Flight number record

AS 494

Alaska Airlines · Seattle to San Antonio

Route: SEA → SAT
Departs: 09:38
Flights: 340
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s AS 494, check with Alaska Airlines.

AS 494 lands a B+, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 340 flights, with a median arrival 5 minutes early.

On time

76.3%

Arrivals under 15 minutes late, of 337 completed flights

Avg delay

41 min

Across delayed arrivals only, not all flights

Cancelled

0.88%

National rate is 1.89%

1 hour+ late

3.3%

National rate is 8.3%

These figures cover 340 flights between September 2025 and August 2026. The median arrival is 5 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 494 flies

AS 494 flies SEA to SAT without a single fixed slot. Its most common scheduled departure was 09:38, used on 70 of 340 flights, with 10:53 (35 flights) and 11:40 (35 flights) next.

Departs 09:3870 flights20.6%
Departs 10:5335 flights10.3%
Departs 11:4035 flights10.3%

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 09:38 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 494 runs 8 points worse at 76.3%. 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 494 next to SEA to SAT

Every carrier on SEA to SAT combined arrived on time 75.8% of the time across 549 flights, so AS 494 is about level with it. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 3 points.

AS 494 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 494thin sample	340	76.3%	41 min	0.88%	B+
All Alaska Airlines on SEA–SAT	549	75.8%	43 min	0.73%	B+
All carriers on SEA–SAT	549	75.8%	43 min	0.73%	B+
Alaska Airlines, whole network	309,844	79.7%	52 min	1.20%	B

Across the year

AS 494 quarter by quarter

AS 494 did not run the same all year. Its best quarter was Apr–Jun 2026 at 81.3% on time and its weakest Jul–Sep 2026 at 64.5%, a swing of 17 points on roughly 85 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.

Jul–Sep 202517 flights—
Oct–Dec 202583 flights76.2%
Jan–Mar 202687 flights78.2%
Apr–Jun 202691 flights81.3%
Jul–Sep 202662 flights64.5%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, AS 494 did best on Tuesday at 84.8% on time and worst on Saturday at 68.2%. Each day rests on about 49 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late AS 494 runs when it is late

The 80 late arrivals split 35 under half an hour, 34 between 30 and 60 minutes, and 11 an hour or more.

15+ min early84 flights24.9%
Within 15 min173 flights51.3%
15–29 min late35 flights10.4%
30–59 min late34 flights10.1%
1–2 hours late8 flights2.4%
2+ hours late3 flights0.9%

Scale runs 0% to 100%.

Share of 337 completed flights by arrival against schedule.

27 of 97 late departures made up the time and arrived on time, 28% of them. 10 flights left on time and still arrived late.

The worst days

Worst days for AS 494

The latest arrival of the period was on 30 January 2026, 2 hours 35 minutes 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.

The latest arrivals of AS 494 in the period
Date	Arrived late by	Largest filed cause
30 January 2026	2 hours 35 minutes	Carrier
13 March 2026	2 hours 7 minutes	Late-arriving aircraft
29 November 2025	2 hours 3 minutes	Carrier
25 December 2025	1 hour 58 minutes	Carrier
24 October 2025	1 hour 47 minutes	Carrier

Delay causes

Why AS 494 runs late

Carrier accounts for 47% of the 3,291 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
47%
Late-arriving aircraft
37%
National Airspace System
16%
Extreme weather
1%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,291 reported delay minutes here, that single category outweighs weather by 37 to one. The split is drawn from 3,291 delay minutes reported on AS 494.

Cancellations are rare at 0.88%, 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 3.3% 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 1,774 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

AS 494 is not only a SEA to SAT flight. It also flew SAT to SEA (281 flights, 72.7% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 340 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.

Other routes flown as AS 494
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
SAT to SEAthin sample	281	72.7%	45 min	1.07%	C

What to do with this

Booking AS 494

For a booking, read AS 494 as 76.3% on time with 0.88% cancelled over 340 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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 22 October 2026; recomputed monthly. How this data is collected.

Key figures