Airport Tips & Quick Reference Guide to Seattle–Tacoma Airport - Seatac (SEA)

AS406 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS406, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Dulles - Washington Dulles International Airport (Airport Code IAD).
This flight data pertains specifically to the flight's details for Wednesday, August 19, 2026.

AS406 On Time performance:
79
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

AS406 Alaska Airlines to Dulles

Airline information

Alaska Airlines
Alaska Airlines

Departure

Seattle (SEA)
August 16, 2026
Seattle-Tacoma International Airport

Arrival

Dulles (IAD)
August 16, 2026
Washington Dulles International Airport
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.seattle-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- AA9349 - American Airlines

Additional Information

Which is the frequency of flight AS406?
The flight AS406 is scheduled to flight on daily basis.

Which is the distance of flight AS406?
The distance between the two airports is 2300 miles.

Which is the flight time of flight AS406?
The scheduled flight time gate to gate is: 04:58 hours.
The real flight time gate to gate on average is: 04:39 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Seattle: 2026-08-18 14:38:07
Current Time in Dulles: 2026-08-18 17:38:07

Alternative Flights

The following airlines serves the same route between Seattle and Dulles:

Alaska Airlines
- Flight Number: AS367. (On Time performance: 75 - Average Delay: 11 minutes)
- Flight Number: AS737. (On Time performance: 78 - Average Delay: 4 minutes)

Delta Air Lines
- Flight Number: DL541. (On Time performance: 73 - Average Delay: 13 minutes)

United Airlines
- Flight Number: UA1523. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: UA2131. (On Time performance: 89 - Average Delay: 4 minutes)
- Flight Number: UA2463. (On Time performance: 89 - Average Delay: 4 minutes)
- Flight Number: UA2467. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: UA264. (On Time performance: 87 - Average Delay: 27 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from May 17, 2026 to August 16, 2026, we have obtained these figures.
Total number of flights: 91
On Time: 72 ( 79 % )
Moderate Delay: 9 ( 10 % )
Significant Delay: 7 ( 8 % )
Major Delay: 3 ( 3 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 9 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from April 22, 2026 to August 16, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from August 02, 2025 to July 31, 2026. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.

Last Past Flights AS406

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
17 August
04:49 pm
Seattle (SEA)
12:26 am
Dulles (IAD)
04h 37min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Sunday
16 August
04:09 pm
Seattle (SEA)
11:43 pm
Dulles (IAD)
04h 34min
Boeing 737-900
Boeing 737-900
Landed - On-time
Saturday
15 August
04:14 pm
Seattle (SEA)
12:14 am
Dulles (IAD)
05h 00min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Friday
14 August
04:01 pm
Seattle (SEA)
11:46 pm
Dulles (IAD)
04h 45min
Boeing 737-900
Boeing 737-900
Landed - On-time
Thursday
13 August
04:00 pm
Seattle (SEA)
11:45 pm
Dulles (IAD)
04h 45min
Boeing 737-900
Boeing 737-900
Landed - On-time
Wednesday
12 August
04:03 pm
Seattle (SEA)
12:00 am
Dulles (IAD)
04h 57min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
11 August
04:03 pm
Seattle (SEA)
12:05 am
Dulles (IAD)
05h 02min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
10 August
04:05 pm
Seattle (SEA)
11:43 pm
Dulles (IAD)
04h 38min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
09 August
05:06 pm
Seattle (SEA)
12:54 am
Dulles (IAD)
04h 48min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Saturday
08 August
03:56 pm
Seattle (SEA)
11:26 pm
Dulles (IAD)
04h 30min
Boeing 737-900
Boeing 737-900
Landed - On-time