Seattle / Tacoma (SEA) to St. Louis (STL) flight deal in economy from $177

Delta Air LinesDLDelta Air LinesSouthwest AirlinesWNSouthwest Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesSTL

Lambert-Saint Louis International Airport

St. Louis, United States
$370 USD
-52%$177 USD
Verified about 12 hours ago
Limited Availability
14% of dates checked are available within 10% of the lowest price

Monday, June 1st, 2026

0 round-trip options

No flight details available for this date.