Flight Reliability
AS 3355 · Alaska Airlines
Portland → Salt Lake City (PDX–SLC)82% of its flights flew this route. The rest (SMF–SEA, BUR–SFO) are included in these numbers.
90
Nerd Approved
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0%
- Cancelled
- 1 min early
- Median arrival delay
Based on 313 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
AS 3355 departing between 9 AM–12 PM arrived on time 95% of the time, versus 75% between 6–9 PM.
Skip Saturday if you can.
AS 3355 arrived on time 90% of the time on Wednesdays. On Saturdays: 77%.
A bit behind the PDX–SLC route.
AS 3355 arrived on time 82% of the time, versus 89% across the PDX–SLC route.
It basically never cancels.
Out of 313 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon84%(50 flights)
- Tue85%(40 flights)
- Wed90%(38 flights)
- Thu78%(49 flights)
- Fri81%(47 flights)
- Sat77%(39 flights)
- Sun82%(50 flights)
- 6–9 AM84%(208 flights)
- 9 AM–12 PM95%(21 flights)
- 6–9 PM75%(84 flights)
92%
May
Jun 83% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 63% | 30 |
| October 2025 | 90% | 30 |
| November 2025 | 83% | 30 |
| December 2025 | 77% | 31 |
| January 2026 | 90% | 20 |
| February 2026 | 75% | 16 |
| March 2026 | 74% | 23 |
| April 2026 | 90% | 29 |
| May 2026 | 92% | 12 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 313
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 313 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.