The drive from Sammamish to Seattle takes approximately 19 min, covering 9 miles via I-90. Under normal conditions, expect to spend around $1 on gas.
Travel time can vary — during rush hour or bad weather, the journey may take 29–34 minutes. For the fastest trip, avoid peak commute hours.
Traffic Estimate
🟢 Light traffic
16 min
🔵 Typical
19 min
🔴 Heavy traffic
28 min
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance9 miles (14 km)
Drive Time19 min
RouteI-90
Best TimeEarly morning (6-8 AM)
Fuel Costs
Gas (30 mpg)~0.3 gallons
Est. Cost$1
Best Time to Drive from Sammamish to Seattle
For this shorter drive, the best time to go is early morning (6-8 am). Rush hour (7-9 AM and 4-7 PM) can add significant time on this route. Weekends are generally smoother unless it's a holiday.
🟢 Best:Early morning (6-8 AM)
🔴 Avoid:Rush hour (4-7 PM)
Route Tips: I-90
Plan rest stops every 2-3 hours on longer drives. Check traffic conditions before departure and keep your tank above quarter-full.
This trip can typically be done on a single tank of gas.
Frequently Asked Questions
How long does it take to drive from Sammamish to Seattle?
The drive from Sammamish to Seattle takes approximately 19 min covering 9 miles via I-90. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for Sammamish to Seattle?
At 30 MPG and $3.50/gallon, expect to spend approximately $1 on gas for this 9-mile trip. You'll need about 0.3 gallons of fuel.
What is the best time to drive from Sammamish to Seattle?
Early morning (6-8 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the Sammamish to Seattle route?
This route is primarily toll-free, though some bridges or tunnels may have small fees.
