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Flight Reliability

DL 494 · Delta Air Lines

Los Angeles → Detroit (LAX–DTW)97% of its flights flew this route. The rest (SFO–DTW) are included in these numbers.

90
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
3 min early
Average arrival delay
0.8%
Cancelled
11 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

DL 494 arrived on time 94% of the time on Saturdays and just 78% on Mondays. That gap is worth planning around.

A bit ahead of the LAX–DTW route.

DL 494 arrived on time 88% of the time, versus 83% across the LAX–DTW route.

A bit ahead of the Delta Air Lines network.

DL 494 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 494 arrived on time 85% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon78%(51 flights)
  • Tue86%(51 flights)
  • Wed90%(48 flights)
  • Thu88%(49 flights)
  • Fri92%(51 flights)
  • Sat94%(49 flights)
  • Sun85%(53 flights)
On-time by departure window
  • 6–9 AM88%(119 flights)
  • 9 AM–12 PM89%(225 flights)
  • 12–3 PM—(8 flights)
On-time trend by month
77%
May

Jun 83% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202574%31
August 2025100%31
September 202593%30
October 2025100%31
November 202593%29
December 202568%25
January 202689%28
February 202689%28
March 202690%30
April 202690%29
May 202677%30
Departures on time
86%
Diverted
0.6%
Flights flown
352
Months covered
12

Same route, other flights

Keep nerding

Based on 357 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.