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Flight Reliability

UA 4006 · United Airlines

Savannah → Washington (SAV–IAD)81% of its flights flew this route. The rest (IAH–BHM, CLE–IAD) are included in these numbers.

91
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
3 min
Average arrival delay
0.8%
Cancelled
11 min early
Median arrival delay

Based on 249 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

UA 4006 departing between 3–6 PM arrived on time 100% of the time, versus 85% between 12–3 PM.

Friday is doing you no favors.

UA 4006 arrived on time 97% of the time on Wednesdays and just 75% on Fridays. That gap is worth planning around.

Better than the United Airlines network average.

UA 4006 arrived on time 87% of the time, versus 79% across the United Airlines network.

Slipping a little lately.

UA 4006 arrived on time 85% of the time over the last three months in the data, compared with 90% in the three months before that.

The breakdown

On-time by weekday
  • Mon79%(34 flights)
  • Tue86%(35 flights)
  • Wed97%(35 flights)
  • Thu92%(36 flights)
  • Fri75%(36 flights)
  • Sat94%(36 flights)
  • Sun83%(35 flights)
On-time by departure window
  • 12–3 PM85%(226 flights)
  • 3–6 PM100%(10 flights)
  • 6–9 PM100%(11 flights)
On-time trend by month
87%
May

Oct 87% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202587%31
November 202580%30
December 202594%31
January 202687%30
February 202689%28
March 202677%30
April 202690%30
May 202687%31
Departures on time
87%
Diverted
0%
Flights flown
247
Months covered
9

Same route, other flights

Keep nerding

Based on 249 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.