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

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

Book cheap flights from Ontario to Seattle/Tacoma Intl

(Round-trip)
Depart: Tue Mar 24 2015 Return: Wed Mar 25 2015 Trip spans 2 days
$181
Select
Delta
Delta
ONT
2:15a
→
SEA
8:02a
5h 47m
1 stop
SEA
2:10p
→
ONT
6:34p
4h 24m
1 stop
Depart: Fri Apr 3 2015 Return: Tue Apr 7 2015 Trip spans 5 days
$183
Select
US Airways
US Airways
ONT
8:35a
→
SEA
3:38p
7h 03m
1 stop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Wed Apr 22 2015 Return: Tue Apr 28 2015 Trip spans 7 days
$183
Select
American Airlines
American Airlines
ONT
8:35a
→
SEA
3:38p
7h 03m
1 stop
SEA
4:25a
→
ONT
11:38a
7h 13m
1 stop
Depart: Wed Mar 11 2015 Return: Wed Mar 25 2015 Trip spans 15 days
$183
Select
Delta
Delta
ONT
2:15a
→
SEA
8:02a
5h 47m
1 stop
SEA
2:10p
→
ONT
6:34p
4h 24m
1 stop
Depart: Thu Apr 23 2015 Return: Wed Apr 29 2015 Trip spans 7 days
$184
Select
US Airways
US Airways
ONT
8:35a
→
SEA
3:38p
7h 03m
1 stop
SEA
11:00a
→
ONT
5:06p
6h 06m
1 stop
Depart: Fri Mar 20 2015 Return: Mon Mar 23 2015 Trip spans 4 days
$185
Select
Delta
Delta
ONT
12:35p
→
SEA
7:00p
6h 25m
1 stop
SEA
2:10p
→
ONT
6:34p
4h 24m
1 stop
Depart: Wed Apr 29 2015 Return: Sun May 3 2015 Trip spans 5 days
$185
Select
US Airways
US Airways
ONT
2:30a
→
SEA
9:32a
7h 02m
1 stop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Tue May 5 2015 Return: Sat May 9 2015 Trip spans 5 days
$185
Select
US Airways
US Airways
ONT
2:30a
→
SEA
9:32a
7h 02m
1 stop
SEA
11:00a
→
ONT
5:06p
6h 06m
1 stop
Depart: Wed May 6 2015 Return: Sun May 10 2015 Trip spans 5 days
$185
Select
US Airways
US Airways
ONT
12:40p
→
SEA
7:07p
6h 27m
1 stop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Sat May 9 2015 Return: Tue May 12 2015 Trip spans 4 days
$185
Select
US Airways
US Airways
ONT
6:00a
→
SEA
12:52p
6h 52m
1 stop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Sat Sep 12 2015 Return: Sat Sep 19 2015 Trip spans 8 days
$185
Select
Delta
Delta
ONT
6:20a
→
SEA
10:48a
4h 28m
1 stop
SEA
9:00a
→
ONT
4:41p
7h 41m
1 stop
Depart: Wed Apr 8 2015 Return: Tue Apr 21 2015 Trip spans 14 days
$189
Select
Multiple Airlines
Multiple Airlines
ONT
12:35p
→
SEA
7:17p
6h 42m
1 stop
SEA
11:00a
→
ONT
5:06p
6h 06m
1 stop
Depart: Tue Apr 7 2015 Return: Sat Apr 18 2015 Trip spans 12 days
$189
Select
American Airlines
American Airlines
ONT
2:00a
→
SEA
4:39a
2h 39m
nonstop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Tue Apr 14 2015 Return: Sun Apr 19 2015 Trip spans 6 days
$189
Select
American Airlines
American Airlines
ONT
2:00a
→
SEA
4:39a
2h 39m
nonstop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Sat Apr 18 2015 Return: Mon Apr 20 2015 Trip spans 3 days
$189
Select
American Airlines
American Airlines
ONT
2:00a
→
SEA
4:39a
2h 39m
nonstop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Tue Apr 21 2015 Return: Sun Apr 26 2015 Trip spans 6 days
$189
Select
American Airlines
American Airlines
ONT
6:30a
→
SEA
9:05a
2h 35m
nonstop
SEA
1:15a
→
ONT
7:33a
6h 18m
1 stop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
$189
Select
American Airlines
American Airlines
ONT
2:00a
→
SEA
4:39a
2h 39m
nonstop
SEA
11:00a
→
ONT
5:06p
6h 06m
1 stop
Depart: Tue Apr 28 2015 Return: Sat May 2 2015 Trip spans 5 days
$193
Select
American Airlines
American Airlines
ONT
12:40p
→
SEA
7:07p
6h 27m
1 stop
SEA
3:20a
→
ONT
5:46a
2h 26m
nonstop
Depart: Tue May 12 2015 Return: Sat May 16 2015 Trip spans 5 days
$194
Select
Alaska Airlines
Alaska Airlines
ONT
6:30a
→
SEA
9:02a
2h 32m
nonstop
SEA
1:55p
→
ONT
4:18p
2h 23m
nonstop
Depart: Sat Mar 21 2015 Return: Tue Mar 24 2015 Trip spans 4 days
$211
Select
United
United
ONT
1:35a
→
SEA
6:22a
4h 47m
1 stop
SEA
1:25a
→
ONT
5:50a
4h 25m
1 stop
Select an airline:  Delta
Direct flights ONT to SEA on Delta
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
9044 6:00 am 8:38 am ✈ ✈ ✈ ✈ Mar 20 - Mar 27
9044 6:00 am 8:38 am ✈ ✈ ✈ ✈ ✈ ✈ Mar 9 - Mar 17
9044 6:00 am 8:39 am ✈ ✈ Apr 12 - Apr 19
9044 6:00 am 8:38 am ✈ ✈ Mar 19 - Mar 23
9044 6:00 am 8:39 am ✈ ✈ ✈ Apr 6 - Apr 11
9044 6:00 am 8:39 am ✈ ✈ Apr 5 - Apr 10
9044 6:00 am 8:38 am ✈ Apr 4 - Apr 4
9044 6:00 am 8:38 am ✈ Mar 24 - Mar 24
9044 6:00 am 8:38 am ✈ ✈ Mar 28 - Apr 2
9044 6:00 am 8:38 am ✈ Mar 29 - Mar 29
9044 6:00 am 8:39 am ✈ Apr 7 - Apr 7
9044 6:00 am 8:38 am ✈ ✈ ✈ Mar 30 - Apr 3
9099 10:30 am 1:05 pm ✈ Apr 6 - Apr 6
9099 10:30 am 1:05 pm ✈ ✈ ✈ ✈ ✈ Mar 18 - Mar 24
9099 10:30 am 1:05 pm ✈ ✈ Apr 9 - Apr 13
9099 10:30 am 1:05 pm ✈ ✈ ✈ ✈ Mar 9 - Mar 16
9099 10:30 am 1:05 pm ✈ Mar 15 - Mar 22
9099 10:30 am 1:05 pm ✈ Mar 17 - Mar 17
9099 10:30 am 1:05 pm ✈ Mar 19 - Mar 19
9099 10:30 am 1:05 pm ✈ ✈ ✈ ✈ ✈ Apr 8 - Apr 15
9099 10:30 am 1:05 pm ✈ ✈ ✈ ✈ ✈ Mar 26 - Apr 4
9099 10:30 am 1:05 pm ✈ ✈ Mar 31 - Apr 7
9099 10:30 am 1:05 pm ✈ Mar 25 - Apr 1
Airports
Origin
Ontario
$181
Destination
Seattle
$181