Is there a train from Boise to Seattle?

No, there is no direct passenger rail service between these cities.

How long is the drive?

The drive takes about 8.5 hours via I-84 and I-90.

Are there direct flights?

Yes, Alaska Airlines operates multiple daily flights.

What is the best time to drive?

Summer months offer the safest and most scenic driving conditions.

Yes, the crossing of the Cascade Mountains is very beautiful.

Boise

Seattle

Flight Driving

Boise to Seattle

Updated: 31 May 2026

The journey from Boise to Seattle covers approximately 800 km. Driving via I-84 and I-90 takes about 8 to 9 hours, crossing the scenic Blue Mountains and the Columbia River Basin. Alternatively, direct flights from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA) take about 90 minutes. This route connects the high desert of Idaho with the lush, coastal environment of the Pacific Northwest. Be prepared for significant elevation changes and potential weather shifts.

Total Distance: 800 km driving, 650 km air distance.

Fastest Way

Flight from BOI to SEA takes 90 minutes, saving significant time over driving.

Cheapest Way

Driving is the most economical choice for individuals and families.

Compare Boise to Seattle Routes

	Flight Direct	Driving Direct
Duration	1 hour 30 mins	8 hours 30 mins
Avg Price	$150 - $400	$90 - $150 in fuel
Operator	Alaska Airlines	Personal Vehicle
Route	BOI to SEA.	I-84 W to I-90 W.
Tip	Alaska Airlines offers frequent daily non-stop flights.	The drive through Snoqualmie Pass can be challenging in winter.

Travel Tips

Mountain Passes
Check WSDOT for Snoqualmie Pass conditions before driving in winter.
Traffic
Expect heavy traffic in the Seattle metro area during morning and evening commutes.
Airport Transit
Use the Link Light Rail from SEA airport to reach downtown Seattle quickly.
Packing
Bring a waterproof jacket, as rain is common in Seattle year-round.
Booking
Book flights at least two weeks in advance for better pricing.

Safety Tips

Winter Driving
Carry tire chains if traveling through the Cascades between November and April.
Visibility
Fog can be dense in the Columbia River Basin; use headlights.
Fatigue
The drive is long; stop in Ellensburg or Kennewick to rest.
Emergency Kit
Keep a winter emergency kit in your car during the colder months.