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Flight Reliability

UA 3700 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3700 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

86%
Arrive within 15 minutes
3 min early
Average arrival delay
4.6%
Cancelled
11 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(49 flights)
  • Tue87%(47 flights)
  • Wed98%(48 flights)
  • Thu80%(49 flights)
  • Fri90%(50 flights)
  • Sat92%(36 flights)
  • Sun82%(50 flights)
On-time by departure window
  • 6–9 AM90%(174 flights)
  • 9 AM–12 PM89%(106 flights)
  • 12–3 PM—(5 flights)
  • 3–6 PM57%(37 flights)
  • 6–9 PM—(2 flights)
  • 9 PM–12 AM—(5 flights)
On-time trend by month
96%
May

Jun 96% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%27
July 202573%30
August 202597%29
September 202587%30
October 202563%27
November 202581%26
December 202596%27
January 202689%27
February 202688%25
March 202684%25
April 202682%28
May 202696%28
Departures on time
91%
Diverted
0%
Flights flown
329
Months covered
12

Keep nerding

Based on 345 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.