There are Several Ways to Get to Walla Walla
One way is to fly direct to Walla Walla (ALW) from Seattle (SEA). There are only a few flights a day so check that the connections work for you.
Another way is to fly into Pasco, WA (PSC) and rent a car and drive to Walla Walla in 45 minutes. There are more flight options into Pasco.
Or fly into Spokane (GEG) and drive to Walla Walla in 2.5 hours past hilly slopes – a nice drive.
Or fly into Portland, OR (PDX), rent a car and drive about four hours. It is a beautiful drive along the majestic Columbia River.
You could also rent a car at Seattle Airport and drive to Walla Walla in about five hours on the north side of the Columbia River – also a scenic drive.