Seattle→ChicagoNonstop Flight TimeSEA–MDW

Seattle (Seattle-Tacoma International Airport) to Chicago (Chicago Midway International Airport).

Direct flights from SEA to MDW have an estimated flight time of about 4h 9m, based on the 1,729-mile great-circle distance. Our current captured departure sample includes 2-3/day across 1 captured airline, with Southwest Airlines appearing most often in that sample. Captured departure times run from 05:00 to 23:05 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to MDW, last seen June 15, 2026. Frequency uses 17 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.