Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 737 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 737 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

68%
Arrive within 15 minutes
17 min
Average arrival delay
0.8%
Cancelled
2 min early
Median arrival delay

Based on 488 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon59%(66 flights)
  • Tue80%(70 flights)
  • Wed65%(69 flights)
  • Thu70%(70 flights)
  • Fri52%(67 flights)
  • Sat73%(69 flights)
  • Sun74%(73 flights)
On-time by departure window
  • 9 AM–12 PM18%(11 flights)
  • 12–3 PM89%(65 flights)
  • 3–6 PM78%(115 flights)
  • 6–9 PM54%(211 flights)
  • 9 PM–12 AM78%(82 flights)
On-time trend by month
38%
May

Jun 78% → May 38% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%58
July 202577%53
August 202563%49
September 202563%30
October 202573%37
November 202588%25
December 202575%47
January 202677%31
February 202668%28
March 202678%54
April 202623%30
May 202638%42
Departures on time
73%
Diverted
0%
Flights flown
484
Months covered
12

Keep nerding

Based on 488 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.