Is Flying Out of Boise Actually Worth It? Here’s How BOI’s Fares Really Compare

Boise Airport (BOI) is Idaho's only airport among the 100 busiest in the country by passenger volume, and its airfare ranking sits almost exactly at the national midpoint. Only In Your State analyzed recently released Bureau of Transportation Statistics data, and BOI came in at an average of $394.47 per domestic ticket in 2025—ranking 52nd most affordable nationally.

That's $7.47 above the national average of $387—close enough that Boise essentially tracks with the country as a whole. It's not among the nation's bargains, but it's not among the expensive outliers either.

The Idaho Context

Boise Airport ranked 61st nationally for passenger volume, which puts it in the mid-tier of U.S. airports by traffic. It has enough carrier presence to maintain competitive fares but not enough volume to drive the kind of below-average prices seen at Florida's major hubs or Chicago Midway.

Because Boise serves as a primary gateway for southwest Idaho and eastern Oregon, many travelers default to BOI without looking at regional alternatives. However, drive time versus airfare savings is an essential tradeoff to weigh. While major hub airports like Salt Lake City offer a significantly higher volume of direct flights, their higher average fares mean driving extra hours won't necessarily save you money on airfare alone unless you're booking specific ultra-low-cost carrier routes.

There are no other Idaho airports in the national top 100, which means Boise is the only data point available for in-state comparisons. Idaho travelers flying internationally or to major hubs might also consider Salt Lake City International Airport (SLC), which ranked 93rd nationally at $457.57—actually higher than Boise despite being a larger hub. Portland International (PDX) in Oregon averaged $389.93, ranking 46th—essentially at the national average — and serving as another regional option for western Idaho residents.

What Eastern Idaho Travelers Should Know

One airport worth watching for Idaho travelers near the Montana border: Bozeman Yellowstone International Airport (BZN) averaged $395.77 in 2025 but saw the largest fare decrease of any airport in the country that year—down $28.23 from 2024. It's a smaller regional airport (97th by passenger volume) but one that's actively becoming more competitive on price.

This data reflects 2025 averages from the Department of Transportation, released in May 2026. Current fares may be higher due to rising jet fuel costs. Smart booking habits—particularly booking early and staying flexible on dates—can help Idaho travelers find value regardless of departure airport.

Tips for Getting the Best Fares Out of BOI

For Idahoans flying out of Boise Airport, timing your purchase plays a major role in beating the average fare. Because BOI has a solid mix of legacy carriers (such as Delta, United, and Alaska) alongside low-cost options (like Allegiant and Southwest), set fare alerts at least 6 to 8 weeks ahead of domestic travel. Flying on off-peak days—typically Tuesdays and Wednesdays—can also help you land tickets closer to or below the national midpoint.

To get the most from your next departure, explore how to find cheap flights and unexpected ways to cut travel costs to help stretch your budget further once you've already got a head start.

To see how every major airport in the country compares—plus the full methodology behind the data—explore the complete U.S. Airport Cost Rankings for 2026.