Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

AS1399 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS1399, which currently operates between the airports of Ontario - Ontario International Airport (Airport Code ONT) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Saturday, October 11, 2025.

AS1399 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

AS1399 Alaska Airlines from Ontario

Airline information

Alaska Airlines
Alaska Airlines

Departure

Ontario (ONT)
October 08, 2025
Ontario International Airport

Arrival

Seattle (SEA)
October 08, 2025
Seattle-Tacoma 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:

- HA6287 - Hawaiian Airlines

Additional Information

Which is the frequency of flight AS1399?
The flight AS1399 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.

Which is the distance of flight AS1399?
The distance between the two airports is 957 miles.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

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

Alaska Airlines
- Flight Number: AS1087. (On Time performance: 56 - Average Delay: 35 minutes)
- Flight Number: AS1091. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: AS1111. (On Time performance: 80 - Average Delay: 19 minutes)
- Flight Number: AS1119. (On Time performance: 88 - Average Delay: 5 minutes)

Delta Air Lines
- Flight Number: DL4031. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: DL4042. (On Time performance: 93 - Average Delay: 11 minutes)
- Flight Number: DL4096. (On Time performance: 96 - Average Delay: 5 minutes)

Frontier Airlines
- Flight Number: F93164. (On Time performance: 87 - Average Delay: 8 minutes)

Punctuality and delays

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

Delays analyzed by Weekday: We have gathered available data from last six months, spanning from May 15, 2025 to June 11, 2025. 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 October 27, 2024 to June 11, 2025. 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 AS1399

Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
09 October
07:35 pm
Ontario (ONT)
10:03 pm
Seattle (SEA)
02h 28min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Wednesday
08 October
07:44 pm
Ontario (ONT)
11:34 pm
Seattle (SEA)
03h 50min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Tuesday
07 October
07:23 pm
Ontario (ONT)
09:49 pm
Seattle (SEA)
02h 26min
Boeing 737-800
Boeing 737-800
Landed - On-time
Monday
06 October
07:31 pm
Ontario (ONT)
10:16 pm
Seattle (SEA)
02h 45min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
05 October
07:41 pm
Ontario (ONT)
10:33 pm
Seattle (SEA)
02h 52min
Boeing 737-900
Boeing 737-900
Landed - On-time