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Route Reliability

Chicago → Knoxville

ORD–TYS · 475 miles · Chicago O'Hare International Airport to McGhee Tyson Airport

51
A Little Dicey
WanderNerd Reliability Score
67%
Arrive within 15 minutes
29 min
Average arrival delay
3.4%
Cancelled
2,731
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines70%1,454 flights
  2. 2.American Airlines64%1,277 flights

What the data says

Morning flights do better here.

ORD–TYS flights departing between 6–9 AM arrived on time 78% of the time, versus 50% between 9 PM–12 AM.

Monday is the weak spot.

ORD–TYS flights arrived on time 71% of the time on Tuesdays. On Mondays: 63%.

United Airlines has a slight edge here.

United Airlines arrived on time 70% of the time on this route; American Airlines managed 64%.

Keep a backup plan handy.

This route was cancelled 3.4% of the time. Typical for U.S. flights is around 1–2%.

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
  • Mon63%(381 flights)
  • Tue71%(374 flights)
  • Wed66%(379 flights)
  • Thu68%(379 flights)
  • Fri66%(386 flights)
  • Sat71%(340 flights)
  • Sun65%(394 flights)
On-time by departure window
  • 6–9 AM78%(466 flights)
  • 9 AM–12 PM75%(749 flights)
  • 12–3 PM65%(615 flights)
  • 3–6 PM61%(154 flights)
  • 6–9 PM54%(639 flights)
  • 9 PM–12 AM50%(10 flights)
On-time trend by month
74%
May

Jun 63% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%237
July 202565%237
August 202572%237
September 202583%225
October 202573%270
November 202562%239
December 202553%204
January 202657%161
February 202663%169
March 202659%188
April 202673%223
May 202674%243

Same trip, other airports

Keep nerding

Based on 2,731 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.