Flight Reliability
AS 265 · Alaska Airlines
Seattle → Chicago (SEA–ORD)100% of its flights flew this route. The rest (PDX–MCI) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.0%
- Cancelled
- 4 min early
- Median arrival delay
Based on 200 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 9 AM–12 PM arrived on time 88% of the time, against 82% between 6–9 AM.
Thursdays have been rough.
AS 265 arrived on time 93% of the time on Saturdays and just 73% on Thursdays. That gap is worth planning around.
A bit ahead of the SEA–ORD route.
AS 265 arrived on time 82% of the time, versus 76% across the SEA–ORD route.
The breakdown
- Mon80%(30 flights)
- Tue85%(27 flights)
- Wed82%(28 flights)
- Thu73%(30 flights)
- Fri83%(30 flights)
- Sat93%(27 flights)
- Sun80%(25 flights)
- 6–9 AM82%(180 flights)
- 9 AM–12 PM88%(17 flights)
87%
May
Nov 65% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 65% | 17 |
| December 2025 | 82% | 28 |
| January 2026 | 73% | 30 |
| February 2026 | 93% | 28 |
| March 2026 | 80% | 30 |
| April 2026 | 90% | 29 |
| May 2026 | 87% | 31 |
- Departures on time
- 87%
- Diverted
- 0.5%
- Flights flown
- 197
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 200 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.