SWA4021 is operated by SOUTHWEST AIRLINES CO between Reno Tahoe International Airport (KRNO) and Phoenix Sky Harbor International Airport (KPHX). The flight is most often flown by a BOEING Boeing 737-700. Typical block time is 1h 41m. SkyMeter has observed 103 legs of this flight number via ADS-B.

✈
FLIGHTS
103
last 90 days
⏱
AVG DURATION
1h 41m
tracked time
📅
SERVICE PERIOD
05/31/2025 → 07/05/2026
first → last seen
🗺
ROUTES / TYPES
17 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KRNO → KPHX
42
avg 1h 51m · Reno Tahoe → Phoenix Sky Harbor
KDEN → KHOU
9
avg 2h 9m · Denver → William P Hobby
KDAL → KLGA
7
avg 3h 19m · Dallas Love Field → La Guardia
KFLL → KBNA
4
avg 2h 24m · Fort Lauderdale Hollywood → Nashville
KDEN → KMKE
3
avg 2h 17m · Denver → General Mitchell
US-0002 → KLGA
1
avg 19m · Governor's Island Army Airfield → La Guardia
KDAL → KMCI
1
avg 1h 3m · Dallas Love Field → Kansas City
KHOU → KLAS
1
avg 2h 53m · William P Hobby → McCarran
KBWI → KLGA
1
avg 1h 22m · Baltimore/Washington International Thurgood Marshall → La Guardia
KDAL → KBWI
1
avg 3h 46m · Dallas Love Field → Baltimore/Washington International Thurgood Marshall

Aircraft types

Equipment used on this number

3
B737 BOEING Boeing 737-700
65
B38M BOEING Boeing 737 MAX 8
38
B738 BOEING Boeing 737-800
20

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 SWA4021

30
N8818QBOEING Boeing 737 MAX 8
→
07/05/2026
1h 40m
No alerts
Replay Analysis
N7741CBOEING Boeing 737-700
→
07/04/2026
1h 22m
No alerts
Replay Analysis
N7741CBOEING Boeing 737-700
→
07/04/2026
1h 7m
No alerts
Replay Analysis
N7741CBOEING Boeing 737-700
→
07/03/2026
2h 38m
No alerts
Replay Analysis
N7741CBOEING Boeing 737-700
→
07/03/2026
3h 45m
No alerts
Replay Analysis
N7885ABOEING Boeing 737-700
→
07/03/2026
35m
No alerts
Replay Analysis
N7885ABOEING Boeing 737-700
→
07/02/2026
2h 38m
No alerts
Replay Analysis
N7885ABOEING Boeing 737-700
→
07/02/2026
3h 15m
No alerts
Replay Analysis
N8320JBOEING Boeing 737-800
→
07/01/2026
2h 18m
No alerts
Replay Analysis
N8320JBOEING Boeing 737-800
→
07/01/2026
44m
No alerts
Replay Analysis
N8325DBOEING Boeing 737-800
→
06/30/2026
2h 2m
No alerts
Replay Analysis
N948WNBOEING Boeing 737-700
→
06/30/2026
32m
No alerts
Replay Analysis
N948WNBOEING Boeing 737-700
→
06/29/2026
2h 42m
No alerts
Replay Analysis
N948WNBOEING Boeing 737-700
→
06/29/2026
3h 15m
No alerts
Replay Analysis
N8753QBOEING Boeing 737 MAX 8
→
06/28/2026
2h 8m
No alerts
Replay Analysis
N8753QBOEING Boeing 737 MAX 8
→
06/28/2026
12m
No alerts
Replay Analysis
N8870KBOEING Boeing 737 MAX 8
→
06/27/2026
2h 44m
No alerts
Replay Analysis
N470WNBOEING Boeing 737-700
→
06/27/2026
37m
No alerts
Replay Analysis
N470WNBOEING Boeing 737-700
→
06/26/2026
2h 24m
No alerts
Replay Analysis
N470WNBOEING Boeing 737-700
→
06/26/2026
3h 2m
No alerts
Replay Analysis
N7873ABOEING Boeing 737-700
→
06/26/2026
27m
No alerts
Replay Analysis
N7873ABOEING Boeing 737-700
→
06/25/2026
2h 33m
No alerts
Replay Analysis
N8782QBOEING Boeing 737 MAX 8
→
06/24/2026
1h 54m
No alerts
Replay Analysis
N8317MBOEING Boeing 737-800
→
06/23/2026
2h 39m
No alerts
Replay Analysis
N275WNBOEING Boeing 737-700
→
06/22/2026
1h 50m
No alerts
Replay Analysis
N8887QBOEING Boeing 737 MAX 8
→
06/22/2026
2h 11m
No alerts
Replay Analysis
N8887QBOEING Boeing 737 MAX 8
→
06/22/2026
31m
No alerts
Replay Analysis
N8527QBOEING Boeing 737-800
→
06/20/2026
2h 18m
No alerts
Replay Analysis
N7857BBOEING Boeing 737-700
→
06/20/2026
2h 5m
No alerts
Replay Analysis
N7857BBOEING Boeing 737-700
→
06/19/2026
1h 35m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window