Yes, it is one of the most beautiful drives in the US, crossing two mountain ranges.

No, there is no direct passenger rail service from Billings to Seattle.

What is the best stop?

Spokane is the ideal halfway point for food and lodging.

Yes, it is a major interstate, but winter conditions require caution.

How long is the flight?

The flight time is approximately 2 hours.

Billings

Seattle

Flight Driving

Billings to Seattle

Updated: 28 May 2026

The journey from Billings to Seattle spans approximately 850 miles. You can drive west on I-90, passing through Missoula, Coeur d'Alene, and Spokane. This route takes you through the scenic Bitterroot Mountains and across the Cascade Range. Driving takes about 13 to 14 hours. Alternatively, direct or connecting flights are available from Billings Logan International to Seattle-Tacoma International Airport.

Total Distance: 1,370 km driving distance, 900 km air distance.

Fastest Way

Flying is significantly faster, taking only 2 hours in the air.

Cheapest Way

Driving is cheaper for groups, while flying is more efficient for solo travelers.

Compare Billings to Seattle Routes

	Flight Direct	Driving Direct
Duration	2 hours	13 hours 30 mins
Avg Price	$250-$500	$150-$200 in fuel
Operator	Alaska Airlines	Personal Vehicle
Route	BIL to SEA airport.	I-90 West.
Tip	Alaska Airlines offers the most frequent service on this route.	Break the drive into two days by staying overnight in Spokane.

Travel Tips

Snoqualmie Pass
Check pass conditions in winter; it can close due to heavy snow.
Time Zone
You will cross from Mountain Time to Pacific Time; adjust your watch accordingly.
Traffic
Seattle traffic is notoriously heavy; avoid entering the city during rush hours.
Accommodation
Book hotels in Spokane in advance if you plan to split the drive.
Fuel
Gas prices are generally higher in Washington than in Montana.

Safety Tips

Mountain Passes
Be prepared for rapid weather changes in the Cascades.
Driver Fatigue
Do not attempt to drive the full 14 hours in one sitting; stay overnight.
Emergency Kit
Carry extra water and food, especially when crossing the Idaho panhandle.
Speeding
Washington State Patrol is very active on I-90.