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Flight Reliability

UA 563 · United Airlines

Chicago → Newark (ORD–EWR)96% of its flights flew this route. The rest (LAS–ORD, LAX–TPA) are included in these numbers.

95
Nerd Approved
WanderNerd Reliability Score
92%
Arrive within 15 minutes
7 min early
Average arrival delay
1.1%
Cancelled
12 min early
Median arrival delay

Based on 371 historical flights. Data through May 2026.

What the data says

Skip Monday if you can.

UA 563 arrived on time 96% of the time on Wednesdays. On Mondays: 87%.

Well ahead of the ORD–EWR route.

UA 563 arrived on time 92% of the time, versus 70% across the ORD–EWR route.

Better than the United Airlines network average.

UA 563 arrived on time 92% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon87%(53 flights)
  • Tue96%(51 flights)
  • Wed96%(52 flights)
  • Thu92%(52 flights)
  • Fri92%(52 flights)
  • Sat91%(53 flights)
  • Sun87%(54 flights)
On-time by departure window
  • 12–3 AM—(7 flights)
  • 6–9 AM92%(352 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM—(4 flights)
On-time trend by month
97%
May

Jun 97% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%37
July 202587%31
August 202590%31
September 202597%30
October 202580%30
November 202586%29
December 202594%31
January 202687%30
February 202696%26
March 202690%31
April 202697%30
May 202697%31
Departures on time
92%
Diverted
0%
Flights flown
367
Months covered
12

Same route, other flights

Keep nerding

Based on 371 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.