Flight number record

AS 450

Alaska Airlines · Seattle to Columbus

Route: SEA → CMH
Departs: 10:10
Flights: 344
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 450, check with Alaska Airlines.

AS 450 lands a B+, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 45 minutes on average. That is a workable record, not a spotless one. That rests on 344 flights, with a median arrival 4 minutes early.

On time

79.5%

Arrivals under 15 minutes late, of 341 completed flights

Avg delay

44 min

Across delayed arrivals only, not all flights

Cancelled

0.58%

National rate is 1.81%

1 hour+ late

3.8%

National rate is 8.1%

These figures cover 344 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 450 flies

AS 450 flies SEA to CMH without a single fixed slot. Its most common scheduled departure was 10:10, used on 72 of 344 flights, with 10:00 (71 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:1072 flights20.9%
Departs 10:0071 flights20.6%

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 10:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 450 runs 5 points worse at 79.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

AS 450 next to SEA to CMH

Every carrier on SEA to CMH combined arrived on time 77.2% of the time across 464 flights, so AS 450 is 2 points ahead of it. Across its whole network Alaska Airlines managed 79.1%, close to this flight's figure.

AS 450 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 450thin sample	344	79.5%	44 min	0.58%	B+
All Alaska Airlines on SEA–CMH	460	77.0%	41 min	0.43%	B+
All carriers on SEA–CMH	464	77.2%	41 min	0.43%	B+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	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 2025 at 67.4%, a swing of 27 points on roughly 86 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 flights67.4%
Oct–Dec 202591 flights80.2%
Jan–Mar 202670 flights94.0%
Apr–Jun 202691 flights80.2%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AS 450 did best on Tuesday at 90.7% on time and worst on Monday at 71.2%. Each day rests on about 49 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 450 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,098 reported delay minutes.

Carrier
38%
National Airspace System
32%
Late-arriving aircraft
24%
Extreme weather
7%

The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,162 of the 3,098 delay minutes reported here. The split is drawn from 3,098 delay minutes reported on AS 450.

Cancellations are rare at 0.58%, 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 3.8% 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 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 (302 flights, 64.7% 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. 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.

Other routes flown as AS 450
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
CMH to SEAthin sample	302	64.7%	51 min	0.66%	D+

What to do with this

Booking AS 450

For a booking, read AS 450 as 79.5% on time with 0.58% cancelled over 344 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