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 Seattle to St Louis (SEA - STL)

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 SEA to STL (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $420 2 $324 3 $324 4 $324 5 $324 6 $318
7 $324 8 $324 9 $319 10 $318 11 $319 12 $319 13 $319
14 $448 15 $324 16 $318 17 $309 18 $334 19 $324 20 $309
21 $324 22 $334 23 $299 24 $324 25 $315 26 $299 27
$299
28 $324 29 $315 30 $324        
KAYAK searches hundreds of sites to find the best rate for your next flight from Seattle to St Louis. Get the best flight deal for your St Louis trip!
Here's how it works. Search KAYAK for a flight ticket from Seattle to St Louis. 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 SEA to STL on Delta
Flight # Depart SEA Arrive STL Sun Mon Tue Wed Thu Fri Sat Valid Between
8989 11:40 am 5:21 pm Sep 2 - Sep 27
8989 11:40 am 5:21 pm Aug 25 - Sep 1
8989 11:40 am 5:25 pm Sep 28 - Oct 2