Carrier route record
ASSEA→RDM
Alaska Airlines · Seattle to Redmond
- Flights
- 413
- Period
- September 2025 to August 2026
- Share of route
- 22%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Alaska Airlines.
Alaska on SEA to RDM lands a B, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 413 flights, with a median arrival 7 minutes early.
Set against the rest of the country, Alaska's SEA to RDM record is 4 points better than the US average of 77.3%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.
Key figures
On time
81.3%
Arrivals under 15 minutes late, of 406 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
1.45%
National rate is 1.89%
Whole route
84.9%
Every carrier on SEA to RDM, 1,865 flights
These figures cover 413 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Alaska against every carrier on SEA to RDM
Alaska flew 413 of the 1,865 flights on SEA to RDM, about 22% of it. Its 81.3% on time is 4 points worse than the route as a whole, which runs 84.9%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 85.9% to Alaska at 81.3%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 1,452 | 85.9% | 53 min | 1.72% | A |
| Alaska Airlines (this page) | 413 | 81.3% | 42 min | 1.45% | B |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Alaska runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 413 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm160 flights80.6%
- 2pm–5pm2 flights—
- 5pm–8pm—
- 8pm–5am251 flights81.6%
Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.
The overnight block holds up unusually well at 81.6% on time across 251 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 251 flights scheduled in it.
Across the year
Alaska on SEA to RDM through the year
January is the weak month at 72.2% on time, against 86.7% in April. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. April was the busiest month here, with 60 flights.
Across the week, Saturday is the strongest day at 87.9% on time and Thursday the weakest at 73.2%, a spread of 15 points.
Arrival by arrival
How late Alaska on SEA to RDM runs when it is late
Most of the lateness is short. 40 of the 76 late arrivals were under half an hour behind, and 14 reached an hour or more.
- 15+ min early92 flights22.7%
- Within 15 min238 flights58.6%
- 15–29 min late40 flights9.9%
- 30–59 min late22 flights5.4%
- 1–2 hours late12 flights3.0%
- 2+ hours late2 flights0.5%
Scale runs 0% to 100%.
Share of 406 completed flights by arrival against schedule.
16 of 85 late departures made up the time and arrived on time, 19% of them. Only 7 left on time and still arrived late.
The worst days
Worst days for Alaska on SEA to RDM
The latest arrival of the period was on 30 September 2025, 3 hours 42 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 September 2025 | 3 hours 42 minutes | Carrier |
| 24 August 2026 | 2 hours 4 minutes | Late-arriving aircraft |
| 22 May 2026 | 1 hour 57 minutes | Carrier |
| 18 December 2025 | 1 hour 48 minutes | Late-arriving aircraft |
| 7 September 2025 | 1 hour 46 minutes | Carrier |
Delay causes
Why Alaska runs late on this route
Carrier accounts for 47% of the 3,209 delay minutes carriers reported here, and the remaining four split what is left.
- 47%Carrier
- 41%Late-arriving aircraft
- 9%National Airspace System
- 3%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,209 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 3,209 reported delay minutes.
The largest share of delay minutes, 47%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,510 of the 3,209 delay minutes reported here.
Cancellations sit at 1.45% against a national 1.89%, which is ordinary. Diversions add another 0.24%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 228 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8pm–5am window matters as much as it does.
The return leg runs 83.8% on time across 414 flights, within 3 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 413 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Alaska on SEA to RDM
Put together: treat all of this as provisional. 413 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 406 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.