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Flight Reliability

UA 4408 · United Airlines

Washington → Newark (DCA–EWR)87% of its flights flew this route. The rest (EWR–BTV, PIT–EWR) are included in these numbers.

70
Usually Fine
WanderNerd Reliability Score
80%
Arrive within 15 minutes
8 min
Average arrival delay
4.3%
Cancelled
9 min early
Median arrival delay

Based on 394 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

UA 4408 departing between 3–6 PM arrived on time 83% of the time, versus 69% between 12–3 PM.

Saturdays have been rough.

UA 4408 arrived on time 94% of the time on Sundays and just 70% on Saturdays. That gap is worth planning around.

Better than the DCA–EWR route average.

UA 4408 arrived on time 80% of the time, versus 71% across the DCA–EWR route.

Keep a backup plan handy.

UA 4408 was cancelled 4.3% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon77%(53 flights)
  • Tue86%(55 flights)
  • Wed84%(55 flights)
  • Thu75%(52 flights)
  • Fri71%(55 flights)
  • Sat70%(54 flights)
  • Sun94%(53 flights)
On-time by departure window
  • 9 AM–12 PM80%(332 flights)
  • 12–3 PM69%(32 flights)
  • 3–6 PM83%(12 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
83%
May

Jun 90% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202570%30
August 202584%31
September 202577%30
October 202580%30
November 202571%51
December 202577%31
January 202686%29
February 202677%26
March 202673%30
April 202693%30
May 202683%29
Departures on time
79%
Diverted
0%
Flights flown
377
Months covered
12

Same route, other flights

Keep nerding

Based on 394 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.