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: Fri Jun 23 2017 Return: Mon Jun 26 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
4:52a
4h 52m
1 stop
SEA
12:00a
ONT
4:30a
4h 30m
1 stop
Depart: Tue Jun 27 2017 Return: Wed Jun 28 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
12:00a
SEA
4:31a
4h 31m
1 stop
SEA
12:00a
ONT
3:58a
3h 58m
1 stop
Depart: Fri Jun 23 2017 Return: Sat Jul 1 2017 Trip spans 9 days
United
United
ONT
12:00a
SEA
4:52a
4h 52m
1 stop
SEA
12:00a
ONT
4:47a
4h 47m
1 stop
Depart: Sat Jun 24 2017 Return: Mon Jul 3 2017 Trip spans 10 days
American Airlines
American Airlines
ONT
12:00a
SEA
7:03a
7h 03m
1 stop
SEA
12:00a
ONT
2:37a
2h 37m
nonstop
Depart: Sun Jun 25 2017 Return: Sat Jul 8 2017 Trip spans 14 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
4:31a
4h 31m
1 stop
SEA
12:00a
ONT
2:37a
2h 37m
nonstop
Depart: Fri Jun 23 2017 Return: Wed Jun 28 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
5:37a
5h 37m
1 stop
SEA
12:00a
ONT
6:52a
6h 52m
1 stop
Depart: Sat Jun 24 2017 Return: Wed Jul 5 2017 Trip spans 12 days
Delta
Delta
ONT
12:00a
SEA
5:09a
5h 09m
1 stop
SEA
12:00a
ONT
4:39a
4h 39m
1 stop
Depart: Fri Jun 23 2017 Return: Sun Jul 2 2017 Trip spans 10 days
United
United
ONT
12:00a
SEA
4:52a
4h 52m
1 stop
SEA
12:00a
ONT
5:31a
5h 31m
1 stop
Depart: Fri Jun 23 2017 Return: Tue Jun 27 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
SEA
4:44a
4h 44m
1 stop
SEA
12:00a
ONT
4:34a
4h 34m
1 stop
Depart: Sat Jun 24 2017 Return: Tue Jul 4 2017 Trip spans 11 days
United
United
ONT
12:00a
SEA
5:35a
5h 35m
1 stop
SEA
12:00a
ONT
4:42a
4h 42m
1 stop
Depart: Sat Jun 24 2017 Return: Wed Jun 28 2017 Trip spans 5 days
United
United
ONT
12:00a
SEA
5:36a
5h 36m
1 stop
SEA
12:00a
ONT
4:34a
4h 34m
1 stop
Depart: Sat Jun 24 2017 Return: Fri Jun 30 2017 Trip spans 7 days
American Airlines
American Airlines
ONT
12:00a
SEA
7:03a
7h 03m
1 stop
SEA
12:00a
ONT
6:55p
18h 55m
1 stop
Depart: Mon Jun 26 2017 Return: Wed Jun 28 2017 Trip spans 3 days
United
United
ONT
12:00a
SEA
4:51a
4h 51m
1 stop
SEA
12:00a
ONT
4:34a
4h 34m
1 stop
Depart: Sat Jun 24 2017 Return: Sat Jul 1 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
12:00a
SEA
7:03a
7h 03m
1 stop
SEA
12:00a
ONT
3:03p
15h 03m
1 stop
Depart: Fri Jun 23 2017 Return: Fri Jun 30 2017 Trip spans 8 days
United
United
ONT
12:00a
SEA
4:52a
4h 52m
1 stop
SEA
12:00a
ONT
4:34a
4h 34m
1 stop
Depart: Sun Jun 25 2017 Return: Mon Jul 3 2017 Trip spans 9 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
4:31a
4h 31m
1 stop
SEA
12:00a
ONT
3:58a
3h 58m
1 stop
Depart: Sat Jun 24 2017 Return: Sat Jul 1 2017 Trip spans 8 days
United
United
ONT
12:00a
SEA
5:36a
5h 36m
1 stop
SEA
12:00a
ONT
4:47a
4h 47m
1 stop
Depart: Mon Jun 26 2017 Return: Tue Jun 27 2017 Trip spans 2 days
Delta
Delta
ONT
12:00a
SEA
6:29a
6h 29m
1 stop
SEA
12:00a
ONT
6:05a
6h 05m
1 stop
Depart: Sat Jun 24 2017 Return: Wed Jul 5 2017 Trip spans 12 days
American Airlines
American Airlines
ONT
12:00a
SEA
7:03a
7h 03m
1 stop
SEA
12:00a
ONT
2:26a
2h 26m
nonstop
Depart: Sun Jun 25 2017 Return: Sun Jul 2 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
ONT
12:00a
SEA
4:31a
4h 31m
1 stop
SEA
12:00a
ONT
2:26a
2h 26m
nonstop
Direct flights ONT to SEA on American Airlines
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
7050 6:20 am 9:03 am Jul 26 - Aug 1
7050 6:20 am 8:58 am Jul 1 - Jul 14
7050 6:20 am 8:58 am Jun 21 - Jun 30
7050 6:20 am 8:58 am Jul 15 - Jul 16
7050 6:20 am 9:03 am Jul 17 - Jul 19
7050 6:20 am 9:03 am Jul 18 - Jul 27
7050 6:20 am 9:03 am Jul 30 - Aug 5
7613 12:00 pm 2:38 pm Jun 21 - Aug 26
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$257
Destination

Seattle
$257
Airlines Airline reviews

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

Overall
8.7
Boarding
9.1
Crew
8.9
Comfort
8.3
Food
7.6
Entertainment
6.9