About 1 in 4 AS 535 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (29%); 0.9% were cancelled. The typical flight landed 2 minutes early.
AS 535: SEA → DEN
Scheduled to leave Seattle at 11:44 a.m. local time. Over the past year it arrived on time 71% of the time (217 flights), better than other AS flights on the route at that hour (67%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 36 | 58% |
| Tuesday | 25 | 88% |
| Wednesday | 30 | 73% |
| Thursday | 35 | 66% |
| Friday | 34 | 79% |
| Saturday | 27 | 74% |
| Sunday | 30 | 67% |
Why it was late
All flights SEA → DEN · Connecting off AS 535? Check the risk
AS 535: DEN → SEA
Scheduled to leave Denver at 4:36 p.m. local time. Over the past year it arrived on time 63% of the time (216 flights), worse than other AS flights on the route at that hour (70%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 36 | 58% |
| Tuesday | 25 | 68% |
| Wednesday | 30 | 67% |
| Thursday | 34 | 50% |
| Friday | 34 | 68% |
| Saturday | 27 | 70% |
| Sunday | 30 | 67% |
Why it was late
All flights DEN → SEA · Connecting off AS 535? Check the risk
Questions
How often is AS 535 from SEA to DEN late?
Alaska Airlines 535 from Seattle, WA to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 29% of 217 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.
How often is AS 535 from DEN to SEA late?
Alaska Airlines 535 from Denver, CO to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 37% of 216 scheduled flights between September 2025 and August 2026. 0.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Alaska Airlines for today's flight. Method.