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Route Reliability

Chicago → Raleigh–Durham

ORD–RDU · 646 miles · Chicago O'Hare International Airport to Raleigh–Durham International Airport

72
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
15 min
Average arrival delay
1.9%
Cancelled
3,535
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines79%1,443 flights
  2. 2.American Airlines70%1,943 flights
  3. 3.Frontier Airlines66%149 flights

What the data says

Morning-you made the right choice.

ORD–RDU flights departing between 6–9 AM arrived on time 86% of the time, versus 63% between 3–6 PM.

Friday is doing you no favors.

ORD–RDU flights arrived on time 79% of the time on Tuesdays. On Fridays: 70%.

United Airlines runs this route best.

United Airlines arrived on time 79% of the time on this route; Frontier Airlines managed 66%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon72%(535 flights)
  • Tue79%(465 flights)
  • Wed76%(469 flights)
  • Thu74%(525 flights)
  • Fri70%(523 flights)
  • Sat77%(411 flights)
  • Sun72%(537 flights)
On-time by departure window
  • 12–3 AM—(2 flights)
  • 3–6 AM—(3 flights)
  • 6–9 AM86%(668 flights)
  • 9 AM–12 PM80%(835 flights)
  • 12–3 PM73%(720 flights)
  • 3–6 PM63%(264 flights)
  • 6–9 PM64%(921 flights)
  • 9 PM–12 AM77%(52 flights)
On-time trend by month
82%
May

Jun 72% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%268
July 202566%273
August 202575%267
September 202582%266
October 202576%326
November 202575%296
December 202567%288
January 202672%213
February 202677%243
March 202669%307
April 202672%349
May 202682%369

Same trip, other airports

Keep nerding

Based on 3,535 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.