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

AS304 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS304, which currently operates between the airports of Detroit - Detroit Metropolitan Wayne County Airport (Airport Code DTW) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Monday, April 21, 2025.

AS304 On Time performance:
86
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

AS304 Alaska Airlines from Detroit

We only provide flight information for yesterday, today and tomorrow. This flight is not scheduled for this interval of time.

Airline information

Alaska Airlines
Alaska Airlines

Departure

Detroit (DTW)
April 21, 2025
Detroit Metropolitan Wayne County Airport

Arrival

Seattle (SEA)
April 21, 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:

- AA7531 - American Airlines

- HA4777 - Hawaiian Airlines

- JL6367 - JAL

- TN2357 - Air Tahiti Nui

Additional Information

Which is the frequency of flight AS304?
The flight AS304 is scheduled to flight on daily basis.

Which is the distance of flight AS304?
The distance between the two airports is 1922 miles.

Which is the flight time of flight AS304?
The scheduled flight time gate to gate is: 04:59 hours.
The real flight time gate to gate on average is: 05:00 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 Detroit: 2025-04-30 01:09:43
Current Time in Seattle: 2025-04-29 22:09:43

Alternative Flights

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

Alaska Airlines
- Flight Number: AS313. (On Time performance: 58 - Average Delay: 19 minutes)
- Flight Number: AS381.

Delta Air Lines
- Flight Number: DL565. (On Time performance: 77 - Average Delay: 9 minutes)
- Flight Number: DL728. (On Time performance: 83 - Average Delay: 18 minutes)
- Flight Number: DL734. (On Time performance: 93 - Average Delay: 4 minutes)
- Flight Number: DL944. (On Time performance: 77 - 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 January 26, 2025 to April 21, 2025, we have obtained these figures.
Total number of flights: 81
On Time: 70 ( 86 % )
Moderate Delay: 5 ( 6 % )
Significant Delay: 3 ( 4 % )
Major Delay: 3 ( 4 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 7 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from October 26, 2024 to April 21, 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 April 02, 2024 to March 31, 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.

Last Past Flights AS304

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
21 April
05:07 pm
Detroit (DTW)
07:00 pm
Seattle (SEA)
04h 53min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
20 April
05:05 pm
Detroit (DTW)
06:41 pm
Seattle (SEA)
04h 36min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
19 April
06:15 pm
Detroit (DTW)
07:58 pm
Seattle (SEA)
04h 43min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Friday
18 April
05:05 pm
Detroit (DTW)
06:50 pm
Seattle (SEA)
04h 45min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
17 April
05:01 pm
Detroit (DTW)
07:11 pm
Seattle (SEA)
05h 10min
Boeing 737-800
Boeing 737-800
Landed - On-time
Wednesday
16 April
04:58 pm
Detroit (DTW)
07:00 pm
Seattle (SEA)
05h 02min
Boeing 737-800
Boeing 737-800
Landed - On-time
Tuesday
15 April
05:12 pm
Detroit (DTW)
07:44 pm
Seattle (SEA)
05h 32min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Monday
14 April
05:03 pm
Detroit (DTW)
07:01 pm
Seattle (SEA)
04h 58min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
13 April
05:06 pm
Detroit (DTW)
07:08 pm
Seattle (SEA)
05h 02min
Boeing 737-800
Boeing 737-800
Landed - On-time
Saturday
12 April
05:00 pm
Detroit (DTW)
07:08 pm
Seattle (SEA)
05h 08min
Boeing 737-800
Boeing 737-800
Landed - On-time