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Flight Reliability

UA 3429 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3429 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

82%
Arrive within 15 minutes
12 min
Average arrival delay
3.7%
Cancelled
8 min early
Median arrival delay

Based on 325 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(48 flights)
  • Tue83%(42 flights)
  • Wed77%(43 flights)
  • Thu89%(44 flights)
  • Fri81%(43 flights)
  • Sat69%(45 flights)
  • Sun88%(48 flights)
On-time by departure window
  • 6–9 AM77%(22 flights)
  • 9 AM–12 PM77%(39 flights)
  • 12–3 PM90%(29 flights)
  • 3–6 PM82%(223 flights)
On-time trend by month
100%
May

Jun 80% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202577%30
August 202587%30
September 202597%30
October 202583%29
November 202560%20
December 202581%31
January 202682%28
February 202675%28
March 202670%27
May 2026100%25
Departures on time
85%
Diverted
0%
Flights flown
313
Months covered
12

Keep nerding

Based on 325 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.