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Route Reliability

Raleigh–Durham → Chicago

RDU–MDW · 632 miles · Raleigh–Durham International Airport to Chicago Midway International Airport

78
Usually Fine
WanderNerd Reliability Score
82%
Arrive within 15 minutes
4 min
Average arrival delay
2.1%
Cancelled
1,012
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 82% of the time across 1,012 flights. No comparison to make.

What the data says

Morning flights do better here.

RDU–MDW flights departing between 3–6 AM arrived on time 97% of the time, versus 64% between 6–9 PM.

Sunday scaries are real for this one.

RDU–MDW flights arrived on time 86% of the time on Tuesdays. On Sundays: 77%.

Recent months have been rougher.

RDU–MDW flights arrived on time 72% of the time over the last three months in the data, compared with 88% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon80%(148 flights)
  • Tue86%(138 flights)
  • Wed86%(139 flights)
  • Thu81%(146 flights)
  • Fri81%(146 flights)
  • Sat81%(107 flights)
  • Sun77%(160 flights)
On-time by departure window
  • 3–6 AM97%(130 flights)
  • 6–9 AM91%(221 flights)
  • 9 AM–12 PM90%(81 flights)
  • 12–3 PM87%(145 flights)
  • 3–6 PM78%(114 flights)
  • 6–9 PM64%(288 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
70%
May

Jun 82% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%110
July 202574%114
August 202582%92
September 202589%90
October 202581%80
November 202594%82
December 202584%89
January 202690%61
February 202689%55
March 202667%60
April 202679%72
May 202670%79

Same trip, other airports

Keep nerding

Based on 1,012 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.