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Flight Reliability

AS 549 · Alaska Airlines

Seattle → Dallas–Fort Worth (SEA–DFW)85% of its flights flew this route. The rest (PDX–SJC, DFW–SEA) are included in these numbers.

73
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
10 min
Average arrival delay
0.3%
Cancelled
0 min
Median arrival delay

Based on 306 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

AS 549 departing between 9 AM–12 PM arrived on time 87% of the time, versus 61% between 6–9 PM.

Thursdays have been rough.

AS 549 arrived on time 80% of the time on Wednesdays and just 55% on Thursdays. That gap is worth planning around.

Lagging the SEA–DFW route.

AS 549 arrived on time 70% of the time, versus 77% across the SEA–DFW route.

Lagging the Alaska Airlines network.

AS 549 arrived on time 70% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon71%(45 flights)
  • Tue75%(47 flights)
  • Wed80%(45 flights)
  • Thu55%(47 flights)
  • Fri70%(46 flights)
  • Sat74%(31 flights)
  • Sun68%(41 flights)
On-time by departure window
  • 9 AM–12 PM87%(46 flights)
  • 12–3 PM68%(238 flights)
  • 6–9 PM61%(18 flights)
On-time trend by month
76%
May

Jun 38% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202538%16
July 202533%27
August 202563%27
September 202575%28
October 202571%31
November 202590%20
December 202570%30
February 2026100%15
March 202689%28
April 202678%37
May 202676%37
Departures on time
74%
Diverted
1.0%
Flights flown
302
Months covered
12

Same route, other flights

Keep nerding

Based on 306 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.