Flight Reliability
AS 30 · Alaska Airlines
San Francisco → New York (SFO–JFK)
74
Usually Fine
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 2.6%
- Cancelled
- 4 min early
- Median arrival delay
Based on 268 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
AS 30 departing between 6–9 AM arrived on time 82% of the time, versus 74% between 9 AM–12 PM.
Wednesdays have been rough.
AS 30 arrived on time 92% of the time on Tuesdays and just 65% on Wednesdays. That gap is worth planning around.
The breakdown
- Mon72%(39 flights)
- Tue92%(39 flights)
- Wed65%(37 flights)
- Thu81%(37 flights)
- Fri87%(38 flights)
- Sat86%(35 flights)
- Sun68%(34 flights)
- 6–9 AM82%(130 flights)
- 9 AM–12 PM74%(65 flights)
- 9 PM–12 AM77%(64 flights)
83%
May
Jun 72% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 29 |
| July 2025 | 83% | 30 |
| August 2025 | 90% | 31 |
| September 2025 | 63% | 30 |
| October 2025 | 89% | 27 |
| November 2025 | 86% | 28 |
| December 2025 | 68% | 28 |
| February 2026 | 86% | 14 |
| March 2026 | 77% | 17 |
| May 2026 | 83% | 12 |
- Departures on time
- 84%
- Diverted
- 0.7%
- Flights flown
- 259
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 268 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.