The cheapest and fastest buses from Portland, OR to SeaTac, WA
Cheapest price
$43
Average price
$48
Fastest journey
3 h 10 m
Average duration
3 h 13 m
Buses per day
2
Distance
216 km
The best way to find a cheap bus ticket from Portland, OR to SeaTac, WA is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from Portland, OR to SeaTac, WA will cost around $48 if you buy it on the day, but the cheapest tickets can be found for only $43.
Of the 2 buses that leave Portland, OR for SeaTac, WA on Wed, Jun 17, 2 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
On Wed, Jun 17 the direct buses cover the 216 km distance in an average of 3 h 13 m but if you time it right, some buses will get you there in just 3 h 10 m .
On Wed, Jun 17 the slowest buses will take 3 h 15 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.
FlixBus7:10 PM3h10Portland, NW Station Way (Station Place Parking Garage), OR10:20 PMSeattle, SeaTac Airport Terminal - Bay 2$431One-way0 transfers
FlixBus6:20 AM3h15Portland, NW Station Way (Station Place Parking Garage), OR9:35 AMSeattle, SeaTac Airport Terminal - Bay 2$531One-way0 transfers
FlixBus7:10 PM3h10Portland, NW Station Way (Station Place Parking Garage), OR10:20 PMSeattle, SeaTac Airport Terminal - Bay 2$431One-way0 transfers
FlixBus6:20 AM3h15Portland, NW Station Way (Station Place Parking Garage), OR9:35 AMSeattle, SeaTac Airport Terminal - Bay 2$531One-way0 transfers
Travel Information
Compare bus, train, and flight for Portland, OR to SeaTac, WA
Omio recommends booking the bus as it is the most popular option from Portland, OR to SeaTac, WA among Omio's users. If you are prioritising price take the train with prices starting from $27. For those with little time consider booking a flight which can get you there in 1h 2m. The ticket price range depends on the travel mode: a train costs an average of $27, and a flight costs an average of $110.
Distance: 134 miles (216 km)
Compare bus with
Most popular Bus | Train | Flight | Driving |
|---|---|---|---|
$39 Average price | $36 Average price Cheapest | $237 Average price | $34 Average price (fuel + tolls) |
3h 48m Average total duration 3h 18m Onboard + 30m Additional time* | 3h 34m Average total duration 3h 4m Onboard + 30m Additional time* | 4h 2m Average total duration Fastest 1h 2m Onboard + 3h 0m Additional time* | 3h 27m Average total duration (door-to-door) |
Direct Options | Direct Options | Direct Options | Direct Options |
This is compared to other travel options from Portland, OR to SeaTac, WA:
A train is $3 (€3) less than a bus for this route with tickets for a bus from Portland, OR to SeaTac, WA costing on average $39 (€32).
A train is $201 (€163) less than a flight for this route with tickets for a flight from Portland, OR to SeaTac, WA costing on average $237 (€192).
Other travel options to SeaTac, WA take longer:
Train takes on average 3h 4m.
Bus takes on average 3h 18m.
You'll arrive about 9m sooner (3h 18m by bus vs 3h 27m by car). Tickets start at around $39 (€32) compared to roughly $34 (€27) in fuel and tolls — a bit more, but you're getting time back, skipping traffic and parking, and you can work or rest on board.
Direct coaches are operated by FlixBus.
Driving makes more sense if you're travelling as a group (where fuel splits across several people), want flexibility on timing, or plan to stop en route.
