IAD → MDW: cancellations & delays
Over Jan 2023 - Apr 2026, 1.6% of Washington Dulles International Airport (IAD) to Chicago Midway International Airport (MDW) flights were cancelled and 15.2% arrived at least 15 minutes late, across 906 flights, flown by WN. Cancellations peak in January.
Check today's live IAD departures →Airport pages: Washington Dulles International Airport (IAD) · Chicago Midway International Airport (MDW)
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.