Flight Reliability
AS 3430 · Alaska Airlines
Salt Lake City → Portland (SLC–PDX)86% of its flights flew this route. The rest (SFO–SNA, SNA–SFO) are included in these numbers.
- 90%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0.3%
- Cancelled
- 9 min early
- Median arrival delay
Based on 323 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
AS 3430 departing between 6–9 AM arrived on time 92% of the time, versus 85% between 12–3 PM.
Friday is doing you no favors.
AS 3430 arrived on time 96% of the time on Mondays and just 80% on Fridays. That gap is worth planning around.
Better than the Alaska Airlines network average.
AS 3430 arrived on time 90% of the time, versus 80% across the Alaska Airlines network.
It basically never cancels.
Out of 323 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon96%(46 flights)
- Tue92%(47 flights)
- Wed87%(45 flights)
- Thu91%(45 flights)
- Fri80%(45 flights)
- Sat89%(47 flights)
- Sun94%(47 flights)
- 6–9 AM92%(125 flights)
- 12–3 PM85%(73 flights)
- 3–6 PM90%(124 flights)
Jun 93% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 100% | 31 |
| August 2025 | 100% | 19 |
| October 2025 | 76% | 50 |
| November 2025 | 90% | 30 |
| December 2025 | 84% | 31 |
| January 2026 | 84% | 31 |
| February 2026 | 96% | 28 |
| March 2026 | 94% | 31 |
| April 2026 | 90% | 29 |
| May 2026 | 100% | 12 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 322
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 323 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.