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Flight Reliability

UA 738 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 738 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

73%
Arrive within 15 minutes
10 min
Average arrival delay
1.3%
Cancelled
4 min early
Median arrival delay

Based on 472 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon66%(64 flights)
  • Tue77%(62 flights)
  • Wed79%(72 flights)
  • Thu68%(69 flights)
  • Fri74%(69 flights)
  • Sat80%(60 flights)
  • Sun70%(69 flights)
On-time by departure window
  • 3–6 AM84%(25 flights)
  • 9 AM–12 PM77%(347 flights)
  • 3–6 PM67%(15 flights)
  • 6–9 PM55%(78 flights)
On-time trend by month
90%
May

Jun 68% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%59
July 202552%56
August 202559%58
September 202582%51
October 202578%46
November 202569%29
December 202581%31
January 202693%29
February 202681%26
March 202680%30
April 202683%30
May 202690%20
Departures on time
79%
Diverted
0.2%
Flights flown
465
Months covered
12

Keep nerding

Based on 472 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.