Flight Reliability
AS 679 · Alaska Airlines
Denver → Portland (DEN–PDX)99% of its flights flew this route. The rest (SEA–BUR) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0%
- Cancelled
- 1 min early
- Median arrival delay
Based on 102 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AS 679 departing between 6–9 PM arrived on time 82% of the time, versus 60% between 3–6 PM.
Thursdays have been rough.
AS 679 arrived on time 91% of the time on Tuesdays and just 63% on Thursdays. That gap is worth planning around.
It basically never cancels.
Out of 102 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon79%(19 flights)
- Tue91%(11 flights)
- Wed—(9 flights)
- Thu63%(16 flights)
- Fri79%(19 flights)
- Sat—(8 flights)
- Sun85%(20 flights)
- 3–6 PM60%(20 flights)
- 6–9 PM82%(82 flights)
65%
May
Nov 78% → May 65% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 78% | 18 |
| December 2025 | 60% | 10 |
| March 2026 | 93% | 14 |
| April 2026 | 92% | 26 |
| May 2026 | 65% | 26 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 102
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 102 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.