Is there a direct flight?

Yes, there are multiple direct flights daily from Seattle to Boise.

How long is the drive?

The drive takes approximately 9 hours, depending on traffic.

What is the best route?

Taking I-90 to I-84 is the most direct route.

Amtrak offers service, but it is not the most practical for this distance.

What is the best time to visit?

Spring and fall offer the most comfortable temperatures.

Monroe

Boise

Flight Driving

Monroe to Boise

Updated: 31 May 2026

The journey from Monroe to Boise is a regional trip across the Pacific Northwest. Flying from Seattle-Tacoma International Airport (SEA) to Boise Airport (BOI) is the most practical method, taking about 1.5 hours of flight time. Driving is a major undertaking, covering over 800 kilometers and taking roughly 8 to 10 hours of driving time via I-90 and I-84. This route takes you through the scenic landscapes of Washington, Oregon, and Idaho.

Total Distance: 800 km driving; 600 km air distance.

Fastest Way

Flying from SEA to BOI is the fastest, taking about 1.5 hours.

Cheapest Way

Driving is cheaper for groups, but flying is significantly faster.

Compare Monroe to Boise Routes

	Flight Direct	Driving Direct
Duration	1 hour 30 mins	9 hours
Avg Price	$100 - $250	$100 - $150 in fuel
Operator	Alaska Airlines	Personal Vehicle
Route	SEA to BOI	I-90 E to I-84 E
Tip	Flights are frequent and very convenient.	Expect to spend at least one day on the road.

Travel Tips

Airport Arrival
Arrive at SEA at least two hours before your flight.
Road Trip Breaks
Plan stops in cities like Kennewick and Pendleton.
Packing
Bring layers, as the weather in Boise can be cool and unpredictable.
Local Transit
Boise is best explored by car, though public transit is available.
Dining
Try the local restaurants in the downtown and Hyde Park areas.