Find Deals on 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: Wed Mar 15 2017 Return: Wed Mar 22 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
ONT
11:25a
SEA
2:03p
2h 38m
nonstop
SEA
3:25a
ONT
5:52a
2h 27m
nonstop
Depart: Thu Mar 16 2017 Return: Wed Mar 22 2017 Trip spans 7 days
Major Airline
Major Airline
ONT
9:30a
SEA
12:12p
2h 42m
1 stop
SEA
6:00a
ONT
8:31a
2h 31m
1 stop
Depart: Wed Mar 8 2017 Return: Tue Mar 14 2017 Trip spans 6 days
American Airlines
American Airlines
ONT
7:45a
SEA
3:24p
7h 39m
1 stop
SEA
1:00a
ONT
7:48a
6h 48m
1 stop
Depart: Sun Jul 9 2017 Return: Thu Jul 27 2017 Trip spans 19 days
Southwest
Southwest
ONT
3:05a
SEA
6:50a
3h 45m
1 stop
SEA
1:35a
ONT
5:50a
4h 15m
1 stop
Depart: Sat Mar 18 2017 Return: Tue Mar 21 2017 Trip spans 4 days
United
United
ONT
12:55p
SEA
6:10p
5h 15m
1 stop
SEA
1:40a
ONT
6:11a
4h 31m
1 stop
Depart: Sat Mar 4 2017 Return: Fri Mar 10 2017 Trip spans 7 days
Delta
Delta
ONT
5:18a
SEA
1:11p
7h 53m
1 stop
SEA
11:57a
ONT
5:51p
5h 54m
1 stop
Depart: Tue Apr 4 2017 Return: Mon Apr 10 2017 Trip spans 7 days
Alaska Airlines
Alaska Airlines
ONT
1:30p
SEA
4:12p
2h 42m
nonstop
SEA
3:50p
ONT
6:14p
2h 24m
nonstop
Depart: Wed Apr 5 2017 Return: Mon Apr 10 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
ONT
2:20a
SEA
4:55a
2h 35m
nonstop
SEA
3:50p
ONT
6:14p
2h 24m
nonstop
Depart: Wed Apr 12 2017 Return: Sat Apr 15 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
2:20a
SEA
5:03a
2h 43m
nonstop
SEA
3:50p
ONT
6:14p
2h 24m
nonstop
Depart: Fri Mar 17 2017 Return: Wed Mar 22 2017 Trip spans 6 days
Major Airline
Major Airline
ONT
3:45a
SEA
6:20a
2h 35m
nonstop
SEA
6:00a
ONT
8:31a
2h 31m
nonstop
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
ONT
1:30p
SEA
4:12p
2h 42m
nonstop
SEA
10:00a
ONT
12:27p
2h 27m
nonstop
Depart: Thu Mar 9 2017 Return: Tue Mar 14 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
7:45a
SEA
3:24p
7h 39m
1 stop
SEA
1:00a
ONT
7:48a
6h 48m
1 stop
Depart: Wed Apr 19 2017 Return: Sun Apr 23 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
2:20a
SEA
5:03a
2h 43m
nonstop
SEA
3:25a
ONT
5:52a
2h 27m
nonstop
Depart: Thu Jul 27 2017 Return: Tue Aug 8 2017 Trip spans 13 days
Major Airline
Major Airline
ONT
10:20p
SEA
1:03a
2h 43m
nonstop
SEA
5:40a
ONT
8:16a
2h 36m
nonstop
Depart: Thu Apr 20 2017 Return: Sat Apr 22 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
2:20a
SEA
5:03a
2h 43m
nonstop
SEA
3:50p
ONT
6:14p
2h 24m
nonstop
Depart: Mon Mar 20 2017 Return: Tue Mar 21 2017 Trip spans 2 days
United
United
ONT
3:15p
SEA
9:12p
5h 57m
1 stop
SEA
1:40a
ONT
6:11a
4h 31m
1 stop
Depart: Sat Mar 11 2017 Return: Wed Mar 15 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
11:30a
SEA
6:34p
7h 04m
1 stop
SEA
1:00a
ONT
7:48a
6h 48m
1 stop
Depart: Wed Mar 1 2017 Return: Sat Mar 4 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
12:00a
SEA
1:54a
1h 54m
nonstop
SEA
8:00a
ONT
9:54a
1h 54m
nonstop
Depart: Fri Apr 21 2017 Return: Sun Apr 23 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
1:30p
SEA
4:12p
2h 42m
nonstop
SEA
3:25a
ONT
5:52a
2h 27m
nonstop
Depart: Sat Apr 1 2017 Return: Tue Apr 11 2017 Trip spans 11 days
United
United
ONT
12:55p
SEA
6:19p
5h 24m
1 stop
SEA
1:57a
ONT
6:11a
4h 14m
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 6:20 am 8:55 am Apr 5 - Apr 9
7050 6:20 am 8:55 am Apr 4 - Apr 4
7036 11:00 am 1:38 pm Mar 11 - Mar 11
7036 11:00 am 1:38 pm Mar 7 - Mar 10
7036 11:00 am 1:38 pm Mar 3 - Mar 8
7036 11:45 am 2:17 pm Mar 31 - Apr 7
7036 11:45 am 2:20 pm Mar 24 - Mar 28
7036 11:45 am 2:17 pm Apr 1 - Apr 5
7036 11:45 am 2:20 pm Apr 3 - Apr 3
7036 11:45 am 2:17 pm Mar 23 - Mar 30
7036 11:45 am 2:17 pm Mar 18 - Mar 25
7036 11:45 am 2:20 pm Mar 15 - Mar 20
7036 11:45 am 2:17 pm Mar 12 - Mar 19
7036 11:45 am 2:20 pm Mar 17 - Mar 17
7467 3:25 pm 6:03 pm Mar 12 - Mar 15
7467 3:25 pm 6:03 pm Mar 3 - Mar 11
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$137
Destination

Seattle
$137
Airlines Airline reviews

41 travelers who booked a flight from Ontario to Seattle rated their chosen airlines with an average of 8.1.

Overall
8.4
Boarding
8.9
Crew
8.7
Comfort
7.8
Food
7.2
Entertainment
6.3