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 May 17 2016 Return: Tue May 24 2016 Trip spans 8 days
Major Airline
Major Airline
SEA
11:40p
ONT
2:07a
2h 27m
nonstop
ONT
3:00a
SEA
5:35a
2h 35m
nonstop
Depart: Sat May 21 2016 Return: Tue May 24 2016 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:07a
2h 27m
nonstop
ONT
2:00a
SEA
4:35a
2h 35m
nonstop
Depart: Tue Oct 11 2016 Return: Tue Oct 18 2016 Trip spans 8 days
United
United
SEA
1:40a
ONT
6:03a
4h 23m
1 stop
ONT
11:10a
SEA
3:36p
4h 26m
1 stop
Depart: Wed Sep 28 2016 Return: Sat Oct 1 2016 Trip spans 4 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
1 stop
ONT
10:35a
SEA
2:15p
3h 40m
nonstop
Depart: Tue Oct 18 2016 Return: Tue Oct 25 2016 Trip spans 8 days
American Airlines
American Airlines
SEA
1:15a
ONT
7:31a
6h 16m
1 stop
ONT
2:28a
SEA
9:25a
6h 57m
1 stop
Depart: Fri May 20 2016 Return: Tue May 24 2016 Trip spans 5 days
Major Airline
Major Airline
SEA
11:40p
ONT
2:07a
2h 27m
nonstop
ONT
9:25a
SEA
12:00p
2h 35m
nonstop
Depart: Tue May 31 2016 Return: Tue Jun 7 2016 Trip spans 8 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:07a
2h 27m
nonstop
ONT
2:00a
SEA
4:30a
2h 30m
nonstop
Depart: Sat May 28 2016 Return: Wed Jun 1 2016 Trip spans 5 days
United
United
SEA
6:03a
ONT
12:30p
6h 27m
1 stop
ONT
4:27a
SEA
12:05p
7h 38m
1 stop
Depart: Wed Aug 24 2016 Return: Wed Aug 31 2016 Trip spans 8 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
1 stop
ONT
2:50a
SEA
7:10a
4h 20m
1 stop
Depart: Sun May 22 2016 Return: Tue May 24 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:07a
2h 27m
nonstop
ONT
7:00a
SEA
9:35a
2h 35m
nonstop
Depart: Mon May 16 2016 Return: Wed May 18 2016 Trip spans 3 days
Major Airline
Major Airline
SEA
11:40p
ONT
2:07a
2h 27m
nonstop
ONT
3:00a
SEA
5:35a
2h 35m
nonstop
Depart: Wed Jun 1 2016 Return: Sat Jun 4 2016 Trip spans 4 days
United
United
SEA
2:35a
ONT
7:21a
4h 46m
1 stop
ONT
1:00p
SEA
8:27p
7h 27m
1 stop
Depart: Mon May 23 2016 Return: Tue May 24 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
SEA
4:55p
ONT
7:20p
2h 25m
nonstop
ONT
7:00a
SEA
9:35a
2h 35m
nonstop
Depart: Wed Oct 19 2016 Return: Wed Oct 26 2016 Trip spans 8 days
American Airlines
American Airlines
SEA
3:40a
ONT
6:12a
2h 32m
nonstop
ONT
2:28a
SEA
9:25a
6h 57m
1 stop
Depart: Tue Aug 23 2016 Return: Tue Aug 30 2016 Trip spans 8 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
1 stop
ONT
2:50a
SEA
7:10a
4h 20m
1 stop
Depart: Sat Jun 4 2016 Return: Tue Jun 7 2016 Trip spans 4 days
United
United
SEA
6:03a
ONT
12:30p
6h 27m
1 stop
ONT
1:00p
SEA
5:10p
4h 10m
1 stop
Depart: Fri Sep 16 2016 Return: Sat Sep 17 2016 Trip spans 2 days
Major Airline
Major Airline
SEA
11:40p
ONT
2:12a
2h 32m
nonstop
ONT
10:00a
SEA
12:33p
2h 33m
nonstop
Depart: Tue May 24 2016 Return: Thu May 26 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
ONT
6:07a
2h 27m
nonstop
ONT
2:00a
SEA
4:35a
2h 35m
nonstop
Depart: Fri Oct 28 2016 Return: Sat Oct 29 2016 Trip spans 2 days
American Airlines
American Airlines
SEA
3:40a
ONT
6:12a
2h 32m
nonstop
ONT
2:28a
SEA
9:25a
6h 57m
1 stop
Depart: Wed Sep 7 2016 Return: Sat Sep 10 2016 Trip spans 4 days
Southwest
Southwest
SEA
1:15p
ONT
5:15p
4h 00m
1 stop
ONT
10:35a
SEA
2:15p
3h 40m
nonstop
Direct flights SEA to ONT on Delta
Flight # Depart SEA Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
9108 2:05 pm 4:39 pm Jun 5 - Jun 14
9108 2:10 pm 4:40 pm Jun 4 - Jun 4
9108 2:10 pm 4:40 pm May 31 - May 31
9108 2:10 pm 4:40 pm May 28 - Jun 3
9184 2:10 pm 4:40 pm May 17 - May 23
9184 2:10 pm 4:40 pm May 16 - May 16
9184 2:10 pm 4:40 pm May 8 - May 8
9184 2:10 pm 4:40 pm May 9 - May 15
9184 2:10 pm 4:40 pm May 12 - May 19
9184 2:10 pm 4:40 pm May 20 - May 20
9184 2:10 pm 4:40 pm May 21 - May 26
9184 2:10 pm 4:40 pm May 24 - May 25
9184 2:10 pm 4:40 pm May 27 - May 27
9184 2:20 pm 4:47 pm May 7 - May 7
9184 2:20 pm 4:47 pm May 6 - May 6
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Why aren’t prices accurate 100% of the time?
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Airports
Origin

Seattle
$167
Destination

Ontario
$167