ASA421

For travellers

Departure · Seattle (SEA)

Gate N13

Scheduled 01 Oct 10:57 · Estimated 01 Oct 11:07 · +10 min

Board status: Now 11:07 AM

Airborne since 01 Oct 11:14 (ADS-B)

Board data from sea, updated 1247 min ago; times local to each airport.

Flight

Status

Incomplete (signal lost)

Departure

Seattle Tacoma International Airport (SEA) — Seattle, United States

Scheduled departure

2026-10-01 17:57 UTC

Departed

2026-10-01 18:14 UTC

Arrival

Los Cabos International Airport (SJD) — San José del Cabo, Mexico (scheduled)

Also flies as

AS421

Distance flown

2533 km

Straight-line distance

2925 km

Aircraft

Registration

N733AL

Type

Boeing 737 MAX 9

Altitude & speed

Max altitude

35,025 ft

Max ground speed

514 kt

Tracked

3h 2m · 2,526 km

Altitude (ft, max 35,025)

Ground speed (kt, max 514)

Altitude (ft, max 35,025)

Ground speed (kt, max 514)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

Alaska Airlines (ASA)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-01 18:14 UTC	ASA421	SEA → SJD Seattle → San José del Cabo	N733AL	Boeing 737 MAX 9	Incomplete (signal lost)	2533 km
2026-09-28 18:19 UTC	ASA421	SEA → MUG Seattle → Mulege	N983AK	Boeing 737 MAX 9	Incomplete (signal lost)	2530 km
2026-09-27 19:26 UTC	ASA421	SEA → MUG Seattle → Mulege	N709AL	Boeing 737 MAX 9	Incomplete (signal lost)	2140 km
2026-09-26 18:14 UTC	ASA421	SEA → MUG Seattle → Mulege	N973AK	Boeing 737 MAX 9	Completed	2547 km
2026-09-25 18:47 UTC	ASA421	SEA → MUG Seattle → Mulege	N493AS	Boeing 737-900	Incomplete (signal lost)	2497 km
2026-09-24 18:01 UTC	ASA421	SEA → MUG Seattle → Mulege	N935AK	Boeing 737 MAX 9	Incomplete (signal lost)	2219 km
2026-09-21 18:36 UTC	ASA421	SEA → MUG Seattle → Mulege	N267AK	Boeing 737-900	Incomplete (signal lost)	2560 km
2026-09-20 18:03 UTC	ASA421	SEA → MUG Seattle → Mulege	N931AK	Boeing 737 MAX 9	Incomplete (signal lost)	2517 km
2026-09-19 18:50 UTC	ASA421	SEA → MUG Seattle → Mulege	N938AK	Boeing 737 MAX 9	Incomplete (signal lost)	3002 km
2026-09-18 18:21 UTC	ASA421	SEA → MUG Seattle → Mulege	N932AK	Boeing 737 MAX 9	Incomplete (signal lost)	2193 km
2026-09-17 18:31 UTC	ASA421	SEA → MUG Seattle → Mulege	N705AL	Boeing 737 MAX 9	Incomplete (signal lost)	2701 km
2026-09-14 18:10 UTC	ASA421	SEA → MUG Seattle → Mulege	N806AK	Boeing 737 MAX 8	Incomplete (signal lost)	2785 km
2026-09-13 18:13 UTC	ASA421	SEA → MUG Seattle → Mulege	N453AS	Boeing 737-900	Incomplete (signal lost)	2620 km
2026-09-12 18:03 UTC	ASA421	SEA → MUG Seattle → Mulege	N238AK	Boeing 737-900	Incomplete (signal lost)	2685 km
2026-09-11 18:00 UTC	ASA421	SEA → MUG Seattle → Mulege	N929AK	Boeing 737 MAX 9	Incomplete (signal lost)	2491 km
2026-09-10 18:35 UTC	ASA421	SEA → MUG Seattle → Mulege	N282AK	Boeing 737-900	Incomplete (signal lost)	2736 km
2026-09-07 17:22 UTC	ASA421	SEA → MUG Seattle → Mulege	N274AK	Boeing 737-900	Incomplete (signal lost)	2594 km
2026-09-06 17:23 UTC	ASA421	SEA → MUG Seattle → Mulege	N508AS	Boeing 737-800	Incomplete (signal lost)	3177 km
2026-09-05 17:41 UTC	ASA421	SEA → MUG Seattle → Mulege	N971AK	Boeing 737 MAX 9	Incomplete (signal lost)	2592 km
2026-09-04 17:18 UTC	ASA421	SEA → MUG Seattle → Mulege	N548AS	Boeing 737-800	Incomplete (signal lost)	2445 km
2026-09-03 17:31 UTC	ASA421	SEA → MUG Seattle → Mulege	N274AK	Boeing 737-900	Incomplete (signal lost)	2942 km
2026-08-31 17:43 UTC	ASA421	SEA → MUG Seattle → Mulege	N593AS	Boeing 737-800	Completed	2641 km
2026-08-30 17:27 UTC	ASA421	SEA → MUG Seattle → Mulege	N801AK	Boeing 737 MAX 8	Completed	2656 km
2026-08-29 17:16 UTC	ASA421	SEA → MUG Seattle → Mulege	N552AS	Boeing 737-800	Completed	2189 km
2026-08-28 17:46 UTC	ASA421	SEA → MUG Seattle → Mulege	N549AS	Boeing 737-800	Completed	2385 km
2026-08-27 17:22 UTC	ASA421	SEA → MUG Seattle → Mulege	N731AL	Boeing 737 MAX 9	Completed	3339 km
2026-08-24 17:42 UTC	ASA421	SEA → MUG Seattle → Mulege	N579AS	Boeing 737-800	Completed	2433 km
2026-08-22 17:18 UTC	ASA421	SEA → MUG Seattle → Mulege	N920AK	Boeing 737 MAX 9	Completed	3892 km
2026-08-21 17:32 UTC	ASA421	SEA → MUG Seattle → Mulege	N284AK	Boeing 737-900	Completed	4051 km
2026-08-20 17:33 UTC	ASA421	SEA → ? Seattle → ?	N481AS	Boeing 737-900	Completed	4468 km
2026-08-18 18:01 UTC	ASA421	SEA → MUG Seattle → Mulege	N517AS	Boeing 737-800	Completed	3969 km
2026-08-15 18:17 UTC	ASA421	SEA → ? Seattle → ?	N932AK	Boeing 737 MAX 9	Completed	2913 km
2026-08-14 18:05 UTC	ASA421	SEA → MUG Seattle → Mulege	N293AK	Boeing 737-900	Completed	~4994 km est. (3505 km recorded)