SWA4128 is operated by SOUTHWEST AIRLINES CO between Phoenix Sky Harbor International Airport (KPHX) and Chicago Midway International Airport (KMDW). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 53m. SkyMeter has observed 84 legs of this flight number via ADS-B.

✈
FLIGHTS
84
last 90 days
⏱
AVG DURATION
1h 53m
tracked time
📅
SERVICE PERIOD
04/16/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
17 / 3
city pairs · airframes
⚠
INCIDENT RATE
9.5%
8 flagged

Routes flown

By count · last 90 days

10
KPHX → KMDW
24
avg 3h 2m · Phoenix Sky Harbor → Chicago Midway
KSLC → KLGB
6
avg 1h 50m · Salt Lake City → Long Beach Airport (Daugherty Field)
KMDW → KCLT
6
avg 1h 29m · Chicago Midway → Charlotte Douglas
KDEN → KSLC
5
avg 1h 20m · Denver → Salt Lake City
KMDW → KDCA
5
avg 1h 29m · Chicago Midway → Ronald Reagan Washington National
KLGB → KPHX
4
avg 1h 3m · Long Beach Airport (Daugherty Field) → Phoenix Sky Harbor
AZ33 → KMDW
2
avg 3h 4m · Knoell-Main Office Heliport → Chicago Midway
US-2044 → KPHX
1
avg 1h 12m · Aero Long Beach 7 Helipad → Phoenix Sky Harbor
IL74 → KDCA
1
avg 1h 18m · Rose Packing County Heliport → Ronald Reagan Washington National
US-2046 → KPHX
1
avg 1h 0m · Aero Long Beach 3 Helipad → Phoenix Sky Harbor

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
51
B737 BOEING Boeing 737-700
33
B738 BOEING Boeing 737-800
29

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
8
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 SWA4128

30
N8994QBOEING Boeing 737 MAX 8
→
06/03/2026
1h 54m
No alerts
Replay Analysis
N8994QBOEING Boeing 737 MAX 8
→
06/03/2026
17m
No alerts
Replay Analysis
N8994QBOEING Boeing 737 MAX 8
→
06/03/2026
1h 0m
No alerts
Replay Analysis
N8994QBOEING Boeing 737 MAX 8
→
06/03/2026
1h 45m
No alerts
Replay Analysis
N8994QBOEING Boeing 737 MAX 8
→
06/03/2026
1h 12m
No alerts
Replay Analysis
N213WNBOEING Boeing 737-700
→
06/03/2026
41m
No alerts
Replay Analysis
N213WNBOEING Boeing 737-700
→
06/02/2026
2h 56m
No alerts
Replay Analysis
N213WNBOEING Boeing 737-700
→
06/02/2026
2h 13m
No alerts
Replay Analysis
N210WNBOEING Boeing 737-700
→
06/02/2026
1h 3m
No alerts
Replay Analysis
N210WNBOEING Boeing 737-700
→
06/02/2026
2h 4m
No alerts
Replay Analysis
N210WNBOEING Boeing 737-700
→
06/02/2026
1h 18m
△ Unstable
Replay Analysis
N8607MBOEING Boeing 737-800
→
06/02/2026
47m
No alerts
Replay Analysis
N8607MBOEING Boeing 737-800
→
06/01/2026
2h 8m
No alerts
Replay Analysis
N8607MBOEING Boeing 737-800
→
06/01/2026
2h 57m
No alerts
Replay Analysis
N8834LBOEING Boeing 737 MAX 8
→
06/01/2026
1h 29m
No alerts
Replay Analysis
N8834LBOEING Boeing 737 MAX 8
→
05/31/2026
3h 24m
No alerts
Replay Analysis
N8664JBOEING Boeing 737-800
→
05/31/2026
1h 13m
No alerts
Replay Analysis
N8886CBOEING Boeing 737 MAX 8
→
05/29/2026
2h 10m
No alerts
Replay Analysis
N8619FBOEING Boeing 737-800
→
05/29/2026
44m
No alerts
Replay Analysis
N8619FBOEING Boeing 737-800
→
05/28/2026
2h 8m
No alerts
Replay Analysis
N8619FBOEING Boeing 737-800
→
05/28/2026
23m
No alerts
Replay Analysis
N8619FBOEING Boeing 737-800
→
05/28/2026
3h 41m
No alerts
Replay Analysis
N7857BBOEING Boeing 737-700
→
05/28/2026
43m
No alerts
Replay Analysis
N7823ABOEING Boeing 737-700
→
05/26/2026
2h 12m
No alerts
Replay Analysis
N7823ABOEING Boeing 737-700
→
05/26/2026
57m
No alerts
Replay Analysis
N7823ABOEING Boeing 737-700
→
05/26/2026
1h 39m
No alerts
Replay Analysis
N7823ABOEING Boeing 737-700
→
05/26/2026
1h 4m
No alerts
Replay Analysis
N8825QBOEING Boeing 737 MAX 8
→
05/26/2026
56m
△ Unstable
Replay Analysis
N8825QBOEING Boeing 737 MAX 8
→
05/25/2026
3h 12m
△ Unstable
Replay Analysis
N8825QBOEING Boeing 737 MAX 8
→
05/25/2026
2h 15m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window