SEARCH ONE AND DONE. - Compare hundreds of travel sites at once.
Choose where to book.
Find deals from over 400 airlines worldwide.

Cheap Flights from Ontario to Seattle (ONT - SEA)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
Choose Sites to Compare vs. KAYAK

Best fares from ONT to SEA (Found by others)

Sun Mon Tue Wed Thu Fri Sat
            1 $218
2 $265 3 $245 4 $208 5 $194 6 $205 7 $220 8 $186
9 $209 10 $190 11 $188 12 $185 13 $190 14 $185 15 $185
16 $216 17 $190 18 $222 19 $185 20 $208 21 $232 22 $225
23 $232 24 $225 25 $277 26 $338 27 $222 28 $232 29
$232
30 $424            
KAYAK searches hundreds of sites to find the best rate for your next flight from Ontario to Seattle. Get the best flight deal for your Seattle trip!
Here's how it works. Search KAYAK for a flight ticket from Ontario to Seattle. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Direct flights ONT to SEA on Delta
Flight # Depart ONT Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
9044 6:15 am 8:57 am Nov 3 - Nov 3
9044 6:15 am 8:57 am Nov 23 - Nov 30
9044 6:15 am 8:57 am Dec 1 - Dec 1
9044 6:15 am 8:57 am Nov 19 - Nov 29
9044 6:15 am 8:57 am Nov 18 - Nov 18
9044 6:15 am 8:57 am Nov 17 - Nov 17
9044 6:15 am 8:57 am Nov 12 - Nov 16
9044 6:15 am 8:57 am Nov 10 - Nov 10
9044 6:15 am 8:57 am Nov 7 - Nov 15
9044 6:15 am 8:57 am Nov 4 - Nov 6
9044 6:15 am 8:57 am Nov 2 - Nov 9
9044 6:25 am 9:00 am Oct 27 - Nov 1
9099 10:25 am 1:04 pm Nov 2 - Nov 5
9099 10:25 am 1:04 pm Nov 6 - Nov 15
9099 10:25 am 1:04 pm Nov 9 - Nov 9
9099 10:25 am 1:04 pm Nov 10 - Nov 10
9099 10:25 am 1:04 pm Nov 16 - Nov 23
9099 10:25 am 1:04 pm Dec 1 - Dec 6
9099 10:25 am 1:04 pm Nov 25 - Dec 5
9099 10:25 am 1:04 pm Nov 24 - Nov 24
9099 10:25 am 1:04 pm Nov 22 - Nov 22
9099 10:35 am 1:05 pm Oct 23 - Nov 1