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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youth
12-17
Child
2-11
Seat Infant
under 2
Lap Infant
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to Seattle/Tacoma Intl

(Round-trip)
Depart: Mon Sep 21 2015 Return: Sat Sep 26 2015 Trip spans 6 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:45p
2h 25m
nonstop
SEA
4:30p
ONT
7:14p
2h 44m
nonstop
Depart: Tue Sep 22 2015 Return: Sat Sep 26 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:45p
2h 25m
nonstop
SEA
4:30p
ONT
7:14p
2h 44m
nonstop
Depart: Wed Sep 23 2015 Return: Sat Sep 26 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:45p
2h 25m
nonstop
SEA
3:05a
ONT
5:35a
2h 30m
nonstop
Depart: Sat Sep 26 2015 Return: Mon Sep 28 2015 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:45p
2h 25m
nonstop
SEA
3:05a
ONT
5:34a
2h 29m
nonstop
Depart: Tue Sep 29 2015 Return: Wed Sep 30 2015 Trip spans 2 days
Alaska Airlines
Alaska Airlines
ONT
6:25a
SEA
9:04a
2h 39m
nonstop
SEA
3:05a
ONT
5:34a
2h 29m
nonstop
Depart: Wed Sep 30 2015 Return: Sat Oct 3 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:54p
2h 34m
nonstop
SEA
4:25p
ONT
6:50p
2h 25m
nonstop
Depart: Tue Oct 6 2015 Return: Sat Oct 10 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:54p
2h 34m
nonstop
SEA
4:25p
ONT
6:50p
2h 25m
nonstop
Depart: Wed Oct 7 2015 Return: Sat Oct 10 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:54p
2h 34m
nonstop
SEA
4:25p
ONT
6:50p
2h 25m
nonstop
Depart: Sat Oct 10 2015 Return: Tue Oct 13 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
6:25a
SEA
9:04a
2h 39m
nonstop
SEA
3:05a
ONT
5:34a
2h 29m
nonstop
Depart: Sat Sep 19 2015 Return: Tue Sep 22 2015 Trip spans 4 days
United
United
ONT
8:44a
SEA
1:59p
5h 15m
1 stop
SEA
1:43p
ONT
8:29p
6h 46m
1 stop
Depart: Sat Oct 3 2015 Return: Wed Oct 7 2015 Trip spans 5 days
United
United
ONT
8:39a
SEA
12:46p
4h 07m
1 stop
SEA
9:07a
ONT
1:31p
4h 24m
1 stop
Depart: Tue Oct 13 2015 Return: Wed Oct 14 2015 Trip spans 2 days
Alaska Airlines
Alaska Airlines
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
SEA
4:25p
ONT
6:50p
2h 25m
nonstop
Depart: Wed Oct 14 2015 Return: Wed Oct 28 2015 Trip spans 15 days
United
United
ONT
1:05a
SEA
6:46a
5h 41m
1 stop
SEA
3:30p
ONT
8:35p
5h 05m
1 stop
Depart: Sat Oct 17 2015 Return: Wed Oct 21 2015 Trip spans 5 days
United
United
ONT
9:30a
SEA
4:47p
7h 17m
1 stop
SEA
1:15a
ONT
5:57a
4h 42m
1 stop
Depart: Tue Oct 27 2015 Return: Sat Oct 31 2015 Trip spans 5 days
United
United
ONT
5:07p
SEA
9:28p
4h 21m
1 stop
SEA
3:17a
ONT
8:07a
4h 50m
1 stop
Depart: Wed Oct 28 2015 Return: Sat Oct 31 2015 Trip spans 4 days
United
United
ONT
11:33a
SEA
3:49p
4h 16m
1 stop
SEA
3:17a
ONT
8:07a
4h 50m
1 stop
Depart: Sat Oct 24 2015 Return: Wed Oct 28 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:54p
2h 34m
nonstop
SEA
3:05a
ONT
5:34a
2h 29m
nonstop
Depart: Sat Oct 31 2015 Return: Tue Nov 3 2015 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:20p
SEA
4:54p
2h 34m
nonstop
SEA
9:40a
ONT
12:09p
2h 29m
nonstop
Depart: Fri Sep 11 2015 Return: Sat Sep 26 2015 Trip spans 16 days
American Airlines
American Airlines
ONT
8:35a
SEA
3:30p
6h 55m
1 stop
SEA
4:25a
ONT
11:09a
6h 44m
1 stop
Depart: Tue Nov 17 2015 Return: Wed Nov 18 2015 Trip spans 2 days
Delta
Delta
ONT
1:15a
SEA
5:53a
4h 38m
1 stop
SEA
1:15p
ONT
6:09p
4h 54m
1 stop
Direct flights ONT to SEA on Delta
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
7503 6:00 am 8:49 am Sep 27 - Oct 1
7554 6:00 am 8:40 am Oct 13 - Oct 13
7554 6:00 am 8:40 am Oct 12 - Oct 19
7554 6:00 am 8:40 am Oct 8 - Oct 11
7554 6:00 am 8:40 am Oct 4 - Oct 9
7554 6:00 am 8:40 am Oct 2 - Oct 7
7558 6:00 am 8:40 am Oct 3 - Oct 3
7558 6:00 am 8:40 am Oct 10 - Oct 10
7611 6:00 am 8:44 am Sep 3 - Sep 26
7628 10:25 am 12:55 pm Sep 12 - Sep 22
7628 10:25 am 12:55 pm Sep 3 - Sep 14
7628 10:25 am 1:04 pm Oct 9 - Oct 9
7628 10:25 am 1:04 pm Oct 6 - Oct 13
7628 10:25 am 1:04 pm Oct 5 - Oct 14
7628 10:25 am 1:04 pm Sep 28 - Sep 28
7628 10:25 am 1:04 pm Sep 27 - Oct 4
7628 10:25 am 12:55 pm Sep 25 - Sep 26
7628 10:25 am 12:55 pm Sep 18 - Sep 24
Airports
Origin

Ontario
$154
Destination

Seattle
$154