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Outbound flight: 05/05/23
17:45 SEA
20:15 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Alaska Airlines
$99
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Outbound flight: 05/05/23
19:51 SEA
22:28 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Delta Air Lines
$103
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Outbound flight: 07/20/23
21:17 SEA
23:56 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Delta Air Lines
$150
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Outbound flight: 04/17/23
12:02 SEA
21:57 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
1 Stopover
Frontier Airlines
Return flight: 04/18/23
12:17 ONT
21:26 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
1 Stopover
Frontier Airlines
$176
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Outbound flight: 04/17/23
08:43 SEA
11:28 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Delta Air Lines
Return flight: 04/18/23
09:55 ONT
12:54 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
direct
Delta Air Lines
$188
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Outbound flight: 04/17/23
19:51 SEA
22:28 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Delta Air Lines
Return flight: 04/18/23
19:17 ONT
22:14 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
direct
Delta Air Lines
$188
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Outbound flight: 04/17/23
21:30 SEA
23:59 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Alaska Airlines
Return flight: 04/18/23
06:00 ONT
08:59 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
direct
Alaska Airlines
$189
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Outbound flight: 04/17/23
06:00 SEA
08:30 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Alaska Airlines
Return flight: 04/18/23
21:55 ONT
00:42 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
direct
Alaska Airlines
$189
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Outbound flight: 04/16/23
21:30 SEA
23:59 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Alaska Airlines
Return flight: 04/17/23
06:00 ONT
08:55 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
direct
Alaska Airlines
$189
Check
Outbound flight: 04/17/23
13:35 SEA
16:05 ONT
Seattle-Tacoma International Airport, WA
Ontario-CA
direct
Alaska Airlines
Return flight: 04/18/23
19:50 ONT
00:32 SEA
Ontario-CA
Seattle-Tacoma International Airport, WA
1 Stopover
Spirit Airlines
$195
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Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Seattle Tacoma to Ontario

Favorite airline: United Airlines
81 % of flights booked on the route from Seattle-Tacoma to Ontario are booked with United Airlines and Alaska Airlines.
United Airlines
45 %
Alaska Airlines
36 %
Direct flights are cheaper
Compared to direct flights, flights with a stopover on this route are on average 35 % more expensive.
non stop flight
1 stop
02h 35min
03h 58min
$94
$144
Favourite connection: via San Francisco
On this route, flights with a stopover in San Francisco are the most popular.
Route
bookings
1 stopover San Francisco International Airport, CA
04h 44min, from $218
45 %
Direct flights
02h 35min, from $94
36 %
1 stopover Portland International Airport, Oregon
03h 58min, from $144
18 %
Flight information Seattle-Tacoma - Ontario
Alternative flight routes
Cheap direct flights
Flight details Seattle-Tacoma - Ontario
  • Flight duration: min. 02:30 / max. 03:20
  • Distance: 1542 km
  • Flights per week: 23
  • Return flight duration: min. 02:45 / max. 08:05
Top Flight Routes