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 Oct 7 2017 Return: Wed Oct 11 2017 Trip spans 5 days
United
United
ONT
12:00a
SEA
6:28a
6h 28m
1 stop
SEA
12:00a
ONT
4:24a
4h 24m
1 stop
Depart: Wed Nov 8 2017 Return: Sat Nov 11 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
7:46a
7h 46m
1 stop
SEA
12:00a
ONT
4:42a
4h 42m
1 stop
Depart: Fri Oct 20 2017 Return: Mon Oct 23 2017 Trip spans 4 days
Delta
Delta
ONT
12:00a
SEA
5:08a
5h 08m
1 stop
SEA
12:00a
ONT
6:00a
6h 00m
1 stop
Depart: Thu Oct 19 2017 Return: Sun Oct 22 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
2:38a
2h 38m
nonstop
SEA
12:00a
ONT
2:30a
2h 30m
nonstop
Depart: Wed Nov 8 2017 Return: Sat Nov 11 2017 Trip spans 4 days
United
United
ONT
12:00a
SEA
4:38a
4h 38m
1 stop
SEA
12:00a
ONT
6:50a
6h 50m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
12:00a
SEA
7:24a
7h 24m
1 stop
SEA
12:00a
ONT
6:43a
6h 43m
1 stop
Depart: Thu Jan 11 2018 Return: Sat Jan 13 2018 Trip spans 3 days
United
United
ONT
12:00a
SEA
4:41a
4h 41m
1 stop
SEA
12:00a
ONT
4:57a
4h 57m
1 stop
Depart: Fri Feb 2 2018 Return: Tue Feb 6 2018 Trip spans 5 days
United
United
ONT
12:00a
SEA
4:41a
4h 41m
1 stop
SEA
12:00a
ONT
4:58a
4h 58m
1 stop
Depart: Wed Oct 11 2017 Return: Sun Oct 15 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
2:38a
2h 38m
nonstop
SEA
12:00a
ONT
2:30a
2h 30m
nonstop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
United
United
ONT
12:00a
SEA
4:33a
4h 33m
1 stop
SEA
12:00a
ONT
6:06a
6h 06m
1 stop
Depart: Mon Dec 25 2017 Return: Tue Jan 2 2018 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
2:49a
2h 49m
nonstop
SEA
12:00a
ONT
2:33a
2h 33m
nonstop
Depart: Thu Mar 15 2018 Return: Sun Mar 18 2018 Trip spans 4 days
United
United
ONT
12:00a
SEA
6:56a
6h 56m
1 stop
SEA
12:00a
ONT
7:38p
19h 38m
1 stop
Depart: Thu Sep 28 2017 Return: Fri Oct 6 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
2:33a
2h 33m
nonstop
SEA
12:00a
ONT
2:27a
2h 27m
nonstop
Depart: Sat Nov 18 2017 Return: Sun Nov 26 2017 Trip spans 9 days
United
United
ONT
12:00a
SEA
4:27a
4h 27m
1 stop
SEA
12:00a
ONT
12:17p
12h 17m
1 stop
Direct flights ONT to SEA on American Airlines
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
7050 6:05 am 8:43 am Oct 2 - Oct 13
7050 6:05 am 8:38 am Sep 25 - Sep 28
7050 6:05 am 8:38 am Sep 26 - Oct 1
7050 6:05 am 8:43 am Oct 15 - Oct 15
7050 6:05 am 8:43 am Oct 7 - Oct 8
7050 6:05 am 8:43 am Oct 14 - Oct 21
7050 6:05 am 8:43 am Oct 22 - Oct 31
7050 6:05 am 8:45 am Oct 25 - Oct 25
7036 11:40 am 2:13 pm Oct 28 - Nov 3
7036 11:40 am 2:13 pm Oct 21 - Oct 25
7036 11:40 am 2:13 pm Oct 20 - Oct 27
7036 11:40 am 2:13 pm Oct 13 - Oct 17
7036 11:40 am 2:13 pm Oct 11 - Oct 19
7036 11:40 am 2:13 pm Oct 4 - Oct 8
7036 11:40 am 2:13 pm Oct 2 - Oct 10
7036 11:50 am 2:23 pm Sep 22 - Sep 28
7036 11:50 am 2:23 pm Sep 29 - Oct 1
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$144
Destination

Seattle
$144
Airlines Airline reviews

73 travelers who booked a flight from Ontario to Seattle rated their chosen airlines with an average of 8.4.

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