Leaving on a Saturday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 118% on the overall cost on flights from Phoenix to Walla Walla.
One of the essential ways to save on airfare from Phoenix to Walla Walla is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.