Portland, OR to SeaTac, WA Bus Timetables
| Operator | Departure Time | Arrival Time | Duration | Departure days | Cheapest price |
|---|---|---|---|---|---|
Operator FlixBus | Departure Time 02:10AM | Arrival Time 05:20AM | Duration 3h10 | Departure days Tue | Cheapest price $40 |
Operator FlixBus | Departure Time 03:10AM | Arrival Time 06:20AM | Duration 3h10 | Departure days Tue | Cheapest price $40 |
Operator FlixBus | Departure Time 06:20AM | Arrival Time 09:35AM | Duration 3h15 | Departure days Wed, Thu | Cheapest price $53 |
Operator FlixBus | Departure Time 07:00AM | Arrival Time 10:15AM | Duration 3h15 | Departure days Fri, Sat, Sun | Cheapest price $62 |
Operator FlixBus | Departure Time 02:20PM | Arrival Time 05:40PM | Duration 3h20 | Departure days Fri, Sat, Sun | Cheapest price $59 |
Operator FlixBus | Departure Time 07:10PM | Arrival Time 10:20PM | Duration 3h10 | Departure days Wed, Fri, Sat, Sun | Cheapest price $43 |
Operator Greyhound | Departure Time 10:45PM | Arrival Time 01:35AM | Duration 2h50 | Departure days Tue | Cheapest price $51 |
Live departures
Portland, OR to SeaTac, WA bus times
The table below shows live departures for Portland, OR to SeaTac, WA buses for today, Tuesday, June 16. You can also manually refresh the results below to see updated bus journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
![]() | 10:45 PM Portland, NW Station Way (Station Place Parking Garage), OR | 2h50 | 1:35 AM Seattle, S Royal Brougham Way / 6th Avenue South (Bus Station) | 0 transfersDirect | |
| Wednesday, June 17 | |||||
FlixBus | 6:20 AM Portland, NW Station Way (Station Place Parking Garage), OR | 3h15 | 9:35 AM Seattle, SeaTac Airport Terminal - Bay 2 | 0 transfersDirect | |
This is the last bus of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets Portland, OR to SeaTac, WA by bus, train, or flight
Compare bus, train, and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
Jun 17
Jun 18
Jun 19
Jun 20
Jun 21
Jun 22
Jun 23
Why should you book Portland, OR to SeaTac, WA buses with Omio?
Why book with Omio vs FlixBus?
- Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
- Compare all your options: Omio allows you to compare FlixBus with all available travel options, which are bus, train and flight to ensure you get the best deal for traveling from Portland, OR to SeaTac, WA.
Why book with Omio over Wanderu or Trainline?
- Multiple modes of transport: Omio allows you to compare travel options including bus, train and flight to find the ideal travel option from Portland, OR to SeaTac, WA.
Journey information
Overview: Bus from Portland, OR to SeaTac, WA
Buses from Portland, OR to SeaTac, WA run on average 4 times per day, taking around 3h 18m. Cheap bus tickets for this journey start at $25 (€20) if you book in advance.
There are 4 buses per day. The earliest bus runs at 07:00, the last at 23:10. The fastest bus covers the 134 miles (216 km) distance in 3h 10m.
Distance 134 miles (216 km) |
Average bus duration 3h 18m |
Cheapest ticket price $25 (€20) |
Buses per day 4 |
Direct buses 4 |
Fastest bus 3h 10m |
First bus 7:00 AM |
Last bus 11:10 PM |
Cheapest Month Oct |
Cheapest Day Tue |
High Season Jan - Mar |
Low Season Apr - Jun |
Busiest Day Tue |
Least Busy Day Thu |
Best time to book 6 days |
Bus providers: FlixBus from Portland, OR to SeaTac, WAYou can travel by bus between Portland, OR to SeaTac, WA with FlixBus for as low as $25 (€20). When you search for schedules and tickets, Omio will show you the best journey
FlixBus
FAQs: Bus from Portland, OR to SeaTac, WA
Find answers to the most common questions about traveling from Portland, OR to SeaTac, WA by bus. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest bus, the cheapest option, or tips for making the most of your visit at SeaTac, WA, this guide helps you travel smarter and with confidence.

- FlixBus
- Assistance
- Priority boarding
- Wheelchair-accessible buses.
- FlixBus
- You can cancel your ticket up to 15 minutes before departure and receive a voucher for future travel. Refund requests for delays over 120 minutes are possible.
- FlixBus
- One carry-on bag up to 7kg (42x30x18 cm) and one checked bag up to 20kg (80x50x30 cm).
- FlixBus
- Additional luggage can be purchased for a fee.
- FlixBus
- Small pets in carriers allowed
- guide dogs travel for free.
popular bus stations
Popular bus stations from Portland, OR to SeaTac, WA
Most popular bus connections from Portland, OR
More options for your journey from Portland, OR to SeaTac, WA
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