Flight
Driving
Kennewick to Seattle
Updated: 31 May 2026
The journey from Kennewick to Seattle covers approximately 360 kilometers. Driving is the most popular and convenient option, typically following I-82 and I-90 through the scenic Cascade Mountains. Bus service is also available for those who prefer not to drive. Flying is also an option from the Tri-Cities Airport (PSC) to Seattle-Tacoma International Airport (SEA). You will experience a transition from the high desert of Eastern Washington to the lush, coastal environment of the Puget Sound. Seattle is a major cultural and economic center, making this a popular route.
Total Distance: Driving distance 360 km, air distance 260 km.
Fastest Way
Flight is the fastest, taking roughly 1 hour.
Cheapest Way
Driving is cost-effective for groups, while flights are better for solo travelers.
Compare Kennewick to Seattle Routes
|
Direct
|
Direct
|
|
|---|---|---|
| Duration | 1 hour | 4 hours |
| Avg Price | $150 - $300 | $50 - $90 in fuel |
| Operator | Alaska Airlines | Personal Vehicle |
| Route | PSC to SEA | I-82 W to I-90 W |
| Tip | Direct flights are available and very convenient. | Check mountain pass conditions before departing. |
Travel Tips
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BookingBook flights in advance for better pricing.
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PackingPack a rain jacket, as the weather in Seattle can be unpredictable.
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NavigationUse a GPS app for navigating the city's grid system.
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Mountain PassesCheck Snoqualmie Pass conditions before driving.
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Local EventsCheck the city calendar for festivals that impact travel.
Safety Tips
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Road SafetyBe cautious of snow and ice on mountain passes during winter.
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Weather AlertsMonitor weather reports for potential storms.
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Vehicle SecurityKeep valuables out of sight when parked in public areas.
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HydrationStay hydrated during long drives.
People Also Ask
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Is there a direct flight?Yes, Alaska Airlines offers direct flights from PSC to SEA.
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How long is the drive?The drive typically takes 3.5 to 4.5 hours.
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What is the best route?I-82 to I-90 is the most common route for driving.
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Are there trains?No direct rail service exists between Kennewick and Seattle.
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What is the time difference?There is no time difference between Kennewick and Seattle.
Quick Info
- From Kennewick, Washington, United States
- To Seattle, Washington, United States
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Modes
Best Time to Travel
Spring and Autumn are ideal for enjoying the mild weather and outdoor activities.
Things to Do in Seattle
1
Space Needle
Enjoy panoramic views of the city from this iconic landmark.
2
Pike Place Market
Explore this historic market featuring local food, crafts, and street performers.
3
Museum of Pop Culture
Discover music, science fiction, and pop culture in this unique museum.
4
Seattle Waterfront
Stroll along the waterfront and enjoy views of the Puget Sound.
Tags
Kennewick to Seattle
flights to Seattle
driving WA to Seattle
bus to Seattle
Tri-Cities to Seattle
Seattle travel guide
best travel routes
US travel
