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Flight Reliability

AS 424 · Alaska Airlines

Seattle → Dallas–Fort Worth (SEA–DFW)96% of its flights flew this route. The rest (SEA–DEN, PSP–SFO) are included in these numbers.

81
Pretty Reliable
WanderNerd Reliability Score
76%
Arrive within 15 minutes
4 min
Average arrival delay
0.9%
Cancelled
1 min early
Median arrival delay

Based on 338 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

AS 424 departing between 6–9 PM arrived on time 82% of the time, versus 27% between 9 AM–12 PM.

Friday is doing you no favors.

AS 424 arrived on time 83% of the time on Wednesdays. On Fridays: 72%.

A bit behind the Alaska Airlines network.

AS 424 arrived on time 76% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon73%(51 flights)
  • Tue76%(49 flights)
  • Wed83%(48 flights)
  • Thu77%(48 flights)
  • Fri72%(46 flights)
  • Sat77%(44 flights)
  • Sun76%(49 flights)
On-time by departure window
  • 9 AM–12 PM27%(11 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM77%(212 flights)
  • 6–9 PM82%(108 flights)
On-time trend by month
90%
May

Jun 43% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202543%30
July 202559%29
August 202574%31
September 202573%30
October 202597%29
November 202593%29
December 202573%30
January 202676%25
February 202685%27
March 202694%31
April 202660%25
May 202690%19
Departures on time
73%
Diverted
0%
Flights flown
335
Months covered
12

Same route, other flights

Keep nerding

Based on 338 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.