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Flight Reliability

DL 4945 · Delta Air Lines

Des Moines → New York (DSM–LGA)95% of its flights flew this route. The rest (ATL–CHA, CHA–ATL) are included in these numbers.

64
A Little Dicey
WanderNerd Reliability Score
76%
Arrive within 15 minutes
20 min
Average arrival delay
3.3%
Cancelled
11 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

The 9 AM–12 PM departure wins.

DL 4945 departing between 9 AM–12 PM arrived on time 83% of the time, versus 76% between 6–9 AM.

Thursdays have been rough.

DL 4945 arrived on time 85% of the time on Wednesdays and just 67% on Thursdays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 4945 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

Keep a backup plan handy.

DL 4945 was cancelled 3.3% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon73%(48 flights)
  • Tue74%(49 flights)
  • Wed85%(52 flights)
  • Thu67%(51 flights)
  • Fri84%(51 flights)
  • Sat74%(49 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 6–9 AM76%(285 flights)
  • 9 AM–12 PM83%(48 flights)
  • 12–3 PM—(8 flights)
  • 3–6 PM—(9 flights)
On-time trend by month
81%
May

Jun 68% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%31
July 202585%34
August 202594%33
September 202590%29
October 202579%28
November 202576%25
December 202563%27
January 202683%29
February 202664%25
March 202657%28
April 202670%30
May 202681%31
Departures on time
77%
Diverted
0.5%
Flights flown
350
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.