Flight Reliability
AS 783 · Alaska Airlines
Atlanta → Portland (ATL–PDX)89% of its flights flew this route. The rest (DEN–SEA) are included in these numbers.
87
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0.6%
- Cancelled
- 7 min early
- Median arrival delay
Based on 320 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 783 departing between 3–6 PM arrived on time 88% of the time, versus 77% between 12–3 PM.
Wednesdays have been rough.
AS 783 arrived on time 90% of the time on Sundays and just 74% on Wednesdays. That gap is worth planning around.
Trending in the right direction.
AS 783 arrived on time 88% of the time over the last three months in the data, compared with 79% in the three months before that.
The breakdown
- Mon89%(47 flights)
- Tue78%(46 flights)
- Wed74%(46 flights)
- Thu82%(45 flights)
- Fri75%(47 flights)
- Sat82%(39 flights)
- Sun90%(48 flights)
- 12–3 PM77%(34 flights)
- 3–6 PM88%(41 flights)
- 6–9 PM81%(243 flights)
90%
May
Jun 72% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 29 |
| July 2025 | 65% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 81% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 71% | 31 |
| February 2026 | 82% | 17 |
| March 2026 | 83% | 29 |
| April 2026 | 92% | 25 |
| May 2026 | 90% | 29 |
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 318
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 320 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.