MDW → SEA: cancellations & delays
Over Jan 2023 - Apr 2026, 0.4% of Chicago Midway International Airport (MDW) to Seattle–Tacoma International Airport (SEA) flights were cancelled and 32.2% arrived at least 15 minutes late, across 1,856 flights, flown by WN. Cancellations peak in July.
Check today's live MDW departures →Airport pages: Chicago Midway International Airport (MDW) · Seattle–Tacoma International Airport (SEA)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.