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 49m. SkyMeter has observed 80 legs of this flight number via ADS-B.

✈
FLIGHTS
80
last 90 days
⏱
AVG DURATION
1h 49m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/17/2026
first → last seen
🗺
ROUTES / TYPES
17 / 4
city pairs · airframes
⚠
INCIDENT RATE
2.5%
2 flagged

Routes flown

By count · last 90 days

10
KSTL → KDEN
37
avg 1h 59m · St Louis Lambert → Denver
KPHX → KTUS
7
avg 31m · Phoenix Sky Harbor → Tucson International Airport / Morris Air National Guard Base
KECP → KSTL
4
avg 1h 40m · Northwest Florida Beaches → St Louis Lambert
KSTL → KSMF
3
avg 3h 48m · St Louis Lambert → Sacramento
KECP → KCPS
1
avg 1h 26m · Northwest Florida Beaches → St Louis Downtown
KSTL → KCOS
1
avg 2h 36m · St Louis Lambert → City of Colorado Springs
KTPF → KBNA
1
avg 2h 9m · Peter O Knight → Nashville
KSTL → KABQ
1
avg 3h 0m · St Louis Lambert → Albuquerque International Sunport
KSTL → KFTG
1
avg 2h 15m · St Louis Lambert → Colorado Air and Space Port
0CD4 → KDEN
1
avg 15m · Kauffman Heliport → Denver

Aircraft types

Equipment used on this number

4
B38M BOEING Boeing 737 MAX 8
39
B738 BOEING Boeing 737-800
37
B737 BOEING Boeing 737-700
31
NAVI NORTH AMERICAN-RYAN North American Navion
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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
N226WNBOEING Boeing 737-700
→
08/17/2026
1h 26m
△ Low approach-stability score
Replay Analysis
N8552ZBOEING Boeing 737-800
→
08/17/2026
1h 38m
No alerts
Replay Analysis
N441WNBOEING Boeing 737-700
→
08/15/2026
1h 4m
No alerts
Replay Analysis
N441WNBOEING Boeing 737-700
→
08/14/2026
2h 19m
No alerts
Replay Analysis
N441WNBOEING Boeing 737-700
→
08/14/2026
1h 14m
No alerts
Replay Analysis
N7847ABOEING Boeing 737-700
→
08/13/2026
1h 27m
No alerts
Replay Analysis
N7742BBOEING Boeing 737-700
→
08/11/2026
49m
No alerts
Replay Analysis
N7742BBOEING Boeing 737-700
→
08/10/2026
41m
No alerts
Replay Analysis
N7742BBOEING Boeing 737-700
→
08/10/2026
1h 30m
No alerts
Replay Analysis
N8746QBOEING Boeing 737 MAX 8
→
08/10/2026
2h 8m
No alerts
Replay Analysis
N467WNBOEING Boeing 737-700
→
08/08/2026
21m
No alerts
Replay Analysis
N467WNBOEING Boeing 737-700
→
08/07/2026
1h 3m
No alerts
Replay Analysis
N467WNBOEING Boeing 737-700
→
08/07/2026
1h 25m
No alerts
Replay Analysis
N8553WBOEING Boeing 737-800
→
08/03/2026
2h 24m
No alerts
Replay Analysis
N8876QBOEING Boeing 737 MAX 8
→
08/02/2026
1h 50m
No alerts
Replay Analysis
N9003BNORTH AMERICAN-RYAN North American Navion
→
07/31/2026
2h 5m
No alerts
Replay Analysis
N8918QBOEING Boeing 737 MAX 8
→
07/30/2026
1h 59m
No alerts
Replay Analysis
N8558ZBOEING Boeing 737-800
→
07/30/2026
1h 52m
No alerts
Replay Analysis
N8991SBOEING Boeing 737 MAX 8
→
07/29/2026
2h 25m
No alerts
Replay Analysis
N8991SBOEING Boeing 737 MAX 8
→
07/28/2026
26m
No alerts
Replay Analysis
N8991SBOEING Boeing 737 MAX 8
→
07/28/2026
2h 52m
No alerts
Replay Analysis
N8936QBOEING Boeing 737 MAX 8
→
07/27/2026
1h 51m
No alerts
Replay Analysis
N8658ABOEING Boeing 737-800
→
07/26/2026
1h 46m
No alerts
Replay Analysis
N556WNBOEING Boeing 737-700
→
07/26/2026
1h 49m
No alerts
Replay Analysis
N556WNBOEING Boeing 737-700
→
07/25/2026
14m
No alerts
Replay Analysis
N556WNBOEING Boeing 737-700
→
07/25/2026
2h 3m
No alerts
Replay Analysis
N8539VBOEING Boeing 737-800
→
07/24/2026
1h 53m
No alerts
Replay Analysis
N8539VBOEING Boeing 737-800
→
07/24/2026
40m
No alerts
Replay Analysis
N8912QBOEING Boeing 737 MAX 8
→
07/23/2026
1h 58m
No alerts
Replay Analysis
N8679ABOEING Boeing 737-800
→
07/23/2026
3h 43m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window