Flight Reliability
AS 2339 · Alaska Airlines
Boise → Ontario (BOI–ONT)90% of its flights flew this route. The rest (PHX–SAN, PDX–STS) are included in these numbers.
87
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.8%
- Cancelled
- 7 min early
- Median arrival delay
Based on 127 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 2339 departing between 12–3 PM arrived on time 96% of the time, versus 70% between 9 AM–12 PM.
Friday is doing you no favors.
AS 2339 arrived on time 93% of the time on Tuesdays and just 70% on Fridays. That gap is worth planning around.
The breakdown
- Mon83%(18 flights)
- Tue93%(14 flights)
- Wed79%(14 flights)
- Thu78%(18 flights)
- Fri70%(20 flights)
- Sat91%(22 flights)
- Sun85%(20 flights)
- 9 AM–12 PM70%(10 flights)
- 12–3 PM96%(23 flights)
- 3–6 PM83%(58 flights)
- 6–9 PM77%(35 flights)
100%
May
Jan 68% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 68% | 25 |
| February 2026 | 96% | 23 |
| March 2026 | 83% | 24 |
| April 2026 | 79% | 29 |
| May 2026 | 100% | 15 |
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 126
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 127 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.