Schedule of direct flights from Seattle to Ontario
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Ontario:
Seattle airports overview
Ontario airports overview
Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Seattle to Ontario
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Alternative routes
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Cheapest one way flight
$51
Spirit Airlines
Direct flight
2h 52m
04/25/2025
The cheapest one-way flight from Seattle to Ontario departs on 04/25/2025, is operated by Spirit Airlines and costs $51
Cheapest round trip flight
$97
Frontier Airlines
Direct flight
5h 42m
04/25/2025
The cheapest roundtrip flight from Seattle to Ontario departs on 04/25/2025, is operated by Frontier Airlines and costs $97
The fastest flight
2h 35m
Fastest flight from Seattle to Ontario takes 2h 35m
Direct flights
Several times a week
There are direct flights on this route 4 days a week: Su, Mo, Fr, and Sa
Earliest flight
8:01 AM
Latest flight
9:23 PM
Direct flights count
77
Distance
1557km
Timezone difference
0h
The distance between Seattle and Ontario is 1557km (965 miles).There are 77 direct flights from Seattle to Ontario.Seattle and Ontario are in the same time zone.Flights from Seattle begin at 8:01 AM.The latest flight from Seattle departs at 9:23 PM.
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Seattle to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Seattle to Ontario
Unable to find information about the schedule of direct flights from
Below you will find a list of airlines operating flights on the Seattle — Ontario route and the starting prices for flights of each specific airline on it.
A direct flight is the most convenient and comfortable way to fly from Seattle to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
Seattle — Los Angeles
SEA — LAX
04/24/2025
Departure date
Direct flight
F92176
Starting at $113
Seattle — Los Angeles
SEA — LAX
04/28/2025
Departure date
Direct flight
NK631
Starting at $112
Seattle — Los Angeles
SEA — LAX
04/28/2025
Departure date
Direct flight
HA6773
Starting at $149
Seattle — Los Angeles
SEA — LAX
05/04/2025
Departure date
Direct flight
AS1300
Starting at $196
Seattle — Los Angeles
SEA — LAX
04/20/2025
Departure date
Direct flight
AS1223
Starting at $187
Seattle — Los Angeles
SEA — LAX
04/20/2025
Departure date
Direct flight
UA2127
Starting at $126
Seattle — Los Angeles
SEA — LAX
04/25/2025
Departure date
Direct flight
NK631
Starting at $54
Seattle — Los Angeles
SEA — LAX
05/02/2025
Departure date
Direct flight
NK631
Starting at $154
Seattle — Ontario
SEA — ONT
04/15/2025
Departure date
Direct flight
AS1003
Starting at $237
Seattle — Ontario
SEA — ONT
05/26/2025
Departure date
Direct flight
AS1003
Starting at $105
How much is the cheapest flight ticket from Seattle to Ontario?
The cheapest flight ticket from Seattle to Ontario according to data for the last 48 hours costs $51
When is the best time to buy air tickets on the route Seattle — Ontario?
Often the best time to buy tickets from Seattle to Ontario is 2 months before departure.
When is the cheapest time of year to fly from Seattle to Ontario?
Based on statistics over the past years, the lowest prices for flights from Seattle to Ontario can be found flying in these months: April, May, June.
How long does it take to fly from Seattle to Ontario?
The fastest flights from Seattle to Ontario start from 2 hours 35 minutes in the air.
Which airline can fly direct from Seattle to Ontario?
The following airlines operate direct flights on the route Seattle — Ontario: Frontier Airlines, Spirit Airlines, Hawaiian Airlines
