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

Raleigh/Durham, NC (RDU) to Chicago, IL (MDW) flight delay odds

77.2% of 988 official scheduled RDU-to-MDW flights arrived on time; 11.5% arrived at least 30 minutes late and 2.0% 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 SIGNALGenerally reliable
77.2%arrived on time
11.5%30+ min late
2.0%cancelled
988scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.8%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for RDU to MDW?

Among qualifying RDU-to-MDW departure window results, Early morning had the highest on-time rate: 90.0% of 361 flights. Evening was lowest at 61.5% across 317 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36190.0%4.2%2.5%
Late morning7384.9%8.2%1.4%
Afternoon23376.4%11.2%0.4%
Evening31761.5%21.1%2.8%

Which weekday was most reliable for RDU to MDW?

Among qualifying RDU-to-MDW weekday results, Tuesday had the highest on-time rate: 82.7% of 139 flights. Saturday was lowest at 73.7% across 114 flights.

DayFlightsOn time30+ minCancelled
Monday14875.0%12.8%2.0%
Tuesday13982.7%8.6%1.4%
Wednesday13582.2%11.1%0.0%
Thursday14775.5%12.9%1.4%
Friday14675.3%11.0%2.1%
Saturday11473.7%10.5%5.3%
Sunday15976.1%13.2%2.5%

Which airline was most reliable for RDU to MDW?

Only Southwest Airlines met the RDU-to-MDW airline threshold: 77.2% of 988 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines98877.2%11.5%2.0%

Which month was most reliable for RDU to MDW?

Among qualifying RDU-to-MDW month results, November 2025 had the highest on-time rate: 90.6% of 85 flights. March 2026 was lowest at 60.6% across 66 flights.

MonthFlightsOn time30+ minCancelled
July 202511969.7%16.0%2.5%
August 20259479.8%11.7%2.1%
September 20259088.9%8.9%0.0%
October 20258077.5%7.5%0.0%
November 20258590.6%4.7%3.5%
December 20258982.0%9.0%0.0%
January 20266782.1%3.0%9.0%
February 20265687.5%5.4%1.8%
March 20266660.6%19.7%6.1%
April 20267477.0%13.5%1.4%
May 20268066.2%16.2%0.0%
June 20268867.0%19.3%0.0%

What drove RDU to MDW delay minutes?

Late aircraft was the largest recorded RDU-to-MDW delay category, accounting for 56.3% of 10,780 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.1%
Late aircraft56.3%
National airspace17.7%
Weather3.6%
Security0.3%
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.