Flight profile · Alaska Airlines

AS543

Dallas–Fort Worth (DFW) to Seattle (SEA) · scheduled 8:00 AM – 10:25 AM

FlyerIntel does not track flights in the air. This page describes how AS543 has historically performed, which is a different and more useful question when you are deciding what to book. For today’s status, check with Alaska Airlines.

How AS543 performs

1,029 operations, 2023-07-01 to 2026-06-30.

On-time arrivals

72.3%

735 of 1,017 completed

Cancellation rate

1.07%

11 cancelled

Median arrival delay

1 min

Average 10.1 min

Severe delays

6.8%

Arrived 60+ minutes late

Delay when late

55 min

Average, when 15+ min late

Departure punctuality

82.6%

Left the gate on time

Source: US DOT Bureau of Transportation Statistics · 1,029 operations between 2023-07-01 to 2026-06-30

Against the rest of the route

	On time	Cancelled	Median delay	Severe	Flights
AS543	72.3%	1.07%	1 min	6.8%	1,029
Alaska Airlines on DFW → SEA	70.5%	1.52%	1 min	7.8%	5,389
All DFW → SEA flights	71.4%	1.75%	-1 min	9.0%	15,128

Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30

By day of week

Does AS543 run worse on particular days?

Monday70.1%

Tuesday73.1%

Wednesday78.2%

Thursday69.0%

Friday77.6%

Saturday65.7%

Sunday72.0%

Wednesday is historically the most reliable day and Saturday the least, a gap of 12.5 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.

Data and methodology

Calculated by FlyerIntel from 1,029 records of AS543 operating DFW → SEA, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.

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DFW → SEA route profile Alaska Airlines DFW airport