Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

ASA840

Operated by Alaska Airlines

Live map

Live map filtered to ASA840. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS VFR

Boston Logan International Airport

Boston, US

Local time
13:34 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
230° / 9 kt
Visibility
10 SM
Ceiling
SCT 3,700 ft, BKN 9,000 ft, BKN 14,000 ft
Temp / Dew
28°C / 19°C
Altimeter
29.98 inHg

Obs: 2026-08-28T16:54:00.000Z

Raw METAR / TAF 
METAR KBOS 281654Z 23009KT 10SM SCT037 BKN090 BKN140 28/19 A2998 RMK AO2 SLP151 T02780189

TAF KBOS 281614Z 2816/2918 27006KT P6SM FEW025 FM281800 12005KT P6SM BKN050 PROB30 2818/2821 4SM TSRA OVC040CB FM282300 21004KT P6SM BKN100 FM290300 33007KT P6SM SCT090 FM291500 04008KT P6SM FEW250

Arrival

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
10:34 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
200° / 5 kt
Visibility
10 SM
Ceiling
BKN 2,200 ft, BKN 3,200 ft
Temp / Dew
16°C / 12°C
Altimeter
30.08 inHg

Obs: 2026-08-28T16:53:00.000Z

Raw METAR / TAF 
METAR KSEA 281653Z 20005KT 10SM BKN022 BKN032 16/12 A3008 RMK AO2 SLP190 T01610122 $

TAF KSEA 281727Z 2818/2924 22005KT P6SM BKN025 BKN035 FM282100 26006KT P6SM BKN050 FM290200 32006KT P6SM BKN050 FM290800 19007KT P6SM -SHRA OVC035 FM291100 19006KT P6SM -SHRA BKN025 OVC030 FM291800 21007KT P6SM -SHRA SCT020 OVC030

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A1ECD6 BOS → SEA Jul 26, 18:10 UTCJul 26, 18:25 UTC15m - -
2026-07-25 A1C1A0 BOS → SEA Jul 25, 22:15 UTCJul 25, 23:00 UTC45m - -
2026-07-25 A1C1A0 BOS → SEA Jul 25, 18:05 UTCJul 25, 18:20 UTC15m - -
2026-07-24 A1B422 BOS → SEA Jul 24, 22:15 UTCJul 24, 23:00 UTC45m - -
2026-07-24 A1B422 BOS → SEA Jul 24, 18:00 UTCJul 24, 18:10 UTC10m - -
2026-07-23 A1C557 BOS → SEA Jul 23, 22:10 UTCJul 23, 23:05 UTC55m - -
2026-07-23 A1C557 BOS → SEA Jul 23, 18:05 UTCJul 23, 18:20 UTC15m - -
2026-07-19 A1D07C BOS → SEA Jul 19, 22:15 UTCJul 19, 23:05 UTC50m - -
2026-07-18 A1D7EA BOS → SEA Jul 18, 22:15 UTCJul 18, 23:05 UTC50m - -
2026-07-18 A1D7EA BOS → SEA Jul 18, 18:00 UTCJul 18, 18:10 UTC10m - -
2026-07-17 A1A546 BOS → SEA Jul 17, 22:49 UTCJul 17, 23:39 UTC50m - -
2026-07-17 A1A546 BOS → SEA Jul 17, 18:34 UTCJul 17, 18:50 UTC15m - -
2026-07-16 A1D07C - Jul 16, 22:15 UTCJul 16, 22:59 UTC45m - -
2026-07-16 A1D07C - Jul 16, 18:00 UTCJul 16, 18:15 UTC15m - -
2026-07-12 A1C90E - Jul 12, 22:10 UTCJul 12, 23:00 UTC50m - -
2026-07-12 A1C90E - Jul 12, 17:55 UTCJul 12, 18:10 UTC15m - -
2026-07-11 A1FF69 - Jul 11, 22:25 UTCJul 11, 23:10 UTC45m - -
2026-07-11 A1FF69 - Jul 11, 17:55 UTCJul 11, 18:05 UTC10m - -
2026-07-10 A1D7EA - Jul 10, 22:10 UTCJul 10, 22:55 UTC45m - -
2026-07-09 A1C90E - Jul 9, 22:30 UTCJul 9, 23:25 UTC55m - -
2026-07-09 A1C90E - Jul 9, 18:15 UTCJul 9, 18:25 UTC10m - -
2026-07-05 A1C90E - Jul 5, 22:25 UTCJul 5, 23:20 UTC55m - -
2026-07-05 A1C90E - Jul 5, 18:10 UTCJul 5, 18:30 UTC20m - -
2026-07-04 A1F7FB - Jul 4, 22:05 UTCJul 4, 22:55 UTC50m - -
2026-07-04 A1F7FB - Jul 4, 17:45 UTCJul 4, 17:55 UTC10m - -
2026-07-03 A1B06B - Jul 3, 22:15 UTCJul 3, 23:10 UTC55m - -
2026-07-03 A1B06B - Jul 3, 17:55 UTCJul 3, 18:05 UTC10m - -
2026-07-02 A1C557 - Jul 2, 22:30 UTCJul 2, 23:30 UTC1h 0m - -
2026-07-02 A1C557 - Jul 2, 18:05 UTCJul 2, 18:25 UTC20m - -
2026-06-28 A1D7EA - Jun 28, 22:29 UTCJun 28, 23:20 UTC50m - -

Performance history

Flights tracked
56 showing last 30
Avg arrival delay
-
On-time arrival
-
Aircraft used
11

Monthly activity 3 months

Month Flights tracked
July 2026 29
June 2026 24
April 2026 3

ASA840 frequently asked

Where does flight ASA840 fly?
ASA840 (Alaska Airlines) flies from BOS to SEA. View the full route page.
How long is flight ASA840?
Based on observed flights, ASA840 takes on average 33m from takeoff to landing.
How often does ASA840 fly?
ASA840 has been observed flying several times a week in our tracking data. We've recorded 56 flights under this callsign.
What aircraft operates flight ASA840?
ASA840 has been operated by 11 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track ASA840 live?
Yes. When ASA840 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.