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Find Flight Deals from Seattle/Tacoma Intl to Ontario (SEA - ONT)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to Ontario

(Round-trip)
Depart: Tue Jan 27 2015 Return: Sat Jan 31 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
12:20p
SEA
3:09p
2h 49m
nonstop
Depart: Wed Jan 28 2015 Return: Sat Jan 31 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
12:20p
SEA
3:09p
2h 49m
nonstop
Depart: Tue Feb 3 2015 Return: Sat Feb 14 2015 Trip spans 12 days
Multiple Airlines
Multiple Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
1:05a
SEA
7:08a
6h 03m
1 stop
Depart: Wed Feb 4 2015 Return: Wed Feb 11 2015 Trip spans 8 days
Delta
Delta
SEA
12:15p
ONT
4:49p
4h 34m
1 stop
ONT
12:25p
SEA
5:04p
4h 39m
1 stop
Depart: Thu Jan 8 2015 Return: Wed Jan 14 2015 Trip spans 7 days
Delta
Delta
SEA
11:22a
ONT
5:35p
6h 13m
1 stop
ONT
1:15a
SEA
7:29a
6h 14m
1 stop
Depart: Sat Jan 10 2015 Return: Mon Jan 12 2015 Trip spans 3 days
Delta
Delta
SEA
11:25a
ONT
4:43p
5h 18m
1 stop
ONT
11:27a
SEA
4:24p
4h 57m
1 stop
Depart: Sat Jan 17 2015 Return: Mon Jan 19 2015 Trip spans 3 days
Delta
Delta
SEA
11:25a
ONT
4:06p
4h 41m
1 stop
ONT
1:15a
SEA
7:29a
6h 14m
1 stop
Depart: Thu Jan 22 2015 Return: Sat Jan 24 2015 Trip spans 3 days
Delta
Delta
SEA
11:22a
ONT
5:35p
6h 13m
1 stop
ONT
5:10a
SEA
9:58a
4h 48m
1 stop
Depart: Fri Jan 30 2015 Return: Tue Feb 3 2015 Trip spans 5 days
Delta
Delta
SEA
11:22a
ONT
5:35p
6h 13m
1 stop
ONT
12:25p
SEA
5:04p
4h 39m
1 stop
Depart: Thu Feb 5 2015 Return: Wed Feb 11 2015 Trip spans 7 days
Delta
Delta
SEA
11:22a
ONT
5:35p
6h 13m
1 stop
ONT
1:15a
SEA
7:29a
6h 14m
1 stop
Depart: Sat Feb 7 2015 Return: Mon Feb 9 2015 Trip spans 3 days
Delta
Delta
SEA
11:25a
ONT
4:43p
5h 18m
1 stop
ONT
11:27a
SEA
6:16p
6h 49m
1 stop
Depart: Wed Jan 21 2015 Return: Sat Jan 24 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
12:20p
SEA
3:09p
2h 49m
nonstop
Depart: Sat Jan 24 2015 Return: Wed Jan 28 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
6:10a
SEA
8:53a
2h 43m
nonstop
Depart: Sun Jan 25 2015 Return: Wed Jan 28 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
6:10a
SEA
8:53a
2h 43m
nonstop
Depart: Sat Jan 31 2015 Return: Tue Feb 3 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
9:15a
ONT
11:45a
2h 30m
nonstop
ONT
12:20p
SEA
3:09p
2h 49m
nonstop
Depart: Sun Feb 1 2015 Return: Tue Feb 3 2015 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
3:00a
ONT
5:38a
2h 38m
nonstop
ONT
12:20p
SEA
3:09p
2h 49m
nonstop
Depart: Wed Jan 7 2015 Return: Sat Jan 10 2015 Trip spans 4 days
US Airways
US Airways
SEA
6:30a
ONT
1:46p
7h 16m
1 stop
ONT
1:30a
SEA
8:39a
7h 09m
1 stop
Depart: Mon Jan 5 2015 Return: Mon Jan 12 2015 Trip spans 8 days
Delta
Delta
SEA
11:22a
ONT
5:35p
6h 13m
1 stop
ONT
11:27a
SEA
6:16p
6h 49m
1 stop
Depart: Tue Mar 10 2015 Return: Sat Mar 14 2015 Trip spans 5 days
American Airlines
American Airlines
SEA
3:15a
ONT
5:44a
2h 29m
nonstop
ONT
2:20a
SEA
4:58a
2h 38m
nonstop
Depart: Wed Feb 18 2015 Return: Sat Feb 21 2015 Trip spans 4 days
United
United
SEA
7:55a
ONT
3:25p
7h 30m
1 stop
ONT
12:30a
SEA
6:19a
5h 49m
1 stop
Change your search
Direct flights SEA to ONT on Delta
Flight # Depart SEA Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
7535 1:55 pm 4:20 pm Jan 5 - Jan 5
7535 2:15 pm 4:45 pm Jan 11 - Feb 7
7535 2:15 pm 4:44 pm Jan 6 - Jan 10
Airports
Origin

Seattle
$174
Destination

Ontario
$174