SWA3912 is operated by SOUTHWEST AIRLINES CO between St Louis Lambert International Airport (KSTL) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 31m. SkyMeter has observed 74 legs of this flight number via ADS-B.

✈
FLIGHTS
74
last 90 days
⏱
AVG DURATION
1h 31m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
14 / 3
city pairs · airframes
⚠
INCIDENT RATE
1.4%
1 flagged

Routes flown

By count · last 90 days

9
KSTL → KDEN
27
avg 1h 58m · St Louis Lambert → Denver
KPHX → KTUS
20
avg 34m · Phoenix Sky Harbor → Tucson International Airport / Morris Air National Guard Base
KSTL → KSMF
2
avg 3h 51m · St Louis Lambert → Sacramento
KSTL → KCOS
1
avg 2h 36m · St Louis Lambert → City of Colorado Springs
0CD4 → KDEN
1
avg 15m · Kauffman Heliport → Denver
KCOS → KDEN
1
avg 1h 20m · City of Colorado Springs → Denver
KCHD → KTUS
1
avg 34m · Chandler → Tucson International Airport / Morris Air National Guard Base
KSTL → KFTG
1
avg 2h 15m · St Louis Lambert → Colorado Air and Space Port
KSTL → KABQ
1
avg 3h 0m · St Louis Lambert → Albuquerque International Sunport

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
35
B738 BOEING Boeing 737-800
30
B737 BOEING Boeing 737-700
27

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 SWA3912

30
N8639BBOEING Boeing 737-800
→
07/19/2026
2h 11m
No alerts
Replay Analysis
N919WNBOEING Boeing 737-700
→
07/18/2026
1h 31m
No alerts
Replay Analysis
N919WNBOEING Boeing 737-700
→
07/18/2026
26m
No alerts
Replay Analysis
N8848QBOEING Boeing 737 MAX 8
→
07/17/2026
1h 52m
No alerts
Replay Analysis
N8999QBOEING Boeing 737 MAX 8
→
07/16/2026
1h 52m
No alerts
Replay Analysis
N8547VBOEING Boeing 737-800
→
07/15/2026
1h 50m
No alerts
Replay Analysis
N8941QBOEING Boeing 737 MAX 8
→
07/14/2026
1h 52m
No alerts
Replay Analysis
N8822QBOEING Boeing 737 MAX 8
→
07/13/2026
2h 2m
No alerts
Replay Analysis
N8326FBOEING Boeing 737-800
→
07/12/2026
1h 52m
No alerts
Replay Analysis
N473WNBOEING Boeing 737-700
→
07/11/2026
1h 51m
No alerts
Replay Analysis
N8872QBOEING Boeing 737 MAX 8
→
07/11/2026
1h 23m
No alerts
Replay Analysis
N8872QBOEING Boeing 737 MAX 8
→
07/11/2026
48m
No alerts
Replay Analysis
N8872QBOEING Boeing 737 MAX 8
→
07/10/2026
2h 11m
No alerts
Replay Analysis
N8872QBOEING Boeing 737 MAX 8
→
07/10/2026
3h 0m
No alerts
Replay Analysis
N8754SBOEING Boeing 737 MAX 8
→
07/10/2026
1h 43m
No alerts
Replay Analysis
N8754SBOEING Boeing 737 MAX 8
→
07/09/2026
30m
No alerts
Replay Analysis
N8754SBOEING Boeing 737 MAX 8
→
07/09/2026
2h 14m
No alerts
Replay Analysis
N8676ABOEING Boeing 737-800
→
07/09/2026
3h 22m
No alerts
Replay Analysis
N8676ABOEING Boeing 737-800
→
07/08/2026
31m
No alerts
Replay Analysis
N8676ABOEING Boeing 737-800
→
07/08/2026
3h 54m
No alerts
Replay Analysis
N8551QBOEING Boeing 737-800
→
07/08/2026
1h 1m
No alerts
Replay Analysis
N8551QBOEING Boeing 737-800
→
07/07/2026
2h 45m
No alerts
Replay Analysis
N8551QBOEING Boeing 737-800
→
07/07/2026
3h 47m
No alerts
Replay Analysis
N8882QBOEING Boeing 737 MAX 8
→
07/06/2026
1h 51m
No alerts
Replay Analysis
N8547VBOEING Boeing 737-800
→
07/05/2026
1h 52m
No alerts
Replay Analysis
N7835ABOEING Boeing 737-700
→
07/04/2026
1h 18m
No alerts
Replay Analysis
N8528QBOEING Boeing 737-800
→
07/03/2026
1h 57m
No alerts
Replay Analysis
N8894QBOEING Boeing 737 MAX 8
→
07/03/2026
2h 14m
No alerts
Replay Analysis
N9010TBOEING Boeing 737 MAX 8
→
07/01/2026
2h 2m
No alerts
Replay Analysis
N8654BBOEING Boeing 737-800
→
07/01/2026
1h 20m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window