Flight Reliability
AS 324 · Alaska Airlines
Portland → Chicago (PDX–ORD)
80
Pretty Reliable
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0.6%
- Cancelled
- 4 min
- Median arrival delay
Based on 354 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 324 arrived on time 77% of the time on Tuesdays. On Sundays: 67%.
A bit behind the PDX–ORD route.
AS 324 arrived on time 74% of the time, versus 78% across the PDX–ORD route.
A bit behind the Alaska Airlines network.
AS 324 arrived on time 74% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 324 arrived on time 85% of the time over the last three months in the data, compared with 77% in the three months before that.
The breakdown
- Mon75%(52 flights)
- Tue77%(52 flights)
- Wed74%(46 flights)
- Thu75%(52 flights)
- Fri73%(52 flights)
- Sat76%(46 flights)
- Sun67%(52 flights)
90%
May
Jun 80% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 30 |
| July 2025 | 61% | 31 |
| August 2025 | 61% | 31 |
| September 2025 | 67% | 30 |
| October 2025 | 61% | 31 |
| November 2025 | 75% | 28 |
| December 2025 | 68% | 31 |
| January 2026 | 74% | 23 |
| February 2026 | 88% | 25 |
| March 2026 | 90% | 31 |
| April 2026 | 73% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 91%
- Diverted
- 0%
- Flights flown
- 352
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 354 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.