Flight number record
AS 673
Alaska Airlines · Spokane to San Diego
- Route
- GEG → SAN
- Departs
- 08:15
- Flights
- 304
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 673, check with Alaska Airlines.
AS 673 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 40 minutes. That rests on 304 flights, with a median arrival 10 minutes early.
Set against the rest of the country, AS 673's record is 11 points better than the US average of 77.3%. That gap is worth roughly 108 fewer late arrivals for every thousand flights.
Key figures
On time
88.1%
Arrivals under 15 minutes late, of 302 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
0.66%
National rate is 1.89%
1 hour+ late
1.7%
National rate is 8.3%
These figures cover 304 flights between September 2025 and August 2026. The median arrival is 10 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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Schedule
When AS 673 flies
AS 673 flies GEG to SAN without a single fixed slot. Its most common scheduled departure was 08:15, used on 70 of 304 flights, with 07:00 (69 flights) and 07:19 (35 flights) next.
- Departs 08:1570 flights23.0%
- Departs 07:0069 flights22.7%
- Departs 07:1935 flights11.5%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 08:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 673 runs 4 points better at 88.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AS 673 next to GEG to SAN
Every carrier on GEG to SAN combined arrived on time 84.9% of the time across 442 flights, so AS 673 is 3 points ahead of it. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 673thin sample | 304 | 88.1% | 39 min | 0.66% | A+ |
| All Alaska Airlines on GEG–SANthin sample | 364 | 89.4% | 38 min | 1.10% | A |
| All carriers on GEG–SAN | 442 | 84.9% | 37 min | 0.90% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 673 quarter by quarter
AS 673 did not run the same all year. Its best quarter was Jan–Mar 2026 at 94.1% on time and its weakest Jul–Sep 2026 at 75.4%, a swing of 19 points on roughly 76 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Oct–Dec 202566 flights87.7%
- Jan–Mar 202685 flights94.1%
- Apr–Jun 202691 flights91.2%
- Jul–Sep 202662 flights75.4%
Scale runs 65% to 100%.
By weekday, AS 673 did best on Wednesday at 95.3% on time and worst on Thursday at 76.7%. Each day rests on about 43 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AS 673 runs when it is late
AS 673 often beats the schedule: 118 of 302 completed flights, 39%, arrived 15 minutes or more early. Most of the lateness is short. 21 of the 36 late arrivals were under half an hour behind, and 5 reached an hour or more.
- 15+ min early118 flights39.1%
- Within 15 min148 flights49.0%
- 15–29 min late21 flights7.0%
- 30–59 min late10 flights3.3%
- 1–2 hours late4 flights1.3%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 302 completed flights by arrival against schedule.
7 of 28 late departures made up the time and arrived on time, 25% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for AS 673
The latest arrival of the period was on 1 January 2026, 3 hours behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 January 2026 | 3 hours | Carrier |
| 21 December 2025 | 1 hour 59 minutes | Carrier |
| 2 November 2025 | 1 hour 53 minutes | Carrier |
| 30 July 2026 | 1 hour 6 minutes | National Airspace System |
| 16 February 2026 | 1 hour | Carrier |
Delay causes
Why AS 673 runs late
National Airspace System accounts for 58% of the 1,411 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 42%Carrier
58% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 824 minutes out of 1,411, against a national NAS share of 21%. The split is drawn from 1,411 delay minutes reported on AS 673.
Cancellations are rare at 0.66%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.7% 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.
The 1,027 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
Every one of the 304 flights under AS 673 in the data flew GEG to SAN. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 304 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 AS 673
For a booking, AS 673 has one of the better records a US domestic flight can show: 88.1% on time and 0.66% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- San Diego International (SAN) delay statistics
- Alaska Airlines on-time record
- Every Alaska Airlines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
A flight number here means Alaska Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.