Cheap flights from Portland to Boise from $94

The month of April is, on average, the cheapest month to fly to Boise from Portland, with most prices found around $192. If you aren’t able to travel during the month of April, then book flights to Boise from Portland during February instead. Flights to Boise in February, while not as cheap as those in April, still average around $207.

Our data shows that Wednesday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $255. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $348. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

Our data shows that the cheapest Portland to Boise flights are usually those with departure times in the evening. Our users have found flights to Boise in the evening for as low as $258. In the afternoon is when there is more demand to fly to Boise, so prices are often more expensive at around $299 per ticket.

Fly from Portland to Boise Air Term. Gowen Fld for the best Portland - Boise Air Term. Gowen Fld flight prices

You are more likely to see cheaper flights to Boise from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $268 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Portland for as low as $176 on momondo.

You could potentially save up to 18% on your flight if you consider stops on a Portland to Boise flight.

As of May 2026, prices for Portland to Boise flights are approximately 8% more expensive when compared to flights at the same time last year.

Southwest and United Airlines are the most popular carriers operating from Portland to Boise Air Term. Gowen Fld

Alaska Airlines, Hawaiian Airlines and Delta are the top three most popular airlines that fly to Boise from Portland according to our data. Alaska Airlines is the first choice among our users, with 82% of people opting to fly with this airline when traveling to Boise. Keep in mind that there are 3 different airlines that fly to Boise on a routine basis, so you have a few additional options to choose from.

As of May 2026, 3 flights take off from Portland and land in Boise each day. The most common flight departure time for this route is 9:00PM, with 43% of daily flights taking off at noon.

As of May 2026, 22 flights take off from Portland and land in Boise each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.