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Flight Reliability

UA 1403 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1403 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

78%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
5 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(52 flights)
  • Tue75%(52 flights)
  • Wed73%(51 flights)
  • Thu77%(52 flights)
  • Fri83%(54 flights)
  • Sat76%(45 flights)
  • Sun79%(52 flights)
On-time by departure window
  • 6–9 AM100%(11 flights)
  • 9 AM–12 PM74%(19 flights)
  • 12–3 PM76%(129 flights)
  • 3–6 PM90%(68 flights)
  • 6–9 PM73%(131 flights)
On-time trend by month
79%
May

Jun 79% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%34
July 202550%30
August 202572%43
September 202593%27
October 202596%25
December 202563%30
January 202684%31
February 202678%45
March 202689%35
April 202683%30
May 202679%28
Departures on time
81%
Diverted
0.3%
Flights flown
358
Months covered
11

Keep nerding

Based on 362 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.