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Flight Reliability

DL 919 · Delta Air Lines

Atlanta → Las Vegas (ATL–LAS)

78
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
9 min
Average arrival delay
0.3%
Cancelled
4 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 919 departing between 3–6 PM arrived on time 86% of the time, versus 71% between 6–9 PM.

Thursdays have been rough.

DL 919 arrived on time 89% of the time on Wednesdays and just 55% on Thursdays. That gap is worth planning around.

A bit behind the ATL–LAS route.

DL 919 arrived on time 73% of the time, versus 76% across the ATL–LAS route.

Lagging the Delta Air Lines network.

DL 919 arrived on time 73% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon70%(50 flights)
  • Tue81%(52 flights)
  • Wed89%(52 flights)
  • Thu55%(51 flights)
  • Fri59%(51 flights)
  • Sat77%(52 flights)
  • Sun79%(53 flights)
On-time by departure window
  • 3–6 PM86%(36 flights)
  • 6–9 PM71%(325 flights)
On-time trend by month
55%
May

Jun 61% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%28
July 202558%31
August 202584%31
September 202583%30
October 202570%30
November 202569%29
December 202584%31
January 202681%31
February 202671%28
March 202687%31
April 202670%30
May 202655%31
Departures on time
74%
Diverted
0.5%
Flights flown
361
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.