Flight number record
AS 405
Alaska Airlines · Seattle to Oklahoma City
- Route
- SEA → OKC
- Departs
- 08:18
- Flights
- 352
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 405, check with Alaska Airlines.
AS 405 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 35 minutes. That rests on 352 flights, with a median arrival 12 minutes early.
Set against the rest of the country, AS 405's record is 15 points better than the US average of 77.3%. That gap is worth roughly 150 fewer late arrivals for every thousand flights.
Key figures
On time
92.3%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
36 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
1.1%
National rate is 8.3%
These figures cover 352 flights between September 2025 and August 2026. The median arrival is 12 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 405 flies
AS 405 flies SEA to OKC without a single fixed slot. Its most common scheduled departure was 08:18, used on 103 of 352 flights.
- Departs 08:18103 flights29.3%
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 08:18 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 405 runs 8 points better at 92.3%. 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 405 next to SEA to OKC
Every carrier on SEA to OKC combined arrived on time 86.3% of the time across 424 flights, so AS 405 is 6 points ahead of it. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 405thin sample | 352 | 92.3% | 36 min | 0.28% | A+ |
| All Alaska Airlines on SEA–OKC | 424 | 86.3% | 34 min | 0.24% | A+ |
| All carriers on SEA–OKC | 424 | 86.3% | 34 min | 0.24% | A+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 405 quarter by quarter
Quarter by quarter AS 405 held fairly steady: 90.0% in Jul–Sep 2025, 89.0% in Oct–Dec 2025, 93.6% in Jan–Mar 2026, 95.6% in Apr–Jun 2026 and 91.9% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202591 flights89.0%
- Jan–Mar 202679 flights93.6%
- Apr–Jun 202690 flights95.6%
- Jul–Sep 202662 flights91.9%
Scale runs 80% to 100%.
By weekday, AS 405 ranged from 88.0% on Wednesday to 95.7% on Saturday. With about 50 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late AS 405 runs when it is late
AS 405 often beats the schedule: 151 of 351 completed flights, 43%, arrived 15 minutes or more early. Most of the lateness is short. 15 of the 27 late arrivals were under half an hour behind, and 4 reached an hour or more.
- 15+ min early151 flights43.0%
- Within 15 min173 flights49.3%
- 15–29 min late15 flights4.3%
- 30–59 min late8 flights2.3%
- 1–2 hours late3 flights0.9%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 351 completed flights by arrival against schedule.
A late pushback is often recovered here: of 31 departures that left 15 minutes late or more, 15 still arrived on time. 11 flights left on time and still arrived late.
The worst days
Worst days for AS 405
The latest arrival of the period was on 1 December 2025, 2 hours 8 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.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 December 2025 | 2 hours 8 minutes | Carrier |
| 23 June 2026 | 1 hour 49 minutes | Carrier |
| 16 January 2026 | 1 hour 34 minutes | Carrier |
| 13 March 2026 | 1 hour 8 minutes | National Airspace System |
| 17 June 2026 | 40 minutes | Carrier |
Delay causes
Why AS 405 runs late
Carrier accounts for 65% of the 965 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 33%National Airspace System
- 2%Late-arriving aircraft
33% 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 322 minutes out of 965, against a national NAS share of 21%. The split is drawn from 965 delay minutes reported on AS 405.
Cancellations are rare at 0.28%, 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 1.1% 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 1,519 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 SEA to OKC flight. It also flew OKC to SEA (351 flights, 86.3% 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OKC to SEAthin sample | 351 | 86.3% | 37 min | 0.28% | A+ |
What to do with this
Booking AS 405
For a booking, AS 405 has one of the better records a US domestic flight can show: 92.3% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Seattle-Tacoma International (SEA) 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
- Worst months to fly in the US, ranked by the data
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.