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Flight Reliability

DL 780 · Delta Air Lines

Austin → Seattle (AUS–SEA)90% of its flights flew this route. The rest (RSW–DTW) are included in these numbers.

95
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
1 min
Average arrival delay
1.1%
Cancelled
14 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 780 departing between 6–9 AM arrived on time 92% of the time, versus 81% between 12–3 PM.

Tuesday is the weak spot.

DL 780 arrived on time 96% of the time on Saturdays. On Tuesdays: 85%.

Better than the AUS–SEA route average.

DL 780 arrived on time 91% of the time, versus 83% across the AUS–SEA route.

Better than the Delta Air Lines network average.

DL 780 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon90%(51 flights)
  • Tue85%(52 flights)
  • Wed92%(51 flights)
  • Thu88%(51 flights)
  • Fri94%(51 flights)
  • Sat96%(51 flights)
  • Sun92%(52 flights)
On-time by departure window
  • 6–9 AM92%(322 flights)
  • 12–3 PM81%(37 flights)
On-time trend by month
84%
May

Jun 87% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202594%31
August 202590%31
September 202597%30
October 202597%31
November 202593%27
December 202590%30
January 202680%30
February 202693%27
March 202694%31
April 202697%30
May 202684%31
Departures on time
91%
Diverted
0%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.