Carrier route record
ASGEG→SEA
Alaska Airlines · Spokane to Seattle
- Flights
- 1,820
- Period
- July 2025 to June 2026
- Share of route
- 35%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Alaska Airlines.
Alaska on GEG to SEA lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 1,820 flights, with a median arrival 3 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Alaska on GEG to SEA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.6%
Arrivals under 15 minutes late, of 1,800 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.81%
Whole route
85.9%
Every carrier on GEG to SEA, 5,183 flights
These figures cover 1,820 flights between July 2025 and June 2026. The median arrival is 3 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.
Carrier by carrier
Alaska against every carrier on GEG to SEA
Alaska flew 1,820 of the 5,183 flights on GEG to SEA, about 35% of it. Its 80.6% on time is 5 points worse than the route as a whole, which runs 85.9%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 93.8% to Alaska at 80.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 343 | 93.8% | 145 min | 1.46% | A |
| SkyWest Airlines | 3,020 | 88.2% | 60 min | 0.99% | A+ |
| Alaska Airlines (this page) | 1,820 | 80.6% | 43 min | 1.10% | B |
Departure window
When Alaska runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am646 flights90.0%
- 8am–11am245 flights75.5%
- 11am–2pm367 flights78.6%
- 2pm–5pm84 flights86.6%
- 5pm–8pm475 flights71.2%
- 8pm–5am3 flights—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 90.0% of the time, against 71.2% for the evening window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 646 flights scheduled in it.
Across the year
Alaska on GEG to SEA through the year
July is the worst month at 65.5% on time, 26 points below February, the best at 91.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 192 flights.
Across the week, Sunday is the strongest day at 84.3% on time and Thursday the weakest at 74.1%. 10 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Alaska runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 15,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 47%Late-arriving aircraft
- 26%National Airspace System
- 24%Carrier
- 2%Extreme weather
- 0%Security
47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 15,000 reported delay minutes here, that single category outweighs weather by 20 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 15,042 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 90.0% on time here.
Cancellations sit at 1.10% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.8% land an hour or more behind schedule, against 8.1% 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 224 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 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 75.6% on time across 1,820 flights, 5 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
The sample behind these figures is 1,820 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Alaska on GEG to SEA
Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 91.9% on time and July 65.5%, a swing of 26 points. If the dates move at all, move them out of July before you think about anything else. 1,800 completed flights over 12 months sit behind that.
Related
Where to go next
- GEG to SEA, every carrier
- Alaska on SEA to GEG, the return leg
- Delta Air Lines on GEG to SEA93.8%
- SkyWest Airlines on GEG to SEA88.2%
- Alaska Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.