Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 5510 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 5510 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

67%
Arrive within 15 minutes
22 min
Average arrival delay
2.0%
Cancelled
1 min early
Median arrival delay

Based on 349 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(51 flights)
  • Tue81%(48 flights)
  • Wed64%(44 flights)
  • Thu72%(50 flights)
  • Fri56%(50 flights)
  • Sat63%(48 flights)
  • Sun63%(51 flights)
On-time by departure window
  • 9 AM–12 PM80%(64 flights)
  • 12–3 PM65%(186 flights)
  • 3–6 PM41%(32 flights)
  • 9 PM–12 AM73%(60 flights)
On-time trend by month
81%
May

Jun 80% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202567%30
August 202563%24
September 202587%30
October 202581%31
November 202557%28
December 202539%28
January 202642%26
February 202665%26
March 202654%28
April 202677%30
May 202681%31
Departures on time
72%
Diverted
0%
Flights flown
342
Months covered
12

Keep nerding

Based on 349 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.