a gateway to the Northern Rockies. Due to tourism demand for outdoor recreation, flights into MSO can be expensive, especially during summer and winter peak seasons, with a focus on connections from major U.S. hubs to Missoula.
The airport's most vital routes to Missoula are flights from major airline hubs across the country into MSO. Key departure points to Missoula include Seattle (SEA) on Alaska and Delta, Salt Lake City (SLC) on Delta, Denver (DEN) on United and Frontier, Minneapolis (MSP) on Delta, and Chicago (ORD) on United. There are also seasonal direct flights to Missoula from leisure cities like Las Vegas (LAS), Los Angeles (LAX), Phoenix (PHX), and Atlanta (ATL).
Missoula Montana Airport is served by all major U.S. network carriers flying into MSO: Alaska Airlines, Delta Air Lines, United Airlines, and American Airlines. Low-cost carriers Frontier Airlines and Allegiant Air provide competition on select routes into Missoula, primarily from Denver and Las Vegas to MSO.
To find affordable flights to Missoula, book arrivals into MSO as far in advance as possible—ideally 3-6 months for peak seasons for flights to Missoula. Be extremely flexible with arrival dates into MSO; flying into Missoula mid-week is significantly cheaper. Use flight comparison tools and set alerts for MSO. For the best deals to Missoula, consider low-cost carriers Frontier and Allegiant into MSO, but factor in their fees. For origins not served directly to Missoula, connecting through Seattle (SEA), Salt Lake City (SLC), or Denver (DEN) to MSO is standard. Due to high seasonal demand into Missoula, last-minute fares to MSO are very expensive.