Ontario > Seattle > United > Flight Schedules & Airfares from ONT to SEA on United
Flight Schedules & Airfares from Ontario (ONT) to Seattle (SEA) on United
United
Fare Compare has compiled a flight listing for all cities served by United.
This page displays a weekly flight schedule of all flights, roundtrip fares and one-way fares for these flights
departing
from Ontario, California (ONT) to
Seattle, Washington (SEA).
Opposite
Direction Flight Schedules - Seattle to Ontario
Roundtrip Fares
The following are roundtrip airfares listed from lowest to highest price from Ontario to Seattle on United. The roundtrip fare class code is listed along with the advance purchase in days, first/last travel time window (no restriction if blank), maximum stay, and a notation of whether or not certain time periods are ineligible (blackouts).
One-Way Fares
The following are one-way airfares from lowest to highest price on United departing from Ontario arriving at Seattle. The one-way fare class code is listed along with the advance purchase in days, first/last departure time period (if any), and a notation of whether or not certain time periods are blacked out.
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