How long is the flight from Ontario to Seattle?

ONT–SEA is about 2h 23m nonstop, covering 1,540 km (957 mi).

Which airlines fly nonstop from Ontario to Seattle?

Alaska Airlines, Delta Air Lines, Frontier Airlines operate this route nonstop.

ONTSEA

Ontario International Airport (Ontario, United States) → Seattle–Tacoma International Airport (Seattle, United States)

Live schedule data isn't available for this route right now, but it's flown nonstop by Alaska Airlines, Delta Air Lines, Frontier Airlines.

How long is the flight from Ontario to Seattle?: ONT–SEA is about 2h 23m nonstop, covering 1,540 km (957 mi).
Which airlines fly nonstop from Ontario to Seattle?: Alaska Airlines, Delta Air Lines, Frontier Airlines operate this route nonstop.