Seattle to Portland Freight
Full truckload and LTL on the I-5 corridor — what actually sets the rate, and how to get a number you can plan against.
Seattle to Portland is about 175 miles of I-5 — roughly three hours of driving in clear conditions. That makes it one of the busiest short-haul lanes in the Pacific Northwest, and one of the ones shippers most often overpay on, because a short lane does not price like a long one.
On a long haul, mileage dominates the rate. On a lane this short, the fixed costs do: the time spent loading and unloading, the driver's day, whether the truck has anything to carry on the way back. Two quotes for the same Seattle-Portland load can differ substantially and both be honest — one carrier has a backhaul out of Portland and the other is running home empty. That is why we would rather ask you a few questions than publish a rate card that would be wrong for most of the freight it quoted.
SeaSound Transport runs this corridor as an FMCSA-authorized interstate carrier, USDOT #4061311 and MC-1541062. That authority matters here specifically: a carrier with Washington intrastate authority alone cannot legally take your freight across the Columbia, and it is worth confirming before you book.
What actually sets your rate
These are the variables we ask about, and the reason a real quote needs a short conversation rather than a form that spits out a number.
FTL or LTL
Whether you need the whole trailer or are paying only for the space you use. Below roughly six pallets, LTL usually wins.
Weight and pallet count
LTL pricing runs on freight class, dimensions and weight — not just how many pallets you have.
Backhaul availability
The biggest swing factor on a short lane. A truck with a return load prices very differently from one deadheading home.
Fuel at time of booking
Fuel surcharges move with the market. A quote given six weeks out is a guess about diesel, not a price.
Accessorials
Liftgate, inside delivery, residential access, detention at the dock. Individually small, collectively the difference between quotes.
Timing and flexibility
A firm same-day window costs more than a two-day one. If your delivery date has give in it, say so — it is worth money.
What we run on the corridor
- Full truckload (FTL) Seattle to Portland
- Less-than-truckload (LTL) consolidation
- 20', 40', 45' and 53' container transport
- Port-direct container runs south from Seattle or Tacoma
- Intermediate stops — Tacoma, Olympia, Centralia, Longview
- Vancouver WA and Portland metro delivery
- Northbound return freight from Oregon
- Scheduled recurring lane volume
- 24/7 dispatch
Getting a real quote
Send the shipment details
Pickup and delivery addresses, what the freight is, weight and pallet count, and the date it has to land. Call (206) 427-6615 or use the contact form.
We price it against the actual lane
Including whether we have a backhaul, which is the single biggest reason two honest quotes on this lane differ. If LTL is cheaper for you than a truckload, we will say so.
Booked, moved, confirmed
A firm pickup window, a dedicated unit, and delivery confirmation — with updates coming to you rather than waiting to be chased.
Common questions
How much does it cost to ship freight from Seattle to Portland?
There is no honest flat answer, and any carrier who gives you one without asking questions is guessing. The lane is roughly 175 miles down I-5, which is short enough that fixed costs — loading, waiting, the driver's day — matter as much as the mileage. What moves your number is whether it is full truckload or LTL, the weight and pallet count, whether we have a backhaul, fuel at the time of booking, and accessorials like liftgate, inside delivery or detention. Send us the shipment and you get a real quote rather than a range.
Should I book full truckload or LTL on this lane?
Rough guide: under about six pallets, LTL is usually cheaper because you are only paying for the space you use. Above that, or when the freight is fragile, time-critical or you do not want it handled at a cross-dock, full truckload often wins even at a higher headline rate. On a lane this short the extra handling time in LTL can also cost you a day. Tell us the pallet count and we will tell you which way it should go, including when that is the cheaper answer for you.
How long does the Seattle to Portland run take?
The drive is about three hours in clear conditions. In practice the transit time is set by pickup and delivery windows, not the highway — the I-5 approach through Tacoma and the Vancouver-Portland river crossings are the parts that vary. A full truckload booked with a firm pickup window is typically a same-day or next-day delivery; LTL takes longer because the freight is consolidated.
Are you authorized to cross into Oregon?
Yes. SeaSound Transport LLC is an FMCSA-authorized interstate carrier, USDOT #4061311 and MC-1541062, active and authorized for property. Some Washington carriers hold intrastate authority only, which is worth checking before you book a lane that crosses the Columbia.
Can you handle containers on this lane, not just palletised freight?
Yes — 20', 40', 45' and 53'. A container that lands at Seattle Harbor or the Port of Tacoma does not have to be transloaded before it heads south. We can pull it at the terminal and run it down the corridor.
What are the main stops along the corridor?
Southbound from Seattle the I-5 corridor runs through Tacoma, Olympia, Centralia and Chehalis, then Kelso and Longview, then Vancouver, Washington before crossing the Columbia into Portland. We serve freight to and from points along it, not only the two endpoints.
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USDOT 4061311 • MC-1541062 • Interstate Authorized