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Flight Reliability

UA 355 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 355 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

89%
Arrive within 15 minutes
5 min early
Average arrival delay
1.0%
Cancelled
11 min early
Median arrival delay

Based on 411 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon91%(58 flights)
  • Tue86%(55 flights)
  • Wed89%(55 flights)
  • Thu92%(63 flights)
  • Fri86%(63 flights)
  • Sat91%(54 flights)
  • Sun92%(59 flights)
On-time by departure window
  • 6–9 AM95%(189 flights)
  • 9 AM–12 PM86%(202 flights)
  • 3–6 PM75%(16 flights)
On-time trend by month
87%
May

Jul 87% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202587%31
August 202597%31
September 202597%31
October 202596%45
November 202593%30
December 202587%31
January 202672%29
February 202686%28
March 202691%55
April 202690%31
May 202687%60
Departures on time
91%
Diverted
0%
Flights flown
407
Months covered
12

Keep nerding

Based on 411 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.