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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: Sat Apr 18 2015 Return: Tue May 5 2015 Trip spans 18 days
US Airways
US Airways
SEA
11:00a
ONT
5:06p
6h 06m
1 stop
ONT
8:35a
SEA
3:38p
7h 03m
1 stop
Depart: Tue Apr 21 2015 Return: Wed May 6 2015 Trip spans 16 days
US Airways
US Airways
SEA
11:00a
ONT
5:06p
6h 06m
1 stop
ONT
6:00a
SEA
12:52p
6h 52m
1 stop
Depart: Tue Apr 28 2015 Return: Wed Apr 29 2015 Trip spans 2 days
US Airways
US Airways
SEA
11:00a
ONT
5:06p
6h 06m
1 stop
ONT
8:35a
SEA
3:38p
7h 03m
1 stop
Depart: Wed Apr 8 2015 Return: Tue Apr 14 2015 Trip spans 7 days
United
United
SEA
2:41p
ONT
8:09p
5h 28m
1 stop
ONT
3:18p
SEA
8:46p
5h 28m
1 stop
Depart: Wed Sep 2 2015 Return: Wed Sep 9 2015 Trip spans 8 days
Delta
Delta
SEA
2:15p
ONT
6:26p
4h 11m
1 stop
ONT
2:05a
SEA
8:05a
6h 00m
1 stop
Depart: Mon Apr 13 2015 Return: Tue Apr 14 2015 Trip spans 2 days
United
United
SEA
11:27a
ONT
4:09p
4h 42m
1 stop
ONT
4:39p
SEA
8:46p
4h 07m
1 stop
Depart: Tue Apr 14 2015 Return: Thu Apr 16 2015 Trip spans 3 days
United
United
SEA
3:25a
ONT
9:36a
6h 11m
1 stop
ONT
3:18p
SEA
8:45p
5h 27m
1 stop
Depart: Wed Apr 15 2015 Return: Thu Apr 16 2015 Trip spans 2 days
United
United
SEA
11:32a
ONT
4:09p
4h 37m
1 stop
ONT
3:18p
SEA
8:45p
5h 27m
1 stop
Depart: Sun Apr 19 2015 Return: Mon May 4 2015 Trip spans 16 days
United
United
SEA
1:28a
ONT
6:15a
4h 47m
1 stop
ONT
1:53p
SEA
5:56p
4h 03m
1 stop
Depart: Mon Apr 20 2015 Return: Tue Apr 21 2015 Trip spans 2 days
United
United
SEA
9:00a
ONT
2:47p
5h 47m
1 stop
ONT
4:39p
SEA
8:46p
4h 07m
1 stop
Depart: Wed Apr 22 2015 Return: Fri Apr 24 2015 Trip spans 3 days
United
United
SEA
1:52p
ONT
8:09p
6h 17m
1 stop
ONT
6:45a
SEA
1:04p
6h 19m
1 stop
Depart: Sat Apr 25 2015 Return: Sun Apr 26 2015 Trip spans 2 days
United
United
SEA
4:10a
ONT
9:34a
5h 24m
1 stop
ONT
1:30a
SEA
6:13a
4h 43m
1 stop
Depart: Mon Apr 27 2015 Return: Tue Apr 28 2015 Trip spans 2 days
United
United
SEA
11:27a
ONT
4:09p
4h 42m
1 stop
ONT
1:53p
SEA
5:57p
4h 04m
1 stop
Depart: Wed Apr 29 2015 Return: Fri May 1 2015 Trip spans 3 days
United
United
SEA
1:28a
ONT
6:00a
4h 32m
1 stop
ONT
3:18p
SEA
7:39p
4h 21m
1 stop
Depart: Sat May 2 2015 Return: Mon May 4 2015 Trip spans 3 days
United
United
SEA
9:05a
ONT
1:23p
4h 18m
1 stop
ONT
4:39p
SEA
8:45p
4h 06m
1 stop
Depart: Sun May 3 2015 Return: Tue May 5 2015 Trip spans 3 days
United
United
SEA
1:28a
ONT
6:15a
4h 47m
1 stop
ONT
4:39p
SEA
8:45p
4h 06m
1 stop
Depart: Mon May 4 2015 Return: Wed May 6 2015 Trip spans 3 days
United
United
SEA
1:28a
ONT
6:15a
4h 47m
1 stop
ONT
8:57a
SEA
2:00p
5h 03m
1 stop
Depart: Tue May 5 2015 Return: Thu May 7 2015 Trip spans 3 days
United
United
SEA
2:40p
ONT
8:09p
5h 29m
1 stop
ONT
8:47a
SEA
2:00p
5h 13m
1 stop
Depart: Sat May 16 2015 Return: Tue May 19 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
1:55p
ONT
4:18p
2h 23m
nonstop
ONT
2:00a
SEA
4:37a
2h 37m
nonstop
Depart: Sat May 30 2015 Return: Tue Jun 9 2015 Trip spans 11 days
American Airlines
American Airlines
SEA
3:25a
ONT
5:47a
2h 22m
nonstop
ONT
2:05a
SEA
4:35a
2h 30m
nonstop
Direct flights SEA to ONT on Delta
Flight # Depart SEA Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
7535 2:20 pm 4:55 pm Apr 6 - Apr 13
7535 2:20 pm 4:55 pm Apr 14 - May 2
7535 2:20 pm 4:58 pm May 4 - Jun 6
Airports
Origin

Seattle
$184
Destination

Ontario
$184