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Flight Reliability

AS 1198 · Alaska Airlines

Seattle → San Diego (SEA–SAN)

66
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
13 min
Average arrival delay
3.4%
Cancelled
2 min
Median arrival delay

Based on 147 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

AS 1198 arrived on time 90% of the time on Saturdays and just 52% on Fridays. That gap is worth planning around.

A bit behind the SEA–SAN route.

AS 1198 arrived on time 73% of the time, versus 79% across the SEA–SAN route.

Lagging the Alaska Airlines network.

AS 1198 arrived on time 73% of the time, versus 80% across the Alaska Airlines network.

Keep a backup plan handy.

AS 1198 was cancelled 3.4% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon70%(20 flights)
  • Tue86%(21 flights)
  • Wed83%(18 flights)
  • Thu71%(21 flights)
  • Fri52%(21 flights)
  • Sat90%(20 flights)
  • Sun62%(21 flights)
On-time by departure window
  • 9 AM–12 PM—(6 flights)
  • 12–3 PM74%(136 flights)
On-time trend by month
76%
Oct

Jun 73% → Oct 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202566%29
August 202568%28
September 202583%30
October 202576%25
Departures on time
75%
Diverted
0%
Flights flown
142
Months covered
5

Same route, other flights

Keep nerding

Based on 147 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.