Flight number record

AS 549

Alaska Airlines · Seattle to Dallas-Fort Worth

Route: SEA → DFW
Departs: 13:40
Flights: 273
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 549, check with Alaska Airlines.

AS 549 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is roughly 45 minutes behind schedule. Build slack into anything you connect to. That rests on 273 flights, with a median arrival 1 minute late.

The national on-time rate over the same period is 77.6%, so AS 549 runs 10 points behind the country as a whole. Across a thousand flights that is about 102 extra late arrivals.

On time

67.4%

Arrivals under 15 minutes late, of 267 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

0.37%

National rate is 1.81%

1 hour+ late

6.4%

National rate is 8.1%

These figures cover 273 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Schedule

When AS 549 flies

AS 549 flies SEA to DFW without a single fixed slot. Its most common scheduled departure was 13:40, used on 69 of 273 flights, with 13:35 (45 flights) and 12:05 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:4069 flights25.3%
Departs 13:3545 flights16.5%
Departs 12:0535 flights12.8%

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 13:40 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and AS 549 runs 11 points worse at 67.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

AS 549 next to SEA to DFW

Every carrier on SEA to DFW combined arrived on time 77.6% of the time across 5,233 flights, so AS 549 is 10 points behind it. Alaska flew 1,755 flights on the same city pair under all its flight numbers, including this one, and those ran 78.9% on time. Across its whole network Alaska Airlines managed 79.1%, which this flight trails by 12 points.

AS 549 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 549thin sample	273	67.4%	46 min	0.37%	C+
All Alaska Airlines on SEA–DFW	1,755	78.9%	44 min	1.03%	B
All carriers on SEA–DFW	5,233	77.6%	79 min	2.04%	B
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 549 quarter by quarter

AS 549 did not run the same all year. Its best quarter was Oct–Dec 2025 at 74.1% on time and its weakest Jul–Sep 2025 at 56.1%, a swing of 18 points on roughly 91 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 202585 flights56.1%
Oct–Dec 202581 flights74.1%
Jan–Mar 202620 flights—
Apr–Jun 202687 flights72.6%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, AS 549 did best on Wednesday at 77.5% on time and worst on Thursday at 55.0%. Each day rests on about 39 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why AS 549 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 4,034 reported delay minutes.

National Airspace System
39%
Late-arriving aircraft
30%
Carrier
29%
Security
1%

39% 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 1,588 minutes out of 4,034, against a national NAS share of 21%. The split is drawn from 4,034 delay minutes reported on AS 549.

Cancellations are rare at 0.37%, 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

6.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 45 minutes, which a normal layover absorbs.

At 1,660 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.

The same number turns up on two other city pairs in the data, including PDX to SJC (29) and DFW to SEA (18), but none flew often enough under AS 549 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SEA to DFW only.

One caution: this is a thin sample. 273 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.

What to do with this

Booking AS 549

For a booking, AS 549 is one of the weaker ways to fly SEA to DFW: 10 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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