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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
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: Sat Nov 4 2017 Return: Tue Nov 7 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:38a
2h 38m
nonstop
SEA
12:00a
ONT
2:35a
2h 35m
nonstop
Depart: Wed Nov 29 2017 Return: Sat Dec 2 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
5:16a
5h 16m
1 stop
SEA
12:00a
ONT
2:23a
2h 23m
nonstop
Depart: Sat Mar 3 2018 Return: Wed Mar 7 2018 Trip spans 5 days
Delta
Delta
ONT
12:00a
SEA
6:23a
6h 23m
1 stop
SEA
12:00a
ONT
5:31a
5h 31m
1 stop
Depart: Tue Oct 24 2017 Return: Sat Nov 4 2017 Trip spans 12 days
United
United
ONT
12:00a
SEA
7:24a
7h 24m
1 stop
SEA
12:00a
ONT
5:02a
5h 02m
1 stop
Depart: Sat Nov 4 2017 Return: Tue Nov 7 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:38a
2h 38m
nonstop
SEA
12:00a
ONT
2:35a
2h 35m
nonstop
Depart: Wed Dec 6 2017 Return: Sat Dec 9 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:49a
2h 49m
nonstop
SEA
12:00a
ONT
2:33a
2h 33m
nonstop
Depart: Tue Jan 16 2018 Return: Wed Feb 7 2018 Trip spans 23 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:44a
2h 44m
nonstop
SEA
12:00a
ONT
2:34a
2h 34m
nonstop
Depart: Sat Jan 20 2018 Return: Tue Jan 23 2018 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:44a
2h 44m
nonstop
SEA
12:00a
ONT
2:36a
2h 36m
nonstop
Depart: Sat Oct 28 2017 Return: Sat Nov 4 2017 Trip spans 8 days
Delta
Delta
ONT
12:00a
SEA
5:17a
5h 17m
1 stop
SEA
12:00a
ONT
4:16a
4h 16m
1 stop
Depart: Sat Feb 3 2018 Return: Wed Feb 7 2018 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:44a
2h 44m
nonstop
SEA
12:00a
ONT
2:34a
2h 34m
nonstop
Depart: Tue Feb 13 2018 Return: Wed Feb 21 2018 Trip spans 9 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:40a
2h 40m
nonstop
SEA
12:00a
ONT
2:34a
2h 34m
nonstop
Depart: Thu Mar 22 2018 Return: Mon Mar 26 2018 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
2:40a
2h 40m
nonstop
SEA
12:00a
ONT
7:13a
7h 13m
1 stop
Depart: Thu Apr 26 2018 Return: Mon Apr 30 2018 Trip spans 5 days
Delta
Delta
ONT
12:00a
SEA
6:23a
6h 23m
1 stop
SEA
12:00a
ONT
4:11a
4h 11m
1 stop
Depart: Sat Mar 3 2018 Return: Wed Mar 7 2018 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:40a
2h 40m
nonstop
SEA
12:00a
ONT
2:34a
2h 34m
nonstop
Depart: Fri Nov 3 2017 Return: Sun Nov 5 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:38a
2h 38m
nonstop
SEA
12:00a
ONT
1:35a
2h 35m
nonstop
Depart: Fri Nov 10 2017 Return: Sun Nov 12 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:46a
2h 46m
nonstop
SEA
12:00a
ONT
2:35a
2h 35m
nonstop
Depart: Sat Mar 24 2018 Return: Sat Mar 31 2018 Trip spans 8 days
United
United
ONT
12:00a
SEA
4:36a
4h 36m
1 stop
SEA
12:00a
ONT
4:17a
4h 17m
1 stop
Depart: Fri Nov 17 2017 Return: Sun Dec 3 2017 Trip spans 17 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:46a
2h 46m
nonstop
SEA
12:00a
ONT
2:33a
2h 33m
nonstop
Depart: Fri Dec 1 2017 Return: Sun Dec 3 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:46a
2h 46m
nonstop
SEA
12:00a
ONT
2:33a
2h 33m
nonstop
Depart: Fri Dec 8 2017 Return: Sun Dec 10 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:49a
2h 49m
nonstop
SEA
12:00a
ONT
2:33a
2h 33m
nonstop
Direct flights ONT to SEA on American Airlines
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
7050 6:00 am 8:46 am Nov 17 - Nov 27
7050 6:05 am 8:43 am Oct 22 - Oct 31
7050 6:05 am 8:45 am Oct 25 - Oct 25
7050 6:05 am 8:43 am Nov 1 - Nov 3
7050 6:05 am 8:43 am Nov 4 - Nov 4
7036 10:20 am 1:06 pm Nov 14 - Nov 25
7036 10:20 am 1:06 pm Nov 5 - Nov 13
7036 10:20 am 1:06 pm Nov 7 - Nov 8
7036 11:40 am 2:13 pm Oct 25 - Oct 31
7036 11:40 am 2:13 pm Nov 4 - Nov 4
7036 11:40 am 2:13 pm Oct 26 - Nov 3
7036 11:40 am 2:13 pm Oct 17 - Oct 24
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$147
Destination

Seattle
$147
Airlines Airline reviews

75 travelers who booked a flight from Ontario to Seattle rated their chosen airlines with an average of 8.5.

Overall
8.7
Boarding
9.0
Crew
9.0
Comfort
8.4
Food
7.7
Entertainment
7.2