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Flight Reliability

AS 1378 · Alaska Airlines

Santa Ana → Seattle (SNA–SEA)

100
Nerd Approved
WanderNerd Reliability Score
94%
Arrive within 15 minutes
8 min early
Average arrival delay
0.5%
Cancelled
15 min early
Median arrival delay

Based on 217 historical flights. Data through May 2026.

What the data says

Saturday is the weak spot.

AS 1378 arrived on time 100% of the time on Mondays. On Saturdays: 87%.

Better than the SNA–SEA route average.

AS 1378 arrived on time 94% of the time, versus 85% across the SNA–SEA route.

Better than the Alaska Airlines network average.

AS 1378 arrived on time 94% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon100%(31 flights)
  • Tue94%(31 flights)
  • Wed100%(31 flights)
  • Thu100%(31 flights)
  • Fri87%(30 flights)
  • Sat87%(30 flights)
  • Sun88%(32 flights)
On-time trend by month
97%
May

Nov 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202593%29
December 202587%31
January 202697%31
February 202696%28
March 202684%31
April 2026100%29
May 202697%31
Departures on time
81%
Diverted
0%
Flights flown
216
Months covered
8

Same route, other flights

Keep nerding

Based on 217 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.