The distance from Portland International Airport to Boise, Idaho is:

425 miles / 684 km driving

342 miles / 550 km flying

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Distance from PDX to Boise, ID

The total driving distance from PDX to Boise, ID is 425 miles or 684 kilometers.

The total straight line flight distance from PDX to Boise, ID is 342 miles.

This is equivalent to 550 kilometers or 297 nautical miles.

Your trip begins at Portland International Airport in Portland, Oregon. It ends in Boise, Idaho.

Your flight direction from PDX to Boise, ID is East (111 degrees from North).

The distance calculator helps you figure out how far it is to get from PDX to Boise, ID. It does this by computing the straight line flying distance ("as the crow flies") and the driving distance if the route is drivable. It uses all this data to compute the total travel mileage.

Portland International Airport

City: Portland
State: Oregon
Zip code: 97218
Country: United States
Category: airports

Boise, Idaho

City: Boise
State: Idaho
Country: United States
Category: cities

Distance calculator

Travelmath helps you find distances based on actual road trip directions, or the straight line flight distance. You can get the distance between cities, airports, states, countries, or zip codes to figure out the best route to travel to your destination. Compare the results to the straight line distance to determine whether it's better to drive or fly. The database uses the latitude and longitude of each location to calculate distance using the great circle distance formula. The calculation is done using the Vincenty algorithm and the WGS84 ellipsoid model of the Earth, which is the same one used by most GPS receivers. This gives you the flying distance "as the crow flies." Find your flight distances quickly to estimate the number of frequent flyer miles you'll accumulate. Or ask how far is it between cities to solve your homework problems. You can lookup U.S. cities, or expand your search to get the world distance for international trips. You can also print out pages with a travel map.