SWA4123 is operated by SOUTHWEST AIRLINES CO between San Antonio International Airport (KSAT) and Phoenix Sky Harbor International Airport (KPHX). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 49m. SkyMeter has observed 76 legs of this flight number via ADS-B.

✈
FLIGHTS
76
last 90 days
⏱
AVG DURATION
1h 49m
tracked time
📅
SERVICE PERIOD
05/31/2025 → 08/17/2026
first → last seen
🗺
ROUTES / TYPES
10 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

5
KSAT → KPHX
43
avg 2h 15m · San Antonio → Phoenix Sky Harbor
KLAS → KFAT
6
avg 1h 27m · McCarran → Fresno Yosemite
KSAN → KSJC
4
avg 1h 21m · San Diego → Norman Y. Mineta San Jose
KLAS → KPHX
1
avg 1h 0m · McCarran → Phoenix Sky Harbor
KSAT → KLAS
1
avg 3h 8m · San Antonio → McCarran

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
50
B738 BOEING Boeing 737-800
17
B737 BOEING Boeing 737-700
9

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 30 operations of SWA4123

30
N475WNBOEING Boeing 737-700
→
08/17/2026
1h 42m
No alerts
Replay Analysis
N435WNBOEING Boeing 737-700
→
08/14/2026
2h 21m
No alerts
Replay Analysis
N200WNBOEING Boeing 737-700
→
08/13/2026
1h 21m
No alerts
Replay Analysis
N937WNBOEING Boeing 737-700
→
08/10/2026
56m
No alerts
Replay Analysis
N937WNBOEING Boeing 737-700
→
08/10/2026
25m
No alerts
Replay Analysis
N455WNBOEING Boeing 737-700
→
08/07/2026
1h 2m
No alerts
Replay Analysis
N455WNBOEING Boeing 737-700
→
08/07/2026
20m
No alerts
Replay Analysis
N7734HBOEING Boeing 737-700
→
08/06/2026
1h 22m
No alerts
Replay Analysis
N903WNBOEING Boeing 737-700
→
08/06/2026
1h 9m
No alerts
Replay Analysis
N8565ZBOEING Boeing 737-800
→
08/03/2026
11m
No alerts
Replay Analysis
N8565ZBOEING Boeing 737-800
→
08/03/2026
1h 59m
No alerts
Replay Analysis
N8859QBOEING Boeing 737 MAX 8
→
08/01/2026
1h 55m
No alerts
Replay Analysis
N8952QBOEING Boeing 737 MAX 8
→
07/31/2026
1h 54m
No alerts
Replay Analysis
N8860SBOEING Boeing 737 MAX 8
→
07/30/2026
2h 19m
No alerts
Replay Analysis
N8794QBOEING Boeing 737 MAX 8
→
07/29/2026
2h 26m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/28/2026
6m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/28/2026
1h 0m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/28/2026
43m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/28/2026
44m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/28/2026
3h 7m
No alerts
Replay Analysis
N8841LBOEING Boeing 737 MAX 8
→
07/27/2026
2h 5m
No alerts
Replay Analysis
N9006LBOEING Boeing 737 MAX 8
→
07/25/2026
2h 29m
No alerts
Replay Analysis
N8937QBOEING Boeing 737 MAX 8
→
07/24/2026
2h 26m
No alerts
Replay Analysis
N8826QBOEING Boeing 737 MAX 8
→
07/23/2026
2h 27m
No alerts
Replay Analysis
N8748QBOEING Boeing 737 MAX 8
→
07/22/2026
2h 29m
No alerts
Replay Analysis
N8947QBOEING Boeing 737 MAX 8
→
07/21/2026
2h 47m
No alerts
Replay Analysis
N8906KBOEING Boeing 737 MAX 8
→
07/20/2026
2h 32m
No alerts
Replay Analysis
N8926QBOEING Boeing 737 MAX 8
→
07/18/2026
2h 6m
No alerts
Replay Analysis
N8817LBOEING Boeing 737 MAX 8
→
07/17/2026
2h 41m
No alerts
Replay Analysis
N8872QBOEING Boeing 737 MAX 8
→
07/16/2026
2h 17m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window