Cheap flights from Portland to Kalispell from $150

The month of December is, on average, the cheapest month to fly to Kalispell from Portland, with most prices found around $177. If you aren’t able to travel to Kalispell during the month of December, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $197.

The cheapest day to depart from Portland to Kalispell is on a Wednesday. Travelers who choose to depart for Kalispell on a Wednesday will often find tickets for as low as $248. The most expensive day to fly to Kalispell is Saturday, with ticket prices averaging around $358.

According to our data, the cheapest time of day to fly to Kalispell is in the afternoon. momondo users have found flights departing from Portland to Kalispell in the afternoon for as low as $217. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Kalispell, so prices are often more expensive at around $326 per ticket.

Fly from Portland to Kalispell Glacier Park for the best Portland - Kalispell Glacier Park flight prices

You are more likely to see cheaper flights to Kalispell from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Kalispell for around $305 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kalispell from Portland for as low as $177 on momondo.

There are 2 cabin classes available to choose from on Portland to Kalispell Glacier Park 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 16% on your flight if you consider stops on a Portland to Kalispell flight.

As of March 2026, prices for Portland to Kalispell flights are approximately 20% more expensive when compared to flights at the same time last year.

Alaska Airlines, Delta, and Allegiant Air are the most popular carriers operating from Portland to Kalispell Glacier Park

Alaska Airlines, Hawaiian Airlines and Delta are the top three most popular airlines that fly to Kalispell from Portland according to our data. Alaska Airlines is the first choice among our users, with 81% of people opting to fly with this airline when traveling to Kalispell. Keep in mind that there are 3 different airlines that fly to Kalispell on a routine basis, so you have a few additional options to choose from.

The number of flights available between Portland and Kalispell is 2 per day as of March 2026. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.

As of March 2026, there are 14 flights per week flying from Portland to Kalispell. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.