Flight number record
AS 450
Alaska Airlines · Seattle to Columbus
- Route
- SEA → CMH
- Departs
- 09:41
- Flights
- 344
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AS 450, check with Alaska Airlines.
AS 450 lands a B+, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 344 flights, with a median arrival 7 minutes early.
Key figures
On time
81.2%
Arrivals under 15 minutes late, of 341 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
0.58%
National rate is 1.89%
1 hour+ late
4.1%
National rate is 8.3%
These figures cover 344 flights between September 2025 and August 2026. The median arrival is 7 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 450 flies
AS 450 flies SEA to CMH without a single fixed slot. Its most common scheduled departure was 09:41, used on 60 of 344 flights, with 10:00 (59 flights) next.
- Departs 09:4160 flights17.4%
- Departs 10:0059 flights17.2%
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 09:41 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and AS 450 runs 3 points worse at 81.2%. 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 450 next to SEA to CMH
Every carrier on SEA to CMH combined arrived on time 82.3% of the time across 469 flights, so AS 450 is about level with it. Across its whole network Alaska Airlines managed 79.7%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AS 450thin sample | 344 | 81.2% | 49 min | 0.58% | B+ |
| All Alaska Airlines on SEA–CMH | 465 | 82.2% | 45 min | 0.43% | B+ |
| All carriers on SEA–CMH | 469 | 82.3% | 45 min | 0.43% | B+ |
| Alaska Airlines, whole network | 309,844 | 79.7% | 52 min | 1.20% | B |
Across the year
AS 450 quarter by quarter
AS 450 did not run the same all year. Its best quarter was Jan–Mar 2026 at 94.0% on time and its weakest Jul–Sep 2026 at 72.6%, a swing of 21 points on roughly 69 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 202530 flights76.7%
- Oct–Dec 202591 flights80.2%
- Jan–Mar 202670 flights94.0%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202662 flights72.6%
Scale runs 65% to 100%.
By weekday, AS 450 ranged from 75.5% on Monday to 86.5% on Wednesday. With about 49 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.
Arrival by arrival
How late AS 450 runs when it is late
AS 450 often beats the schedule: 116 of 341 completed flights, 34%, arrived 15 minutes or more early. The 64 late arrivals split 23 under half an hour, 27 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early116 flights34.0%
- Within 15 min161 flights47.2%
- 15–29 min late23 flights6.7%
- 30–59 min late27 flights7.9%
- 1–2 hours late9 flights2.6%
- 2+ hours late5 flights1.5%
Scale runs 0% to 100%.
Share of 341 completed flights by arrival against schedule.
A late pushback is often recovered here: of 79 departures that left 15 minutes late or more, 32 still arrived on time. 17 flights left on time and still arrived late.
The worst days
Worst days for AS 450
The latest arrival of the period was on 13 March 2026, 3 hours 50 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 March 2026 | 3 hours 50 minutes | Extreme weather |
| 4 August 2026 | 2 hours 36 minutes | Carrier |
| 22 May 2026 | 2 hours 16 minutes | Late-arriving aircraft |
| 8 September 2025 | 2 hours 10 minutes | Carrier |
| 7 December 2025 | 2 hours 6 minutes | Carrier |
Delay causes
Why AS 450 runs late
Carrier accounts for 45% of the 3,102 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Carrier
- 26%National Airspace System
- 22%Late-arriving aircraft
- 7%Extreme weather
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,394 of the 3,102 delay minutes reported here. The split is drawn from 3,102 delay minutes reported on AS 450.
Cancellations are rare at 0.58%, 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 4.1% 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 2,016 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 450 is not only a SEA to CMH flight. It also flew CMH to SEA (304 flights, 66.2% 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. 344 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 |
|---|---|---|---|---|---|
| CMH to SEAthin sample | 304 | 66.2% | 51 min | 0.66% | C+ |
What to do with this
Booking AS 450
For a booking, read AS 450 as 81.2% on time with 0.58% cancelled over 344 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Seattle-Tacoma International (SEA) delay statistics
- John Glenn Columbus International (CMH) 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.