Cheap flights from Missoula to Portland from $139

The cheapest month to fly to Portland from Missoula is in September. Flight prices, which tend to average around $197, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until November to fly from Missoula, when ticket prices are also cheap, with an average price of $218.

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as $367. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Saturday, with ticket prices averaging around $528.

The cheapest time of day to fly to Portland is at noon when flights can be purchased for as low as $372. In the morning is when there is more demand to fly to Portland, so prices are often more expensive at around $454 per ticket.

Fly from Missoula Johnson-Bell Field to Portland for the best Missoula Johnson-Bell Field - Portland flight prices

You are more likely to see cheaper flights to Portland from Missoula when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Missoula for as low as $174 on momondo.

You could potentially save up to 8% on your flight if you consider stops on a Missoula to Portland flight.

As of May 2026, prices for Missoula to Portland flights are approximately 18% more expensive when compared to flights at the same time last year.

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Missoula Johnson-Bell Field to Portland

Alaska Airlines, Hawaiian Airlines and Delta are the top three most popular airlines that fly to Portland from Missoula according to our data. Alaska Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 3 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $164.

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 4h 51m.

Salt Lake City (SLC) has the shortest average layover time for this route: 1h 49m.

1 flights are operational daily from Missoula to Portland as of May 2026. The most popular departure time for this route is 1:00PM, with 100% of flights per day taking off in the afternoon.

The number of flights available between Missoula and Portland is 7 per week as of May 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.