Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 1797 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1797 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

82%
Arrive within 15 minutes
4 min
Average arrival delay
0.9%
Cancelled
9 min early
Median arrival delay

Based on 534 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(76 flights)
  • Tue84%(76 flights)
  • Wed90%(68 flights)
  • Thu76%(75 flights)
  • Fri85%(79 flights)
  • Sat81%(74 flights)
  • Sun79%(79 flights)
On-time by departure window
  • 6–9 AM91%(278 flights)
  • 12–3 PM73%(246 flights)
  • 3–6 PM—(3 flights)
On-time trend by month
95%
May

Jun 79% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%33
July 202575%56
August 202571%45
September 202582%27
October 202594%31
November 202590%30
December 202578%45
January 202680%35
February 202679%43
March 202682%62
April 202683%59
May 202695%61
Departures on time
84%
Diverted
0.4%
Flights flown
527
Months covered
12

Keep nerding

Based on 534 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.