SIA421

SIA · VAJJ → SIN

SIA421 is operated by between Juhu Aerodrome (VAJJ) and Singapore Changi Airport / Changi Air Base (West) (WSSS). The flight is most often flown by a BOEING Boeing 787-10 Dreamliner. Typical block time is 4h 20m. SkyMeter has observed 41 legs of this flight number via ADS-B.

✈
FLIGHTS
41
last 90 days
⏱
AVG DURATION
4h 20m
tracked time
📅
SERVICE PERIOD
04/15/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
7 / 1
city pairs · airframes
⚠
INCIDENT RATE
48.8%
20 flagged

Routes flown

By count · last 90 days

3
VAJJ → WSSS
10
avg 4h 42m · Juhu Aerodrome → Singapore Changi Airport / Changi Air Base (West)
VABB → WSSS
5
avg 4h 43m · Chhatrapati Shivaji → Singapore Changi Airport / Changi Air Base (West)
VABB → WSAG
1
avg 5h 19m · Chhatrapati Shivaji → Sembawang Air Base

Aircraft types

Equipment used on this number

1
B78X BOEING Boeing 787-10 Dreamliner
53

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
20
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of SIA421

30
9V-SCDBOEING Boeing 787-10 Dreamliner
→
06/03/2026
4h 39m
No alerts
Replay Analysis
9V-SCIBOEING Boeing 787-10 Dreamliner
→
06/02/2026
4h 36m
No alerts
Replay Analysis
9V-SCBBOEING Boeing 787-10 Dreamliner
→
06/01/2026
50m
△ Unstable
Replay Analysis
9V-SCBBOEING Boeing 787-10 Dreamliner
→
06/01/2026
1h 13m
No alerts
Replay Analysis
9V-SCBBOEING Boeing 787-10 Dreamliner
→
06/01/2026
4h 45m
△ Unstable
Replay Analysis
9V-SCDBOEING Boeing 787-10 Dreamliner
→
05/31/2026
4h 51m
No alerts
Replay Analysis
9V-SCVBOEING Boeing 787-10 Dreamliner
→
05/29/2026
4h 42m
No alerts
Replay Analysis
9V-SCTBOEING Boeing 787-10 Dreamliner
→
05/28/2026
4h 37m
No alerts
Replay Analysis
9V-SCABOEING Boeing 787-10 Dreamliner
→
05/27/2026
4h 40m
No alerts
Replay Analysis
9V-SCKBOEING Boeing 787-10 Dreamliner
→
05/26/2026
4h 40m
No alerts
Replay Analysis
9V-SCBBOEING Boeing 787-10 Dreamliner
→
05/25/2026
4h 45m
△ Unstable
Replay Analysis
9V-SCFBOEING Boeing 787-10 Dreamliner
→
05/24/2026
5h 18m
No alerts
Replay Analysis
9V-SCVBOEING Boeing 787-10 Dreamliner
→
05/23/2026
52m
△ Unstable
Replay Analysis
9V-SCVBOEING Boeing 787-10 Dreamliner
→
05/23/2026
1h 12m
No alerts
Replay Analysis
9V-SCVBOEING Boeing 787-10 Dreamliner
→
05/23/2026
4h 54m
△ Unstable
Replay Analysis
9V-SCPBOEING Boeing 787-10 Dreamliner
→
05/22/2026
1h 13m
No alerts
Replay Analysis
BOEING Boeing 787-10 Dreamliner
→
05/21/2026
4h 45m
△ Unstable
Replay Analysis
9V-SCUBOEING Boeing 787-10 Dreamliner
→
05/20/2026
4h 41m
△ Unstable
Replay Analysis
9V-SCUBOEING Boeing 787-10 Dreamliner
→
05/18/2026
4h 30m
No alerts
Replay Analysis
BOEING Boeing 787-10 Dreamliner
→
05/17/2026
4h 47m
No alerts
Replay Analysis
9V-SCCBOEING Boeing 787-10 Dreamliner
→
05/16/2026
4h 33m
No alerts
Replay Analysis
9V-SCFBOEING Boeing 787-10 Dreamliner
→
05/15/2026
4h 45m
No alerts
Replay Analysis
9V-SCCBOEING Boeing 787-10 Dreamliner
→
05/14/2026
4h 40m
No alerts
Replay Analysis
9V-SCIBOEING Boeing 787-10 Dreamliner
→
05/13/2026
4h 52m
No alerts
Replay Analysis
9V-SCOBOEING Boeing 787-10 Dreamliner
→
05/11/2026
4h 37m
No alerts
Replay Analysis
9V-SCIBOEING Boeing 787-10 Dreamliner
→
05/10/2026
4h 38m
No alerts
Replay Analysis
9V-SCIBOEING Boeing 787-10 Dreamliner
→
05/04/2026
45m
△ Unstable
Replay Analysis
9V-SCIBOEING Boeing 787-10 Dreamliner
→
05/04/2026
1h 12m
No alerts
Replay Analysis
9V-SCDBOEING Boeing 787-10 Dreamliner
→
05/03/2026
4h 31m
△ Unstable
Replay Analysis
9V-SCLBOEING Boeing 787-10 Dreamliner
→
05/02/2026
4h 33m
△ Unstable
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window