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Flight Reliability

UA 3539 · United Airlines

Newark → Charlotte (EWR–CLT)87% of its flights flew this route. The rest (EWR–BNA, EWR–STL) are included in these numbers.

85
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
7 min early
Average arrival delay
2.4%
Cancelled
15 min early
Median arrival delay

Based on 123 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

UA 3539 departing between 9 AM–12 PM arrived on time 89% of the time, versus 71% between 12–3 PM.

Friday is doing you no favors.

UA 3539 arrived on time 95% of the time on Wednesdays and just 74% on Fridays. That gap is worth planning around.

A bit ahead of the EWR–CLT route.

UA 3539 arrived on time 87% of the time, versus 80% across the EWR–CLT route.

Better than the United Airlines network average.

UA 3539 arrived on time 87% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon94%(18 flights)
  • Tue84%(19 flights)
  • Wed95%(19 flights)
  • Thu82%(17 flights)
  • Fri74%(19 flights)
  • Sat91%(11 flights)
  • Sun88%(17 flights)
On-time by departure window
  • 9 AM–12 PM89%(106 flights)
  • 12–3 PM71%(14 flights)
On-time trend by month
73%
May

Aug 100% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 2025100%13
September 2025100%27
October 202577%31
November 202583%24
December 202586%14
May 202673%11
Departures on time
93%
Diverted
0%
Flights flown
120
Months covered
6

Same route, other flights

Keep nerding

Based on 123 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.