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 Chicago to Seattle (CHI - 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 CHI to SEA (Found by others)

Sun Mon Tue Wed Thu Fri Sat
      1 $299 2 $336 3 $336 4 $341
5 $401 6 $320 7 $301 8 $341 9 $350 10 $390 11 $312
12 $389 13 $341 14 $312 15 $312 16 $338 17 $368 18 $301
19 $359 20 $341 21 $324 22 $301 23 $341 24 $324 25 $330
26 $400 27 $315 28 $316 29 $301 30 $314 31 $301  
KAYAK searches hundreds of sites to find the best rate for your next flight from Chicago to Seattle. Get the best flight deal for your Seattle trip!
Here's how it works. Search KAYAK for a flight ticket from Chicago 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 CHI to SEA on Delta
Flight # Depart ORD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
9015 8:00 am 10:25 am Sep 30 - Oct 5
9015 8:00 am 10:25 am Oct 8 - Oct 23
9015 8:00 am 10:25 am Oct 26 - Oct 28
9015 8:00 am 10:25 am Oct 24 - Oct 31
9015 8:00 am 10:20 am Sep 18 - Sep 26
9015 8:00 am 10:25 am Sep 28 - Oct 3
9015 8:00 am 10:25 am Oct 6 - Oct 7
8992 3:20 pm 5:59 pm Sep 28 - Nov 1
8992 3:20 pm 5:39 pm Sep 18 - Sep 27