Cheapest€18.88
- wsdot Apple Line AL334806:254h 45m11:10Seattle King StreetWest Richland Transit Center
Door to door 5h 29mCO2 8.7 kgChanges 0Changeable for a fee
Seattle to Tri-Cities bus
Buses from Seattle to Tri-Cities start at €21.08 and take 5h 29m at their fastest.
The Buses from Seattle to Tri-Cities starts at €21.08 and takes 5h 29m door to door, run by 1 operator over 324 km, with around 2 departures a day. Fares bottom out about 90 days before departure.
- 5h 29mDoor to door
- 4h 45mMoving
- €21.08From
- 8.7 kgCO2
The cheapest and the fastest on September 28, 2026
Two journeys we can sell today, with the service number each operator files them under.
Bus operators
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest | Typical speed | Flexibility | On board |
|---|---|---|---|---|---|
| wsdot Apple Line | €18.88 | 5h 1m | 72 km/h | Changeable | Power outlets, Restrooms, Wi-Fi |
The bus gets you into Tri-Cities. It does not get you a bed, and neither do we.
Where to stay in Tri-Cities
Filter by neighborhood and by nightly price, and the map tells you what is a walk and what is a cab.
Search Tri-Cities on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Seattle to Tri-Cities
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €15.5890 days
- €15.5860 days
- €17.2345 days
- €18.8830 days
- €22.7321 days
- €22.1814 days
- €21.637 days
- €30.983 days
- €47.641 days
- Cheapest lead time
- Fares bottom out around 90 days ahead, at €15.58.
- How much it moves
- The gap between the cheapest and most expensive lead time is 206 percent. The most expensive point is €47.64, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 90 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €29.88Sun
- €23.83Mon
- €21.08Tue
- €22.18Wed
- €27.68Thu
- €23.83Fri
- €26.03Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Seattle
Bus
- Seattle King Street
- Seattle Greyhound Station
Tri-Cities
Bus
- West Richland Transit Center
- Three Rivers Transit Center
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 33% of the services we sell on this corridor run through without a change. The remaining 67% involve one connection.
- How far it really runs
- The route covers 324 km against 282 km in a straight line, a detour of 15 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Tacoma, Spokane. The gap between arriving and leaving is 46 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 20 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Seattle at 06:25 and the last at 07:30, across 2 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Seattle to Tri-Cities
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Coach from Seattle to Tri-Cities take?
The Coach from Seattle to Tri-Cities takes 5h 29m door to door, of which 4h 45m is spent moving. The route runs 324 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Coach from Seattle to Tri-Cities cost?
The Coach from Seattle to Tri-Cities starts at €21.08 for one passenger, checked on September 28, 2026. A typical fare is €23.83. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Coach from Seattle to Tri-Cities?
1 operators run the Coach from Seattle to Tri-Cities: wsdot Apple Line. Between them they file around 2 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Coach from Seattle to Tri-Cities use?
The Coach from Seattle to Tri-Cities leaves from Seattle King Street and arrives at West Richland Transit Center. Allow about 44m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Coach from Seattle to Tri-Cities?
Fares for the Coach from Seattle to Tri-Cities bottom out around 90 days ahead, at €15.58. The gap between the cheapest and most expensive lead time across the window is 206 percent, measured on September 28, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Coach from Seattle to Tri-Cities produce?
The Coach from Seattle to Tri-Cities produces about 8.7 kg of CO2 per passenger over 324 km, which works out at roughly 27 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
What is provided on board the Coach from Seattle to Tri-Cities?
Operators on the Coach from Seattle to Tri-Cities publish Power outlets, Restrooms, Wi-Fi. That is what 1 carriers on this corridor state about their own fleets, across a journey of 5h 29m door to door. Where a carrier publishes nothing, this page lists nothing for it.
Where these numbers come from
Derived from service area No carrier record names this exact pair. The operators listed publish a service area covering both places at a distance their mode plausibly carries people, which is evidence that the corridor is served and not evidence of a specific service. Pages state which, because presenting the two as the same thing would be dishonest.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Seattle to Tri-Cities on September 9, 2026: 324 km of route against 282 km in a straight line, 2 services a day, 1 operators, a cheapest fare of €21.08, and 5h 29m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
Related journeys
The bus is the simple part. What you do once you are in Tri-Cities is somebody else's catalog.
Things to do in Tri-Cities
Day trips that leave Tri-Cities in the morning and cover a good part of United States by evening.
See Tri-Cities on GetYourGuideOr browse Viator
Partner links. We do not sell tours or tickets. We earn a commission on a booking, and it never changes the price.