IATASTL·ICAOKSTL·19airlines·93destinations·United States
St Louis Lambert International Airport (STL) currently has nonstop service to 93 destinations on 19 airlines in our latest departure data. The busiest route is to Chicago (ORD), served by 4 carriers, and the largest operator here is Southwest Airlines with nonstops to 58 destinations. 10 of its routes are international.
Route data as of June 15, 2026, based on a 7-day departures sample.