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Flight Reliability

AS 124 · Alaska Airlines

Atlanta → Seattle (ATL–SEA)89% of its flights flew this route. The rest (HNL–SEA, LAX–ANC) are included in these numbers.

72
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
2 min
Average arrival delay
1.6%
Cancelled
4 min early
Median arrival delay

Based on 126 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

AS 124 departing between 6–9 AM arrived on time 91% of the time, versus 67% between 6–9 PM.

Friday is doing you no favors.

AS 124 arrived on time 89% of the time on Thursdays and just 65% on Fridays. That gap is worth planning around.

A bit behind the ATL–SEA route.

AS 124 arrived on time 74% of the time, versus 78% across the ATL–SEA route.

A bit behind the Alaska Airlines network.

AS 124 arrived on time 74% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon67%(18 flights)
  • Tue75%(16 flights)
  • Wed75%(20 flights)
  • Thu89%(18 flights)
  • Fri65%(17 flights)
  • Sat86%(14 flights)
  • Sun65%(20 flights)
On-time by departure window
  • 6–9 AM91%(33 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM67%(85 flights)
On-time trend by month
76%
Apr

Oct 50% → Apr 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202550%22
November 202595%20
February 202681%16
March 202670%30
April 202676%21
Departures on time
82%
Diverted
0.8%
Flights flown
123
Months covered
9

Same route, other flights

Keep nerding

Based on 126 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.