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Flight Reliability

UA 3401 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3401 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
7 min
Average arrival delay
2.8%
Cancelled
5 min early
Median arrival delay

Based on 361 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(51 flights)
  • Tue84%(50 flights)
  • Wed86%(51 flights)
  • Thu76%(50 flights)
  • Fri70%(50 flights)
  • Sat79%(48 flights)
  • Sun77%(48 flights)
On-time by departure window
  • 6–9 AM96%(25 flights)
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM81%(221 flights)
  • 3–6 PM63%(78 flights)
  • 6–9 PM74%(19 flights)
On-time trend by month
72%
May

Jun 83% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%29
July 202569%29
August 202583%30
September 202593%30
October 202587%31
November 202586%28
December 202567%30
January 202666%29
February 202675%28
March 202659%29
April 202696%26
May 202672%29
Departures on time
88%
Diverted
0.8%
Flights flown
348
Months covered
12

Keep nerding

Based on 361 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.