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Flight Reliability

UA 4434 · United Airlines

Newark → Washington (EWR–DCA)92% of its flights flew this route. The rest (ORD–AVL, EWR–GSO) are included in these numbers.

79
Usually Fine
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min early
Average arrival delay
2.6%
Cancelled
12 min early
Median arrival delay

Based on 341 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

UA 4434 departing between 6–9 AM arrived on time 87% of the time, versus 55% between 12–3 PM.

Friday is doing you no favors.

UA 4434 arrived on time 91% of the time on Sundays. On Fridays: 82%.

Well ahead of the EWR–DCA route.

UA 4434 arrived on time 86% of the time, versus 64% across the EWR–DCA route.

Better than the United Airlines network average.

UA 4434 arrived on time 86% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon88%(48 flights)
  • Tue85%(48 flights)
  • Wed83%(48 flights)
  • Thu89%(47 flights)
  • Fri82%(50 flights)
  • Sat85%(41 flights)
  • Sun91%(46 flights)
On-time by departure window
  • 6–9 AM87%(304 flights)
  • 9 AM–12 PM—(9 flights)
  • 12–3 PM55%(11 flights)
  • 3–6 PM—(2 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
73%
May

Jun 96% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%26
July 202596%26
August 202594%31
September 202592%26
October 202583%30
November 202569%26
December 202577%22
January 202689%26
February 202692%25
March 202687%30
April 202687%30
May 202673%30
Departures on time
90%
Diverted
1.2%
Flights flown
328
Months covered
12

Same route, other flights

Keep nerding

Based on 341 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.