Flights from Seattle (SEA) to Ontario (ONT)
starting at $143

Find the Cheapest SEA to ONT Airfares

Departing
Day
Month
Returning
Day
Month
Non stop flights SEA to ONT
Alaska Airlines
from $271
American Airlines
from $350
United Airlines
from $329
One stop flights SEA to ONT
American Airlines
from $202
Alaska Airlines
from $254
United Airlines
from $209

Our flights from SEA to ONT

There are currently 23 direct flights between SEA to ONT each week, operated by 3 airlines.

You can catch a flight from SEA to ONT on any day of the week.

These airlines operate direct flights from SEA to ONT: Alaska Airlines, American Airlines, United Airlines.

The most common aircraft type flying between SEA to ONT is Airbus A321.

The day with the most flights from SEA to ONT is Monday.

Our cheapest flight from SEA to ONT was in September at just $143.

Cheapest Day To Fly from Seattle (SEA) to Ontario (ONT)
Airfares for flights from SEA to ONT displayed on this page are per person, for economy class e-tickets and include all taxes and fees in USD. They represent historical values for round trip flights from SEA to ONT found by Flying.com customers. Fares are subject to change, and may not be available on this route, for all travel dates.
Flights from Seattle (SEA) to Ontario (ONT)
Carrier Mon Tue Wed Thu Fri Sat Sun Earliest
Flight
Latest
Flight
American Airlines-1113-705:0020:40
Alaska Airlines211662607:4020:40
United Airlines621091161205:0020:40
Disclaimer
Prices displayed on this page are per person, for economy class e-tickets and include all taxes and fees in USD. They represent historical values found by Flying.com customers. Fares are subject to change, and may not be available on all routes, for all travel dates.