Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 4951 · Delta Air Lines

Memphis → New York (MEM–LGA)84% of its flights flew this route. The rest (IND–LGA, LGA–IND) are included in these numbers.

73
Usually Fine
WanderNerd Reliability Score
83%
Arrive within 15 minutes
5 min
Average arrival delay
3.2%
Cancelled
11 min early
Median arrival delay

Based on 379 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 4951 departing between 6–9 AM arrived on time 86% of the time, versus 58% between 12–3 PM.

Mondays have been rough.

DL 4951 arrived on time 87% of the time on Fridays and just 71% on Mondays. That gap is worth planning around.

A bit ahead of the MEM–LGA route.

DL 4951 arrived on time 83% of the time, versus 78% across the MEM–LGA route.

Keep a backup plan handy.

DL 4951 was cancelled 3.2% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon71%(52 flights)
  • Tue86%(50 flights)
  • Wed83%(53 flights)
  • Thu85%(54 flights)
  • Fri87%(53 flights)
  • Sat83%(48 flights)
  • Sun85%(52 flights)
On-time by departure window
  • 6–9 AM86%(301 flights)
  • 9 AM–12 PM81%(21 flights)
  • 12–3 PM58%(24 flights)
  • 3–6 PM69%(16 flights)
On-time trend by month
69%
May

Jun 86% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%28
July 202586%29
August 202590%30
September 202593%30
October 202587%30
November 202589%27
December 202583%30
January 202682%28
February 202688%25
March 202677%26
April 202675%28
May 202669%51
Departures on time
88%
Diverted
1.3%
Flights flown
362
Months covered
12

Same route, other flights

Keep nerding

Based on 379 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.