Flight Reliability
AS 663 · Alaska Airlines
Portland → Phoenix (PDX–PHX)92% of its flights flew this route. The rest (GEG–PDX) are included in these numbers.
94
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 132 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
AS 663 arrived on time 100% of the time on Wednesdays and just 68% on Saturdays. That gap is worth planning around.
A bit ahead of the PDX–PHX route.
AS 663 arrived on time 86% of the time, versus 81% across the PDX–PHX route.
A bit ahead of the Alaska Airlines network.
AS 663 arrived on time 86% of the time, versus 80% across the Alaska Airlines network.
It basically never cancels.
Out of 132 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon90%(20 flights)
- Tue84%(19 flights)
- Wed100%(17 flights)
- Thu94%(18 flights)
- Fri79%(19 flights)
- Sat68%(19 flights)
- Sun85%(20 flights)
- 9 AM–12 PM85%(100 flights)
- 12–3 PM88%(32 flights)
100%
May
Jun 64% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 64% | 11 |
| November 2025 | 90% | 10 |
| December 2025 | 67% | 15 |
| February 2026 | 88% | 17 |
| March 2026 | 94% | 31 |
| April 2026 | 93% | 30 |
| May 2026 | 100% | 12 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 132
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 132 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.