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Flight Reliability

UA 3430 · United Airlines

Columbus → Washington (CMH–IAD)92% of its flights flew this route. The rest (IAD–LGA, BUF–IAD) are included in these numbers.

96
Nerd Approved
WanderNerd Reliability Score
95%
Arrive within 15 minutes
7 min early
Average arrival delay
1.8%
Cancelled
10 min early
Median arrival delay

Based on 383 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 9 AM–12 PM arrived on time 100% of the time, against 95% between 6–9 AM.

Friday has been the better bet.

A small edge: 96% on time on Fridays against 93% on Mondays.

Better than the CMH–IAD route average.

UA 3430 arrived on time 95% of the time, versus 83% across the CMH–IAD route.

Well ahead of the United Airlines network.

UA 3430 arrived on time 95% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon93%(53 flights)
  • Tue96%(50 flights)
  • Wed94%(52 flights)
  • Thu96%(54 flights)
  • Fri96%(56 flights)
  • Sat95%(56 flights)
  • Sun93%(55 flights)
On-time by departure window
  • 6–9 AM95%(363 flights)
  • 9 AM–12 PM100%(10 flights)
  • 12–3 PM—(2 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
97%
May

Jun 97% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202593%30
August 202594%31
September 202597%30
October 202597%31
November 202587%30
December 202581%31
January 202697%29
February 2026100%27
March 202698%46
April 2026100%30
May 202697%31
Departures on time
93%
Diverted
0%
Flights flown
376
Months covered
12

Same route, other flights

Keep nerding

Based on 383 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.