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Flight Reliability

UA 4432 · United Airlines

Newark → Washington (EWR–DCA)90% of its flights flew this route. The rest (STL–ORD, EWR–DTW) are included in these numbers.

13
Bring Snacks
WanderNerd Reliability Score
58%
Arrive within 15 minutes
40 min
Average arrival delay
9.1%
Cancelled
8 min
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

UA 4432 departing between 9 AM–12 PM arrived on time 88% of the time, versus 48% between 3–6 PM.

Friday is doing you no favors.

UA 4432 arrived on time 72% of the time on Tuesdays and just 52% on Fridays. That gap is worth planning around.

A bit behind the EWR–DCA route.

UA 4432 arrived on time 58% of the time, versus 64% across the EWR–DCA route.

Well behind the United Airlines network.

UA 4432 arrived on time 58% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon57%(46 flights)
  • Tue72%(47 flights)
  • Wed54%(46 flights)
  • Thu53%(47 flights)
  • Fri52%(48 flights)
  • Sat58%(48 flights)
  • Sun61%(46 flights)
On-time by departure window
  • 9 AM–12 PM88%(25 flights)
  • 12–3 PM73%(11 flights)
  • 3–6 PM48%(105 flights)
  • 6–9 PM59%(187 flights)
On-time trend by month
66%
May

Jun 79% → May 66% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%28
July 202538%24
August 202553%30
September 202564%28
October 202573%30
November 202530%20
December 202561%28
January 202661%28
February 202648%25
March 202650%28
April 202663%30
May 202666%29
Departures on time
61%
Diverted
0.6%
Flights flown
328
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.