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Flight Reliability

DL 557 · Delta Air Lines

Atlanta → New York (ATL–LGA)99% of its flights flew this route. The rest (DTW–MSN) are included in these numbers.

87
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
3 min early
Average arrival delay
1.8%
Cancelled
11 min early
Median arrival delay

Based on 340 historical flights. Data through May 2026.

What the data says

Tuesdays have been rough.

DL 557 arrived on time 94% of the time on Wednesdays and just 78% on Tuesdays. That gap is worth planning around.

Better than the ATL–LGA route average.

DL 557 arrived on time 88% of the time, versus 73% across the ATL–LGA route.

A bit ahead of the Delta Air Lines network.

DL 557 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue78%(51 flights)
  • Wed94%(52 flights)
  • Thu88%(50 flights)
  • Fri94%(51 flights)
  • Sat84%(31 flights)
  • Sun88%(48 flights)
On-time by departure window
  • 9 AM–12 PM88%(331 flights)
  • 3–6 PM—(2 flights)
On-time trend by month
100%
May

Jun 81% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%26
July 202592%26
August 2025100%28
September 202593%30
October 202584%31
November 202589%28
December 202574%31
January 202685%27
February 202696%22
March 202681%26
April 202678%27
May 2026100%31
Departures on time
87%
Diverted
0.3%
Flights flown
333
Months covered
12

Same route, other flights

Keep nerding

Based on 340 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.