Flight number record

AS 405

Alaska Airlines · Oklahoma City to Seattle

Route: OKC → SEA
Departs: 14:51
Flights: 352
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 405, check with Alaska Airlines.

AS 405 lands a B+, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 40 minutes on average. That is a workable record, not a spotless one. That rests on 352 flights, with a median arrival 4 minutes early.

Set against the rest of the country, AS 405's record is 6 points better than the US average of 77.6%. That gap is worth roughly 58 fewer late arrivals for every thousand flights.

On time

83.4%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

40 min

Across delayed arrivals only, not all flights

Cancelled

0.57%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 352 flights between July 2025 and June 2026. The median arrival is 4 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.

Schedule

When AS 405 flies

AS 405 flies OKC to SEA without a single fixed slot. Its most common scheduled departure was 14:51, used on 72 of 352 flights, with 14:55 (54 flights) and 14:44 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:5172 flights20.5%
Departs 14:5554 flights15.3%
Departs 14:4450 flights14.2%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 14:51 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and AS 405 runs 11 points better at 83.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 405 next to OKC to SEA

Every carrier on OKC to SEA combined arrived on time 84.8% of the time across 411 flights, so AS 405 is about level with it. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 4 points.

AS 405 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 405thin sample	352	83.4%	40 min	0.57%	B+
All Alaska Airlines on OKC–SEA	411	84.8%	41 min	0.49%	B+
All carriers on OKC–SEA	411	84.8%	41 min	0.49%	B+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 405 quarter by quarter

AS 405 did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.1% on time and its weakest Jul–Sep 2025 at 73.6%, a swing of 18 points on roughly 88 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 202592 flights73.6%
Oct–Dec 202591 flights80.2%
Jan–Mar 202679 flights89.7%
Apr–Jun 202690 flights91.1%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, AS 405 ranged from 77.1% on Tuesday to 88.5% on Monday. With about 50 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why AS 405 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 43% of the 2,309 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.

Late-arriving aircraft
43%
National Airspace System
26%
Carrier
24%
Extreme weather
6%

43% 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 2,309 reported delay minutes here, that single category outweighs weather by 7 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 2,309 delay minutes reported on AS 405.

Cancellations are rare at 0.57%, below the national 1.81% 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 2.3% 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 1,519 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 405 is not only a OKC to SEA flight. It also flew SEA to OKC (352 flights, 90.9% 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. 352 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 405
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
SEA to OKCthin sample	352	90.9%	41 min	0.28%	A+

What to do with this

Booking AS 405

For a booking, read AS 405 as 83.4% on time with 0.57% cancelled over 352 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures