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Flight Reliability

UA 3704 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 3704 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

72%
Arrive within 15 minutes
7 min
Average arrival delay
5.3%
Cancelled
5 min early
Median arrival delay

Based on 323 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(45 flights)
  • Tue71%(42 flights)
  • Wed74%(39 flights)
  • Thu68%(47 flights)
  • Fri57%(46 flights)
  • Sat88%(43 flights)
  • Sun74%(43 flights)
On-time by departure window
  • 6–9 AM100%(21 flights)
  • 9 AM–12 PM75%(69 flights)
  • 12–3 PM67%(205 flights)
  • 3–6 PM—(1 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
97%
May

Jun 68% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%28
July 202556%27
August 202570%30
September 202573%30
October 202568%31
November 202558%24
December 202573%40
February 202672%18
March 202663%27
April 202682%11
May 202697%31
Departures on time
85%
Diverted
0.3%
Flights flown
305
Months covered
12

Keep nerding

Based on 323 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.