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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 Mar 17 2015 Return: Wed Mar 18 2015 Trip spans 2 days
Delta
Delta
SEA
2:10p
ONT
6:34p
4h 24m
1 stop
ONT
2:15a
SEA
8:02a
5h 47m
1 stop
Depart: Tue Mar 10 2015 Return: Wed Mar 18 2015 Trip spans 9 days
Delta
Delta
SEA
2:10p
ONT
6:34p
4h 24m
1 stop
ONT
2:15a
SEA
8:02a
5h 47m
1 stop
Depart: Wed Apr 8 2015 Return: Wed Apr 22 2015 Trip spans 15 days
US Airways
US Airways
SEA
1:15a
ONT
7:33a
6h 18m
1 stop
ONT
8:35a
SEA
3:38p
7h 03m
1 stop
Depart: Wed Apr 15 2015 Return: Wed Apr 29 2015 Trip spans 15 days
US Airways
US Airways
SEA
1:15a
ONT
7:33a
6h 18m
1 stop
ONT
6:00a
SEA
12:52p
6h 52m
1 stop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
Delta
Delta
SEA
12:35p
ONT
6:45p
6h 10m
1 stop
ONT
12:35p
SEA
7:17p
6h 42m
1 stop
Depart: Mon Apr 27 2015 Return: Fri May 1 2015 Trip spans 5 days
US Airways
US Airways
SEA
7:25a
ONT
2:05p
6h 40m
1 stop
ONT
8:35a
SEA
3:38p
7h 03m
1 stop
Depart: Sat May 2 2015 Return: Wed May 6 2015 Trip spans 5 days
US Airways
US Airways
SEA
7:25a
ONT
2:05p
6h 40m
1 stop
ONT
6:00a
SEA
12:52p
6h 52m
1 stop
Depart: Sun May 3 2015 Return: Wed May 6 2015 Trip spans 4 days
US Airways
US Airways
SEA
1:15a
ONT
7:33a
6h 18m
1 stop
ONT
12:40p
SEA
7:07p
6h 27m
1 stop
Depart: Wed Sep 2 2015 Return: Sun Sep 6 2015 Trip spans 5 days
Delta
Delta
SEA
2:15p
ONT
6:26p
4h 11m
1 stop
ONT
2:15p
SEA
6:55p
4h 40m
1 stop
Depart: Tue Mar 31 2015 Return: Wed Apr 15 2015 Trip spans 16 days
Multiple Airlines
Multiple Airlines
SEA
3:15a
ONT
5:44a
2h 29m
nonstop
ONT
6:05a
SEA
12:22p
6h 17m
1 stop
Depart: Wed Mar 25 2015 Return: Tue Apr 7 2015 Trip spans 14 days
American Airlines
American Airlines
SEA
1:15a
ONT
7:34a
6h 19m
1 stop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Sat Mar 28 2015 Return: Tue Mar 31 2015 Trip spans 4 days
American Airlines
American Airlines
SEA
1:55p
ONT
7:56p
6h 01m
1 stop
ONT
2:00a
SEA
4:38a
2h 38m
nonstop
Depart: Sat May 16 2015 Return: Tue May 19 2015 Trip spans 4 days
Multiple Airlines
Multiple Airlines
SEA
11:00a
ONT
5:06p
6h 06m
1 stop
ONT
2:00a
SEA
4:37a
2h 37m
nonstop
Depart: Tue Apr 7 2015 Return: Tue Apr 14 2015 Trip spans 8 days
Alaska Airlines
Alaska Airlines
SEA
3:15a
ONT
5:43a
2h 28m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Wed Apr 1 2015 Return: Tue Apr 7 2015 Trip spans 7 days
American Airlines
American Airlines
SEA
4:55p
ONT
7:21p
2h 26m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Tue Apr 14 2015 Return: Sat Apr 18 2015 Trip spans 5 days
American Airlines
American Airlines
SEA
3:15a
ONT
5:43a
2h 28m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Sat Apr 18 2015 Return: Tue Apr 21 2015 Trip spans 4 days
American Airlines
American Airlines
SEA
1:55p
ONT
4:21p
2h 26m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Tue Apr 21 2015 Return: Sat Apr 25 2015 Trip spans 5 days
American Airlines
American Airlines
SEA
3:15a
ONT
5:43a
2h 28m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
American Airlines
American Airlines
SEA
3:15a
ONT
5:43a
2h 28m
nonstop
ONT
2:00a
SEA
4:39a
2h 39m
nonstop
Depart: Wed Mar 18 2015 Return: Tue Mar 24 2015 Trip spans 7 days
United
United
SEA
1:25a
ONT
5:50a
4h 25m
1 stop
ONT
1:35a
SEA
8:46a
7h 11m
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 2:20 pm 4:55 pm Apr 5 - May 2
7535 2:20 pm 5:00 pm Mar 31 - Apr 4
7535 2:20 pm 5:00 pm Mar 18 - Mar 29
7535 2:20 pm 5:00 pm Mar 16 - Mar 30
7535 2:20 pm 5:00 pm Mar 10 - Mar 24
7535 2:20 pm 5:00 pm Mar 8 - Mar 13
7535 2:20 pm 5:00 pm Mar 9 - Mar 15
Airports
Origin

Seattle
$181
Destination

Ontario
$181