Flight Reliability
AS 1433 · Alaska Airlines
Seattle → Phoenix (SEA–PHX)99% of its flights flew this route. The rest (SEA–IAH) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 104 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AS 1433 departing between 6–9 PM arrived on time 83% of the time, versus 63% between 9 PM–12 AM.
Sunday scaries are real for this one.
AS 1433 arrived on time 94% of the time on Mondays and just 67% on Sundays. That gap is worth planning around.
The breakdown
- Mon94%(16 flights)
- Tue86%(14 flights)
- Wed87%(15 flights)
- Thu75%(16 flights)
- Fri69%(16 flights)
- Sat82%(11 flights)
- Sun67%(15 flights)
- 6–9 PM83%(84 flights)
- 9 PM–12 AM63%(19 flights)
73%
May
Feb 71% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| February 2026 | 71% | 14 |
| March 2026 | 79% | 29 |
| April 2026 | 90% | 29 |
| May 2026 | 73% | 30 |
- Departures on time
- 77%
- Diverted
- 0%
- Flights flown
- 103
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 104 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.