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 $517 2 $517 3 $511 4 $500 5 $475 6 $474
7 $474 8 $400 9 $345 10 $344 11 $361 12 $430 13 $368
14 $364 15 $368 16 $312 17 $309 18 $336 19 $330 20 $350
21 $344 22 $326 23 $312 24 $312 25 $310 26 $318 27 $310
28 $318 29 $350 30 $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 Oct 8 - Oct 23
9015 8:00 am 10:25 am Sep 30 - Oct 5
9015 8:00 am 10:25 am Sep 28 - Oct 3
9015 8:00 am 10:20 am Aug 26 - Sep 26
9015 8:00 am 10:25 am Oct 6 - Oct 7
8992 3:20 pm 5:39 pm Sep 8 - Sep 27
8992 3:20 pm 5:59 pm Sep 28 - Nov 1