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Flight Reliability

UA 2237 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 2237 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

77%
Arrive within 15 minutes
9 min
Average arrival delay
0.3%
Cancelled
3 min early
Median arrival delay

Based on 586 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(86 flights)
  • Tue85%(75 flights)
  • Wed77%(83 flights)
  • Thu77%(88 flights)
  • Fri78%(89 flights)
  • Sat82%(74 flights)
  • Sun69%(87 flights)
On-time by departure window
  • 6–9 AM91%(35 flights)
  • 9 AM–12 PM81%(57 flights)
  • 12–3 PM82%(254 flights)
  • 3–6 PM—(7 flights)
  • 6–9 PM69%(229 flights)
On-time trend by month
84%
May

Jun 66% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%38
July 202558%57
August 202563%46
September 202587%54
October 202585%87
November 202578%59
December 202577%48
January 202681%31
February 202693%28
March 202678%50
April 202681%52
May 202684%32
Departures on time
80%
Diverted
0.3%
Flights flown
582
Months covered
12

Keep nerding

Based on 586 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.