Best way to travel between

Portland
Seattle
Travel Modes
Price
Distance
Duration
CO2
drive
$22.0
280.78 km
3h 6mins
35.94 kgs
 
train
$35.0
293.55 km
4h 10mins
15.56 kgs
 
bus
$35.0
291.49 km
4h 7mins
8.74 kgs
 
flight
$144.0
248.88 km
2h 57mins
26.88 kgs
 
Tranport Distance Time(hrs) Cost(local) Cost(usd)
Drive 280.78 km 3h 6mins 22 USD 22.0
Train 293.55 km 4h 10mins 35 USD 35.0
Bus 291.49 km 4h 7mins 35 USD 35.0
Flight 248.88 km 2h 57mins 144 USD 144.0
Take Car from Portland to Seattle
Time: 3h 6mins Cost: 22 USD; $ 19.8 - 24.2 USD CO2 Emission: 36.05 kgs
Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Portland and Seattle is to travel by car/taxi, which will cost about 22 USD or 19.80 USD.