Flight Reliability
AS 454 · Alaska Airlines
Seattle → Spokane (SEA–GEG)83% of its flights flew this route. The rest (SEA–BUR, FAI–ANC) are included in these numbers.
- 84%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.5%
- Cancelled
- 7 min early
- Median arrival delay
Based on 205 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 454 departing between 3–6 PM arrived on time 100% of the time, versus 80% between 12–3 PM.
Tuesdays have been rough.
AS 454 arrived on time 89% of the time on Saturdays and just 73% on Tuesdays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 454 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 454 arrived on time 86% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon84%(31 flights)
- Tue73%(26 flights)
- Wed89%(26 flights)
- Thu80%(30 flights)
- Fri84%(38 flights)
- Sat89%(27 flights)
- Sun88%(24 flights)
- 6–9 AM92%(24 flights)
- 9 AM–12 PM82%(158 flights)
- 12–3 PM80%(10 flights)
- 3–6 PM100%(10 flights)
Nov 87% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 87% | 23 |
| December 2025 | 71% | 28 |
| January 2026 | 74% | 31 |
| February 2026 | 89% | 28 |
| March 2026 | 77% | 26 |
| April 2026 | 91% | 22 |
| May 2026 | 89% | 28 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 202
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 205 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.