Flights from Ontario (ONT) to Seattle (SEA)
starting at $142

Find the Cheapest ONT to SEA Airfares

Departing
Day
Month
Returning
Day
Month
Non stop flights ONT to SEA
American Airlines
from $610
Alaska Airlines
from $271
United Airlines
from $605
One stop flights ONT to SEA
American Airlines
from $215
Alaska Airlines
from $254
United Airlines
from $209

Our Latest Booking for ONT to SEA round trip flights

It took less than 7 minutes for our customer to complete the latest ONT to SEA booking.

The ONT to SEA flight will be operated by Alaska Airlines with a Boeing 737-900.

Flight time from ONT to SEA for this particular option is 150 minutes.

Our flights from ONT to SEA

There are currently 19 direct flights between ONT to SEA each week, operated by 3 airlines.

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

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

The most common aircraft type flying between ONT to SEA is Canadair Regional Jet.

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

Our cheapest flight from ONT to SEA was in July at just $142.

Cheapest Day To Fly from Ontario (ONT) to Seattle (SEA)
Airfares for flights from ONT to SEA 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 ONT to SEA found by Flying.com customers. Fares are subject to change, and may not be available on this route, for all travel dates.
Flights from Ontario (ONT) to Seattle (SEA)
Carrier Mon Tue Wed Thu Fri Sat Sun Earliest
Flight
Latest
Flight
American Airlines132141-06:0016:35
Alaska Airlines1-2164506:0018:00
United Airlines126447306:0019:05
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.