Flight Reliability
AS 31 · Alaska Airlines
New York → Seattle (JFK–SEA)
58
A Little Dicey
WanderNerd Reliability Score
- 69%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 3.6%
- Cancelled
- 1 min
- Median arrival delay
Based on 363 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
AS 31 departing between 6–9 AM arrived on time 89% of the time, versus 68% between 3–6 PM.
Skip Wednesday if you can.
AS 31 arrived on time 76% of the time on Saturdays. On Wednesdays: 63%.
Lagging the Alaska Airlines network.
AS 31 arrived on time 69% of the time, versus 80% across the Alaska Airlines network.
Keep a backup plan handy.
AS 31 was cancelled 3.6% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon69%(49 flights)
- Tue69%(52 flights)
- Wed63%(51 flights)
- Thu67%(48 flights)
- Fri64%(50 flights)
- Sat76%(49 flights)
- Sun76%(49 flights)
- 6–9 AM89%(18 flights)
- 3–6 PM68%(330 flights)
87%
May
Jun 41% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 41% | 29 |
| July 2025 | 62% | 29 |
| August 2025 | 74% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 89% | 28 |
| November 2025 | 67% | 24 |
| December 2025 | 43% | 30 |
| January 2026 | 77% | 30 |
| February 2026 | 65% | 26 |
| March 2026 | 55% | 31 |
| April 2026 | 80% | 30 |
| May 2026 | 87% | 30 |
- Departures on time
- 77%
- Diverted
- 0.6%
- Flights flown
- 348
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 363 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.