Flight number record

AS 549

Alaska Airlines · Seattle to Dallas-Fort Worth

Route: SEA → DFW
Departs: 12:13
Flights: 277
Period: September 2025 to August 2026

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

AS 549 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land about 45 minutes behind schedule. That rests on 277 flights, with a median arrival 1 minute early.

The national on-time rate over the same period is 77.3%, so AS 549 runs 7 points behind the country as a whole. Across a thousand flights that is about 65 extra late arrivals.

On time

70.8%

Arrivals under 15 minutes late, of 271 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

0.36%

National rate is 1.89%

1 hour+ late

4.8%

National rate is 8.3%

These figures cover 277 flights between September 2025 and August 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.

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Schedule

When AS 549 flies

AS 549 flies SEA to DFW without a single fixed slot. Its most common scheduled departure was 12:13, used on 70 of 277 flights, with 12:05 (35 flights) and 13:35 (33 flights) next.

Departs 12:1370 flights25.3%
Departs 12:0535 flights12.6%
Departs 13:3533 flights11.9%

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 12:13 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AS 549 runs 8 points worse at 70.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

AS 549 next to SEA to DFW

Every carrier on SEA to DFW combined arrived on time 78.0% of the time across 5,228 flights, so AS 549 is 7 points behind it. Alaska flew 1,758 flights on the same city pair under all its flight numbers, including this one, and those ran 80.8% on time. Across its whole network Alaska Airlines managed 79.7%, which this flight trails by 9 points.

AS 549 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 549thin sample	277	70.8%	46 min	0.36%	C+
All Alaska Airlines on SEA–DFW	1,758	80.8%	43 min	0.85%	B+
All carriers on SEA–DFW	5,228	78.0%	75 min	1.66%	B
Alaska Airlines, whole network	309,844	79.7%	52 min	1.20%	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 2026 at 63.8%, a swing of 10 points on roughly 92 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 flights—
Oct–Dec 202581 flights74.1%
Jan–Mar 202620 flights—
Apr–Jun 202687 flights72.6%
Jul–Sep 202659 flights63.8%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, AS 549 did best on Tuesday at 82.1% on time and worst on Friday at 61.5%. Each day rests on about 40 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late AS 549 runs when it is late

AS 549 often beats the schedule: 70 of 271 completed flights, 26%, arrived 15 minutes or more early. The 79 late arrivals split 30 under half an hour, 36 between 30 and 60 minutes, and 13 an hour or more.

15+ min early70 flights25.8%
Within 15 min122 flights45.0%
15–29 min late30 flights11.1%
30–59 min late36 flights13.3%
1–2 hours late10 flights3.7%
2+ hours late3 flights1.1%

Scale runs 0% to 100%.

Share of 271 completed flights by arrival against schedule.

27 of 91 late departures made up the time and arrived on time, 30% of them. In the other direction, 15 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DFW.

The worst days

Worst days for AS 549

The latest arrival of the period was on 16 July 2026, 4 hours 17 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across July, October, April and June, with no single month standing out.

The latest arrivals of AS 549 in the period
Date	Arrived late by	Largest filed cause
16 July 2026	4 hours 17 minutes	Extreme weather
24 October 2025	3 hours 33 minutes	Late-arriving aircraft
23 October 2025	2 hours 58 minutes	National Airspace System
30 April 2026	1 hour 59 minutes	Late-arriving aircraft
12 June 2026	1 hour 59 minutes	Carrier

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 3,597 reported delay minutes.

Carrier
35%
National Airspace System
33%
Late-arriving aircraft
24%
Extreme weather
7%
Security
1%

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,264 of the 3,597 delay minutes reported here. The split is drawn from 3,597 delay minutes reported on AS 549.

Cancellations are rare at 0.36%, 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 4.8% 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 1,660 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. 277 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: 7 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures