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

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 Seattle/Tacoma Intl to Ontario

(Round-trip)
Depart: Tue Oct 11 2016 Return: Tue Oct 18 2016 Trip spans 8 days
Alaska Airlines
Alaska Airlines
SEA
4:40p
ONT
7:06p
2h 26m
nonstop
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
Depart: Wed Oct 12 2016 Return: Wed Oct 19 2016 Trip spans 8 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
nonstop
ONT
2:40a
SEA
7:10a
4h 30m
1 stop
Depart: Mon Oct 31 2016 Return: Sun Nov 6 2016 Trip spans 7 days
Major Airline
Major Airline
SEA
11:40p
ONT
2:12a
2h 32m
nonstop
ONT
1:00a
SEA
3:36a
2h 36m
nonstop
Depart: Mon Nov 14 2016 Return: Wed Nov 16 2016 Trip spans 3 days
United
United
SEA
10:20a
ONT
3:52p
5h 32m
1 stop
ONT
5:25a
SEA
11:57a
6h 32m
1 stop
Depart: Thu Jan 26 2017 Return: Thu Feb 2 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
6:21a
ONT
11:01a
4h 40m
1 stop
ONT
11:41a
SEA
6:13p
6h 32m
1 stop
Depart: Tue Oct 18 2016 Return: Thu Oct 20 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:12a
2h 32m
nonstop
ONT
7:05a
SEA
9:40a
2h 35m
nonstop
Depart: Tue Nov 29 2016 Return: Sun Dec 4 2016 Trip spans 6 days
Major Airline
Major Airline
SEA
9:25p
ONT
11:55p
2h 30m
nonstop
ONT
1:00a
SEA
3:36a
2h 36m
nonstop
Depart: Sat Jan 28 2017 Return: Wed Feb 1 2017 Trip spans 5 days
Southwest
Southwest
SEA
10:05a
ONT
2:00p
3h 55m
1 stop
ONT
5:30a
SEA
9:45a
4h 15m
1 stop
Depart: Sat Oct 22 2016 Return: Sun Oct 23 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
SEA
4:40p
ONT
7:06p
2h 26m
nonstop
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
Depart: Tue Jan 10 2017 Return: Wed Jan 18 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
9:25p
ONT
11:54p
2h 29m
nonstop
ONT
1:00a
SEA
3:36a
2h 36m
nonstop
Depart: Tue Dec 20 2016 Return: Wed Dec 21 2016 Trip spans 2 days
United
United
SEA
8:45a
ONT
2:48p
6h 03m
1 stop
ONT
2:32p
SEA
8:03p
5h 31m
1 stop
Depart: Mon Oct 24 2016 Return: Wed Oct 26 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
4:40p
ONT
7:06p
2h 26m
nonstop
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
Depart: Sat Jan 14 2017 Return: Tue Jan 17 2017 Trip spans 4 days
Major Airline
Major Airline
SEA
4:55a
ONT
7:24a
2h 29m
nonstop
ONT
8:15a
SEA
10:52a
2h 37m
nonstop
Depart: Tue Oct 25 2016 Return: Fri Oct 28 2016 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:12a
2h 32m
nonstop
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
Depart: Sat Feb 11 2017 Return: Sat Feb 18 2017 Trip spans 8 days
Southwest
Southwest
SEA
10:05a
ONT
2:00p
3h 55m
1 stop
ONT
9:05a
SEA
1:10p
4h 05m
1 stop
Depart: Wed Oct 19 2016 Return: Tue Oct 25 2016 Trip spans 7 days
Major Airline
Major Airline
SEA
1:15p
ONT
5:15p
4h 00m
nonstop
ONT
2:40a
SEA
7:10a
4h 30m
nonstop
Depart: Sat Oct 29 2016 Return: Mon Oct 31 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
4:40p
ONT
7:06p
2h 26m
nonstop
ONT
2:00a
SEA
4:40a
2h 40m
nonstop
Depart: Wed Oct 26 2016 Return: Wed Nov 2 2016 Trip spans 8 days
Major Airline
Major Airline
SEA
1:15p
ONT
5:15p
4h 00m
nonstop
ONT
2:40a
SEA
7:10a
4h 30m
nonstop
Depart: Sat Oct 1 2016 Return: Thu Oct 6 2016 Trip spans 6 days
American Airlines
American Airlines
SEA
1:00a
ONT
7:30a
6h 30m
1 stop
ONT
3:20p
SEA
9:37p
6h 17m
1 stop
Depart: Wed Oct 5 2016 Return: Wed Oct 12 2016 Trip spans 8 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
nonstop
ONT
2:40a
SEA
7:10a
4h 30m
1 stop
Direct flights SEA to ONT on Delta
Flight # Depart SEA Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
9129 2:35 pm 5:05 pm Oct 6 - Oct 16
9129 2:35 pm 5:05 pm Oct 3 - Oct 8
9129 2:35 pm 5:05 pm Oct 11 - Oct 18
9129 2:35 pm 5:05 pm Oct 12 - Oct 12
9129 2:35 pm 5:05 pm Nov 5 - Nov 5
9129 2:35 pm 5:05 pm Nov 4 - Nov 4
9129 2:35 pm 5:05 pm Oct 27 - Nov 3
9129 2:35 pm 5:05 pm Oct 26 - Oct 31
9129 2:35 pm 5:05 pm Oct 19 - Oct 25
9129 2:35 pm 5:05 pm Oct 15 - Oct 29
9129 2:55 pm 5:27 pm Nov 6 - Nov 17
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
Airports
Origin

Seattle
$137
Destination

Ontario
$137
Airlines Airline reviews

36 travelers who booked a flight from Seattle to Ontario rated their chosen airlines with an average of 8.2.

Overall
8.6
Boarding
8.6
Crew
8.5
Comfort
8.3
Food
7.6
Entertainment
6.8