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

AS9577 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS9577, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and San Antonio - San Antonio International Airport (Airport Code SAT).
This flight data pertains specifically to the flight's details for Saturday, August 15, 2026.

AS9577 On Time performance:
20
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

AS9577 Alaska Airlines to San Antonio

En Route - Delayed
Delay: 42 minutes
Flight Status for Saturday August 15, 2026

Airline information

Alaska Airlines
Alaska Airlines
Equipment: Boeing 737-900 Passenger (Scimitar Winglets)

Departure

Seattle (SEA)
August 15, 2026
Seattle-Tacoma International Airport
Departed at:
01:00 pm
Gate:
-
Scheduled Departure Time: 01:00 pm

Arrival

San Antonio (SAT)
August 15, 2026
San Antonio International Airport
Estimated Arrival Time:
07:16 pm
Terminal:
-
Gate:
-
Scheduled Arrival Time: 06:34 pm
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.

Additional Information

Which is the frequency of flight AS9577?
The flight AS9577 is currently not scheduled at Seattle Airport - SEATAC.

Which is the distance of flight AS9577?
The distance between the two airports is 1774 miles.

Which is the flight time of flight AS9577?
The scheduled flight time gate to gate is: 03:34 hours.
The real flight time gate to gate on average is: 04:35 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: 2026-08-15 14:36:19
Current Time in San Antonio: 2026-08-15 16:36:19

Alternative Flights

The following airline serve the same route between Seattle and San Antonio:
Alaska Airlines - Flight Number: AS494. (On Time performance: 72 - Average Delay: 12 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 19, 2026 to August 04, 2026, we have obtained these figures.
Total number of flights: 5
On Time: 1 ( 20 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 2 ( 40 % )
Major Delay: 2 ( 40 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 76 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from February 21, 2026 to August 04, 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.

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

Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights AS9577

Date
Departure
Arrival
Duration
Aircraft
Status
Tuesday
04 August
09:52 am
Seattle (SEA)
12:02 pm
San Antonio (SAT)
00h 10min
Boeing 737-900
Boeing 737-900
Landed - On-time