Flight Reliability
AS 367 · Alaska Airlines
Seattle → Washington (SEA–IAD)96% of its flights flew this route. The rest (DFW–SEA, GEG–SEA) are included in these numbers.
- 84%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0.4%
- Cancelled
- 6 min early
- Median arrival delay
Based on 285 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 367 departing between 3–6 PM arrived on time 91% of the time, versus 83% between 9 PM–12 AM.
Sunday scaries are real for this one.
AS 367 arrived on time 89% of the time on Mondays and just 72% on Sundays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 367 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.
Ticking up lately.
AS 367 arrived on time 90% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon89%(47 flights)
- Tue84%(32 flights)
- Wed86%(36 flights)
- Thu82%(45 flights)
- Fri89%(45 flights)
- Sat83%(30 flights)
- Sun72%(47 flights)
- 12–3 PM—(1 flights)
- 3–6 PM91%(11 flights)
- 9 PM–12 AM83%(270 flights)
Jun 71% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 71% | 28 |
| July 2025 | 67% | 30 |
| August 2025 | 87% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 85% | 20 |
| November 2025 | 90% | 29 |
| December 2025 | 85% | 20 |
| February 2026 | 80% | 10 |
| March 2026 | 92% | 24 |
| April 2026 | 85% | 27 |
| May 2026 | 93% | 27 |
- Departures on time
- 77%
- Diverted
- 0.7%
- Flights flown
- 282
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 285 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.