Apparatus

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flight_takeoff Flight

121JS

Live map

Live map filtered to 121JS. Shown when the flight is currently airborne.

Route airports View route page →

Departure

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
21:43 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
140° / 9 kt
Visibility
10 SM
Ceiling
FEW 5,000 ft, SCT 7,500 ft, BKN 11,000 ft, BKN 22,000 ft
Temp / Dew
27°C / 20°C
Altimeter
29.87 inHg

Obs: 2026-08-02T00:52:00.000Z

Raw METAR / TAF 
METAR KIAD 020052Z 14009KT 10SM FEW050 SCT075 BKN110 BKN220 OVC250 27/20 A2987 RMK AO2 SLP109 T02720200 $

TAF KIAD 012322Z 0200/0306 16010KT P6SM SCT060 BKN250 FM020100 15008KT P6SM SCT050 BKN200 FM021400 16009G17KT P6SM SCT015 BKN025 FM021600 15009G17KT P6SM VCSH SCT015 BKN025 FM022000 15009G17KT P6SM -SHRA SCT015 BKN020 PROB30 0220/0224 4SM TSRA BKN015CB FM030200 15005KT 6SM -SHRA SCT007 BKN010

flight Live Traffic

flight_takeoff 236 Departures
flight_land 221 Arrivals

Arrival

BOI KBOI VFR

Boise Air Terminal/Gowen Field

Boise, US

Local time
19:43 MDT
Timezone
America/Boise
Type
Large Airport
Elevation
2,871 ft
Coordinates
43.5644, -116.2230

cloud Weather

Wind
330° / 12 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
37°C / 4°C
Altimeter
29.87 inHg

Obs: 2026-08-02T00:53:00.000Z

Raw METAR / TAF 
METAR KBOI 020053Z 33012KT 10SM CLR 37/04 A2987 RMK AO2 SLP076 T03720039 $

TAF KBOI 012334Z 0200/0224 33012G17KT 6SM FU SCT025 FM020400 29013G23KT P6SM SCT250 FM020900 30010KT 6SM FU FEW025 FM021800 31013G22KT 6SM FU FEW025

flight Live Traffic

flight_takeoff 25 Departures
flight_land 28 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-23 A05842 IAD → BOI Jul 23, 22:50 UTCJul 24, 03:35 UTC4h 45m - -
2026-07-22 A05842 - Jul 22, 23:55 UTCJul 23, 03:45 UTC3h 50m - -
2026-07-15 A05842 - Jul 15, 18:50 UTCJul 15, 22:30 UTC3h 40m - -
2026-07-12 A05842 BOI → MSY Jul 12, 17:10 UTCJul 12, 20:50 UTC3h 40m - -
2026-07-10 A05842 - Jul 10, 23:50 UTCJul 11, 00:25 UTC35m - -
2026-07-10 A05842 - Jul 10, 14:20 UTCJul 10, 15:15 UTC55m - -
2026-07-08 A05842 - Jul 8, 22:40 UTCJul 9, 00:50 UTC2h 10m - -
2026-07-08 A05842 - Jul 8, 17:45 UTCJul 8, 18:05 UTC20m - -
2026-07-08 A05842 - Jul 8, 13:20 UTCJul 8, 14:30 UTC1h 10m - -
2026-06-19 A05842 - Jun 19, 23:25 UTCJun 20, 00:54 UTC1h 30m - -
2026-06-19 A05842 - Jun 19, 21:14 UTCJun 19, 22:49 UTC1h 35m - -
2026-06-11 A05842 - Jun 11, 19:10 UTCJun 11, 23:05 UTC3h 55m - -
2026-06-10 A05842 - Jun 10, 17:10 UTCJun 10, 20:20 UTC3h 10m - -
2026-06-09 A05842 - Jun 9, 22:10 UTCJun 9, 22:45 UTC35m - -
2026-06-09 A05842 - Jun 9, 13:35 UTCJun 9, 14:10 UTC35m - -
2026-06-04 A05842 - Jun 4, 23:25 UTCJun 5, 00:50 UTC1h 25m - -
2026-06-01 A05842 - Jun 1, 12:55 UTCJun 1, 14:30 UTC1h 35m - -
2026-05-29 A05842 - May 29, 19:55 UTCMay 29, 21:05 UTC1h 10m - -
2026-05-29 A05842 - May 29, 17:20 UTCMay 29, 18:40 UTC1h 20m - -
2026-05-21 A05842 - May 21, 19:35 UTCMay 22, 00:25 UTC4h 50m - -
2026-05-18 A05842 - May 18, 17:10 UTCMay 18, 21:15 UTC4h 4m - -
2026-05-15 A05842 - May 15, 20:15 UTCMay 15, 20:35 UTC20m - -
2026-05-15 A05842 - May 15, 19:30 UTCMay 15, 19:40 UTC10m - -
2026-05-15 A05842 - May 15, 13:30 UTCMay 15, 13:40 UTC10m - -
2026-05-14 A05842 - May 14, 13:01 UTCMay 14, 15:25 UTC2h 25m - -
2026-05-13 A05842 - May 13, 16:55 UTCMay 13, 19:05 UTC2h 10m - -
2026-05-11 A05842 - May 11, 18:30 UTCMay 11, 20:10 UTC1h 40m - -
2026-05-11 A05842 - May 11, 16:50 UTCMay 11, 17:50 UTC1h 1m - -
2026-05-11 A05842 - May 11, 12:35 UTCMay 11, 14:15 UTC1h 40m - -
2026-05-05 A05842 - May 5, 20:01 UTCMay 5, 21:40 UTC1h 40m - -

Performance history

Flights tracked
38 showing last 30
Avg arrival delay
-
On-time arrival
-
Aircraft used
1

Monthly activity 4 months

Month Flights tracked
July 2026 9
June 2026 8
May 2026 18
April 2026 3

121JS frequently asked

Where does flight 121JS fly?
121JS flies from IAD to BOI. View the full route page.
How long is flight 121JS?
Based on observed flights, 121JS takes on average 1h 56m from takeoff to landing.
How often does 121JS fly?
121JS has been observed flying several times a week in our tracking data. We've recorded 38 flights under this callsign.
Can I track 121JS live?
Yes. When 121JS 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.