Cheap flights from Portland to Bozeman from $89

The month of January is, on average, the cheapest month to fly to Bozeman from Portland, with most prices found around $137. If you don’t want to visit Bozeman in January, then you should wait until September to fly from Portland, when ticket prices are also cheap, with an average price of $227.

Our data shows that Tuesday is the least expensive day to fly to Bozeman. Tickets to fly out on this day can be as low as $247. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Bozeman for around $354.

Our most recent data shows that the best time of day to fly to Bozeman is in the evening. Flights from Portland to Bozeman during this time can be as low as $207. In contrast, the most expensive time of day to depart to Bozeman is at noon when prices are around $448.

Fly from Portland to Bozeman Gallatin Field for the best Portland - Bozeman Gallatin Field flight prices

You are more likely to see cheaper flights to Bozeman from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Bozeman for around $280 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bozeman from Portland for as low as $180 on momondo.

There are 3 cabin classes available to choose from on Portland to Bozeman Gallatin Field flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 43% on your flight if you consider stops on a Portland to Bozeman flight.

As of March 2026, prices for Portland to Bozeman flights are approximately 155% more expensive when compared to flights at the same time last year.

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Portland to Bozeman Gallatin Field

Alaska Airlines, Hawaiian Airlines and Delta are the top three most popular airlines that fly to Bozeman from Portland according to our data. Alaska Airlines is the first choice among our users, with 70% of people opting to fly with this airline when traveling to Bozeman. Keep in mind that there are 4 different airlines that fly to Bozeman on a routine basis, so you have a few additional options to choose from.