N639SY is operated by SKYWEST AIRLINES INC between Professor Urbano Ernesto Stumpf Airport (SBSJ) and Luis Munoz Marin International Airport (TJSJ). Typical block time is 6h 25m. SkyMeter has observed 2 legs of this flight number via ADS-B.

✈
FLIGHTS
2
last 90 days
⏱
AVG DURATION
6h 25m
tracked time
📅
SERVICE PERIOD
06/27/2026 → 06/28/2026
first → last seen
🗺
ROUTES / TYPES
2 / 0
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

2
SBSJ → TJSJ
1
avg 8h 33m · Professor Urbano Ernesto Stumpf → Luis Munoz Marin
TJSJ → KXNA
1
avg 4h 17m · Luis Munoz Marin → Northwest Arkansas

Aircraft types

Equipment used on this number

0

No aircraft type data.

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
0
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 2 operations of N639SY

2
N639SY
→
06/28/2026
4h 17m
No alerts
Replay Analysis
N639SY
→
06/27/2026
8h 32m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window