Alaska Airlines AS421 Flight Status
According to Trip.com real-time data, the AS421 flight operated by Alaska Airlines on Sep 20, 2026 is scheduled to fly from Seattle (SEA) to San Jose del Cabo (SJD). The flight is expected to depart at 10:55 AM and land at 2:43 PM .
Sat, Sep 19
Sun, Sep 20
Mon, Sep 21
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En route
Your flight has departed Seattle and is expected to arrive in San Jose del Cabo at 3:59 PM.
4h 29m
Check-in Counter
ZONE 6,ZONE 7
Boarding Gate
N7
Arrival Gate
16
Baggage
2
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Scheduled
Your flight will depart on time.
4h 29m
Check-in Counter
ZONE 6,ZONE 7
Boarding Gate
N14
Arrival Gate
7B
Baggage
6
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Scheduled
Your flight will depart on time.
4h 29m
Check-in Counter
ZONE 6,ZONE 7
Boarding Gate
N15
Arrival Gate
UNPL
Baggage
6
Information provided by VariFlight For real-time updates, please check airport displays or contact your airline. You can also explore more flights from Seattle to San Jose del Cabo or track other flights with our flight status tracker.
AS421 Aircraft Details
According to Trip.com real-time data, the AS421 flight flying from Seattle to San Jose del Cabo on 9/20/2026 is operated by the aircraft model Boeing 737-900. This aircraft has been in service for 4y, 10m. The aircraft is equipped with 154 seats.
Boeing 737-900
Punctuality (Departure)
47%
Punctuality (Arrival)
90%
Late on average
1 minute
Age
4y, 10m
Seats
154
Flight Distance
--
Economy
First
In-Flight Services
None
Inflight entertainment is available
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
--
Legroom
43 cm
Seat width
100°
Reclining Angle
3-3
Seat layout example
In-Flight Services
Meal included
Inflight entertainment is available
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
104 cm
More legroom than on 50% of flights
53 cm
Seat width
120°
Reclining Angle
2-2
Seat layout example
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Flight History for AS421
Trip.com historical records show that the last AS421 flight departed on Sat, Sep 19 from SEA at approximately 12:11 PM. This flight is expected to arrrive in SJD at 3:59 PM.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Sep 13 | Seattle (SEA) | San Jose del Cabo (SJD) | 739 | 11:14 AM | 3:05 PM | Arrived |
| Mon, Sep 14 | Seattle (SEA) | San Jose del Cabo (SJD) | B38M | 11:24 AM | 3:13 PM | Arrived |
| Thu, Sep 17 | Seattle (SEA) | San Jose del Cabo (SJD) | B39M | 11:39 AM | 3:27 PM | Arrived |
| Fri, Sep 18 | Seattle (SEA) | San Jose del Cabo (SJD) | B39M | 11:32 AM | 3:05 PM | Arrived |
| Sat, Sep 19 | Seattle (SEA) | San Jose del Cabo (SJD) | B39M | 12:11 PM | 3:59 PM | En route |
| Sun, Sep 20 | Seattle (SEA) | San Jose del Cabo (SJD) | B39M | 10:55 AM | 2:43 PM | Scheduled |
| Mon, Sep 21 | Seattle (SEA) | San Jose del Cabo (SJD) | B39M | 10:55 AM | 3:24 PM | Scheduled |
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AS421 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of AS421 is 47% (Late on average 37 minutes), and the on-time arrival rate is 90% (Late on average 1 minute).
On-Time Departures
Punctuality
47%
Late on average 37 minutes
Early
0%
On time
47%
30 mins late
40%
60 mins late
10%
90 mins late
3%
Canceled
0%
On-Time Arrivals
Punctuality
90%
Late on average 1 minute
Early
53%
On time
37%
30 mins late
7%
60 mins late
0%
90 mins late
3%
Canceled
0%
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Frequently Asked Questions
What is the current status of flight as421?
Flight as421 has not departed yet and is currently on schedule. Scheduled departure 10:55 AM, arrival 3:24 PM (updated Sep 20, 2026).Is flight as421 on time today?
Flight as421 has not departed yet and is currently on schedule. Scheduled departure is 10:55 AM, with arrival at 3:24 PM. Recheck gate and timing before you head to the airport.Has flight as421 departed yet? What is the departure time?
Flight as421 is scheduled to depart at 10:55 AM. The latest actual or estimated departure time is 10:55 AM, and the current status is Scheduled (updated Sep 20, 2026).When is flight as421 scheduled to arrive?
Flight as421 is scheduled to arrive at 3:24 PM. The latest estimated or actual arrival time is 2:43 PM. Status is Scheduled as of Sep 20, 2026.What is the baggage carousel number for flight as421?
After arrival, baggage for flight as421 is expected at carousel 6 in terminal T2. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.What route does flight as421 fly?
Flight as421 is operated by Alaska Airlines from Seattle (SEA) to San Jose del Cabo (SJD). Typical flight time is about 4 hours29 minutes; operating days may include Sunday.How can I check real-time status for flight as421?
Track flight as421 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.If flight as421 is delayed or canceled, what should I do?
If as421 is delayed or canceled, first confirm the latest status here (Scheduled, updated Sep 20, 2026). Contact Alaska Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.Has flight as421 departed from Seattle?
Flight as421 has not departed from Seattle (SEA) yet and is currently on schedule for 10:55 AM.What is the seat configuration for flight as421?
Flight as421 usually flies a Boeing 737-900 with seat layout 3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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Arrival Info: San Jose del Cabo Weather & Current Time
Partly clear with thunder and rain
|
26°C - 34°C
Weather forecast for your arrival day
- hour time difference
Time on arrival: Seattle 14:43| San Jose del Cabo 14:43
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