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

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

67.6% of 2,104 official scheduled MDW-to-DCA flights arrived on time; 19.3% arrived at least 30 minutes late and 2.1% 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
67.6%arrived on time
19.3%30+ min late
2.1%cancelled
2,104scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.4%all scheduled flights
120+ minutes late3.3%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+12.4 mincompleted flights

Which departure time was most reliable for MDW to DCA?

Among qualifying MDW-to-DCA departure window results, Early morning had the highest on-time rate: 89.6% of 483 flights. Evening was lowest at 53.7% across 607 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning48389.6%3.5%0.8%
Late morning34475.0%14.5%1.2%
Afternoon65160.8%22.3%2.3%
Evening60753.7%30.8%3.6%

Which weekday was most reliable for MDW to DCA?

Among qualifying MDW-to-DCA weekday results, Tuesday had the highest on-time rate: 74.6% of 315 flights. Sunday was lowest at 59.9% across 307 flights.

DayFlightsOn time30+ minCancelled
Monday30865.9%19.8%2.9%
Tuesday31574.6%14.9%1.3%
Wednesday31171.7%16.7%1.9%
Thursday30765.8%24.4%1.3%
Friday30463.5%23.0%1.3%
Saturday25272.2%13.1%3.2%
Sunday30759.9%22.5%3.3%

Which airline was most reliable for MDW to DCA?

Only Southwest Airlines met the MDW-to-DCA airline threshold: 67.6% of 2,104 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,10467.6%19.3%2.1%

Which month was most reliable for MDW to DCA?

Among qualifying MDW-to-DCA month results, September 2025 had the highest on-time rate: 78.4% of 176 flights. March 2026 was lowest at 59.1% across 181 flights.

MonthFlightsOn time30+ minCancelled
July 202518159.7%23.2%6.6%
August 202518175.1%17.1%0.6%
September 202517678.4%11.4%0.0%
October 202518168.5%17.1%0.0%
November 202517063.5%22.9%5.9%
December 202517367.1%18.5%0.0%
January 202617971.5%12.8%6.1%
February 202615772.0%14.0%0.6%
March 202618159.1%28.2%3.3%
April 202617370.5%17.3%0.6%
May 202617661.9%23.9%0.0%
June 202617664.2%25.0%1.7%

What drove MDW to DCA delay minutes?

National airspace was the largest recorded MDW-to-DCA delay category, accounting for 39.1% of 36,623 BTS-attributed delay minutes during July 2025–June 2026.

Airline23.2%
Late aircraft35.4%
National airspace39.1%
Weather2.2%
Security0.1%
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.