ASA39

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

John F Kennedy International Airport (JFK) — New York, United States

Est. departure time

2026-09-17 22:59 UTC (approx.)

Arrival

San Francisco International Airport (SFO) — San Francisco, United States

Distance flown

4488 km

Straight-line distance

4152 km

Approach distance

76 km

Aircraft

Registration

N251AK

Type

Boeing 737-900

Seats

178 total (138 Economy, 24 Premium, 16 First)

Altitude & speed

Max altitude

36,025 ft

Max ground speed

469 kt

Tracked

6h 2m · 4,328 km

Altitude (ft, max 36,025)

Ground speed (kt, max 469)

Altitude (ft, max 36,025)

Ground speed (kt, max 469)

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 23:45 UTC	ASA39	JFK → SFO New York → San Francisco	N929AK	Boeing 737 MAX 9	Completed	4251 km
2026-09-28 23:43 UTC	ASA39	JFK → SFO New York → San Francisco	N277AK	Boeing 737-900	Completed	4273 km
2026-09-28 00:25 UTC	ASA39	JFK → SFO New York → San Francisco	N926AK	Boeing 737 MAX 9	Completed	4238 km
2026-09-26 23:28 UTC	ASA39	JFK → SFO New York → San Francisco	N477AS	Boeing 737-900	Completed	4237 km
2026-09-26 00:28 UTC	ASA39	JFK → SFO New York → San Francisco	N918AK	Boeing 737 MAX 9	Completed	4249 km
2026-09-25 00:13 UTC	ASA39	JFK → SFO New York → San Francisco	N270AK	Boeing 737-900	Completed	4267 km
2026-09-21 23:25 UTC	ASA39	JFK → SFO New York → San Francisco	N251AK	Boeing 737-900	Completed	4273 km
2026-09-20 23:19 UTC	ASA39	JFK → SFO New York → San Francisco	N551AS	Boeing 737-800	Completed	4549 km
2026-09-19 23:04 UTC	ASA39	JFK → SFO New York → San Francisco	N917KA	Boeing 737 MAX 9	Completed	4426 km
2026-09-19 00:00 UTC	ASA39	JFK → SFO New York → San Francisco	N729AL	Boeing 737 MAX 9	Completed	4397 km
2026-09-17 23:16 UTC	ASA39	JFK → SFO New York → San Francisco	N251AK	Boeing 737-900	Completed	4488 km
2026-09-14 22:53 UTC	ASA39	JFK → SFO New York → San Francisco	N272AK	Boeing 737-900	Completed	4457 km
2026-09-13 23:00 UTC	ASA39	JFK → SFO New York → San Francisco	N963AK	Boeing 737 MAX 9	Completed	5022 km
2026-09-12 22:48 UTC	ASA39	JFK → SFO New York → San Francisco	N935AK	Boeing 737 MAX 9	Completed	4456 km
2026-09-11 22:59 UTC	ASA39	JFK → SFO New York → San Francisco	N237AK	Boeing 737-900	Completed	4560 km
2026-09-10 23:31 UTC	ASA39	JFK → SFO New York → San Francisco	N913AK	Boeing 737 MAX 9	Completed	4500 km
2026-09-07 23:00 UTC	ASA39	JFK → SFO New York → San Francisco	N298AK	Boeing 737-900	Completed	4420 km
2026-09-06 22:53 UTC	ASA39	JFK → SFO New York → San Francisco	N723AL	Boeing 737 MAX 9	Completed	4500 km
2026-09-05 23:04 UTC	ASA39	JFK → SFO New York → San Francisco	N266AK	Boeing 737-900	Completed	4419 km
2026-09-04 23:12 UTC	ASA39	JFK → SFO New York → San Francisco	N708AL	Boeing 737 MAX 9	Completed	4304 km
2026-09-03 23:17 UTC	ASA39	JFK → SFO New York → San Francisco	N948AK	Boeing 737 MAX 9	Completed	4565 km
2026-08-31 23:39 UTC	ASA39	JFK → SFO New York → San Francisco	N440AS	Boeing 737-900	Completed	4438 km
2026-08-30 23:48 UTC	ASA39	JFK → SFO New York → San Francisco	N962AK	Boeing 737 MAX 9	Completed	4401 km
2026-08-29 23:11 UTC	ASA39	JFK → SFO New York → San Francisco	N953AK	Boeing 737 MAX 9	Completed	4388 km
2026-08-28 23:00 UTC	ASA39	JFK → SFO New York → San Francisco	N935AK	Boeing 737 MAX 9	Completed	4402 km
2026-08-24 23:00 UTC	ASA39	JFK → SFO New York → San Francisco	N946AK	Boeing 737 MAX 9	Completed	4461 km
2026-08-24 02:00 UTC	ASA39	JFK → SFO New York → San Francisco	N936AK	Boeing 737 MAX 9	Completed	4342 km
2026-08-22 23:18 UTC	ASA39	JFK → SFO New York → San Francisco	N495AS	Boeing 737-900	Completed	6870 km
2026-08-21 23:06 UTC	ASA39	JFK → SFO New York → San Francisco	N287AK	Boeing 737-900	Completed	6520 km
2026-08-21 02:02 UTC	ASA39	JFK → SFO New York → San Francisco	N527AS	Boeing 737-800	Completed	5598 km
2026-08-16 02:42 UTC	ASA39	SLC → ANC Salt Lake City → Anchorage	N948AK	Boeing 737 MAX 9	Completed	5149 km
2026-08-15 03:14 UTC	ASA39	SLC → ANC Salt Lake City → Anchorage	N815AK	Boeing 737 MAX 8	Completed	~8689 km est. (4303 km recorded)