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Flight Reliability

DL 390 · Delta Air Lines

Los Angeles → Atlanta (LAX–ATL)

94
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
3 min
Average arrival delay
0.3%
Cancelled
7 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Skip Tuesday if you can.

DL 390 arrived on time 94% of the time on Thursdays. On Tuesdays: 81%.

Better than the LAX–ATL route average.

DL 390 arrived on time 89% of the time, versus 77% across the LAX–ATL route.

Better than the Delta Air Lines network average.

DL 390 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon88%(51 flights)
  • Tue81%(52 flights)
  • Wed90%(52 flights)
  • Thu94%(52 flights)
  • Fri92%(52 flights)
  • Sat86%(51 flights)
  • Sun89%(53 flights)
On-time by departure window
  • 3–6 AM88%(16 flights)
  • 6–9 AM89%(347 flights)
On-time trend by month
83%
May

Jun 97% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202590%30
August 2025100%31
September 2025100%30
October 202597%31
November 202587%30
December 202561%31
January 202684%31
February 202675%28
March 202694%31
April 202697%30
May 202683%30
Departures on time
88%
Diverted
0.3%
Flights flown
363
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.