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Flight Reliability

DL 1218 · Delta Air Lines

Detroit → Austin (DTW–AUS)96% of its flights flew this route. The rest (AUS–DTW) are included in these numbers.

89
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min early
Average arrival delay
1.3%
Cancelled
8 min early
Median arrival delay

Based on 380 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

DL 1218 departing between 6–9 AM arrived on time 87% of the time, versus 71% between 9 AM–12 PM.

Sunday scaries are real for this one.

DL 1218 arrived on time 94% of the time on Tuesdays. On Sundays: 80%.

A bit ahead of the DTW–AUS route.

DL 1218 arrived on time 86% of the time, versus 80% across the DTW–AUS route.

A bit ahead of the Delta Air Lines network.

DL 1218 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon87%(52 flights)
  • Tue94%(54 flights)
  • Wed82%(54 flights)
  • Thu93%(54 flights)
  • Fri83%(53 flights)
  • Sat85%(54 flights)
  • Sun80%(54 flights)
On-time by departure window
  • 6–9 AM87%(358 flights)
  • 9 AM–12 PM71%(17 flights)
On-time trend by month
90%
May

Jun 87% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202597%31
August 202597%31
September 202587%30
October 202590%30
November 202590%30
December 202573%40
January 202663%35
February 202689%28
March 202687%31
April 202693%30
May 202690%29
Departures on time
87%
Diverted
0%
Flights flown
375
Months covered
12

Same route, other flights

Keep nerding

Based on 380 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.