BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DCA→MDW

Washington, DC (DCA) to Chicago, IL (MDW) flight delay odds

74.6% of 2,104 official scheduled DCA-to-MDW flights arrived on time; 14.5% arrived at least 30 minutes late and 2.8% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
74.6%arrived on time
14.5%30+ min late
2.8%cancelled
2,104scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.6%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+8.5 mincompleted flights

Which departure time was most reliable for DCA to MDW?

Among qualifying DCA-to-MDW departure window results, Early morning had the highest on-time rate: 89.3% of 392 flights. Night was lowest at 59.3% across 216 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning39289.3%5.9%2.3%
Late morning62581.1%7.4%1.9%
Afternoon45171.8%16.2%2.2%
Evening42061.9%25.0%4.5%
Night21659.3%26.9%3.7%

Which weekday was most reliable for DCA to MDW?

Among qualifying DCA-to-MDW weekday results, Saturday had the highest on-time rate: 82.5% of 252 flights. Friday was lowest at 68.4% across 304 flights.

DayFlightsOn time30+ minCancelled
Monday30873.4%15.6%4.2%
Tuesday31581.9%11.1%1.9%
Wednesday31176.2%15.1%1.9%
Thursday30770.4%17.6%2.9%
Friday30468.4%16.8%2.3%
Saturday25282.5%9.5%2.4%
Sunday30770.4%15.0%3.6%

Which airline was most reliable for DCA to MDW?

Only Southwest Airlines met the DCA-to-MDW airline threshold: 74.6% of 2,104 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,10474.6%14.5%2.8%

Which month was most reliable for DCA to MDW?

Among qualifying DCA-to-MDW month results, September 2025 had the highest on-time rate: 88.1% of 176 flights. March 2026 was lowest at 59.7% across 181 flights.

MonthFlightsOn time30+ minCancelled
July 202518160.2%23.8%6.6%
August 202518179.0%12.2%1.7%
September 202517688.1%8.0%0.0%
October 202518179.6%13.3%0.0%
November 202517070.6%14.7%7.6%
December 202517376.9%12.1%0.0%
January 202617980.4%8.4%7.3%
February 202615782.2%8.9%0.6%
March 202618159.7%26.0%5.0%
April 202617378.6%9.2%0.0%
May 202617670.5%18.2%0.0%
June 202617670.5%18.2%4.0%

What drove DCA to MDW delay minutes?

Late aircraft was the largest recorded DCA-to-MDW delay category, accounting for 58.1% of 28,802 BTS-attributed delay minutes during July 2025–June 2026.

Airline23.7%
Late aircraft58.1%
National airspace13.0%
Weather5.3%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.