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AS255

SAN → BOS · Boeing 737-900 · Alaska Airlines

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Departure · San Diego (SAN)

Gate 31
Scheduled 02 Oct 20:59 · Departed 02 Oct 20:59
Board status: Departed
Airborne since 02 Oct 21:08 (ADS-B)

Arrival · Boston (BOS)

Terminal B · Gate B4 · Baggage belt 3
Scheduled 05:49 · Estimated 05:22 · early
Board status: Now 5:22 AM
In the air (100% of the route flown)

Board data from bos, san, updated 38 min ago; times local to each airport.

Flight

Status
In progress
Departure
San Diego International Airport (SAN) — San Diego, United States
Scheduled departure
2026-10-03 03:59 UTC
Departed
2026-10-03 04:08 UTC
Arrival
General Edward Lawrence Logan International Airport (BOS) — Boston, United States (scheduled)
Scheduled arrival
2026-10-03 09:49 UTC
Estimated arrival
2026-10-03 09:22 UTC
Progress
100%
Distance flown
4322 km
Straight-line distance
4156 km

Aircraft

Registration
N434AS
Type
Boeing 737-900
Seats
181 total (16 Business, 165 Economy)
CO2 (EMEP est., total)
100.8 t (528 kg/pax Economy, 862 kg/pax Business)

Altitude & speed

Max altitude
35,025 ft
Max ground speed
559 kt
Tracked
5h 28m · 4,322 km
Note
still in progress - the track so far
Altitude (ft, max 35,025)
018,91437,8270m1h 0m2h 0m3h 0m4h 0m5h 0m
Ground speed (kt, max 559)
03026040m1h 0m2h 0m3h 0m4h 0m5h 0m
Altitude (ft, max 35,025)
018,91437,8270m2h 0m4h 0m
Ground speed (kt, max 559)
03026040m2h 0m4h 0m

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

DepartedFlightRouteRegAircraftStatusDistance
2026-10-03 04:08 UTC ASA255 SAN → BOS
San Diego → Boston
 N434AS Boeing 737-900 In progress ~4156 km est.
2026-10-02 04:16 UTC ASA255 SAN → BOS
San Diego → Boston
 N952AK Boeing 737 MAX 9 Completed (landing confirmed by airport data) 4385 km

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