SWA3904 is operated by SOUTHWEST AIRLINES CO between Phoenix Sky Harbor International Airport (KPHX) and St Louis Lambert International Airport (KSTL). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 48m. SkyMeter has observed 80 legs of this flight number via ADS-B.

✈
FLIGHTS
80
last 90 days
⏱
AVG DURATION
1h 48m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/18/2026
first → last seen
🗺
ROUTES / TYPES
12 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

5
KPHX → KSTL
28
avg 2h 44m · Phoenix Sky Harbor → St Louis Lambert
KSTL → KDAL
23
avg 1h 21m · St Louis Lambert → Dallas Love Field
KMCI → KSTL
1
avg 43m · Kansas City → St Louis Lambert
KSAN → KSJC
1
avg 1h 41m · San Diego → Norman Y. Mineta San Jose
KMEM → KSTL
1
avg 54m · Memphis → St Louis Lambert

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
41
B738 BOEING Boeing 737-800
39
B737 BOEING Boeing 737-700
1

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 SWA3904

30
N1776R
→
07/18/2026
1h 40m
No alerts
Replay Analysis
N8929SBOEING Boeing 737 MAX 8
→
07/18/2026
1h 28m
No alerts
Replay Analysis
N8674BBOEING Boeing 737-800
→
07/17/2026
1h 23m
No alerts
Replay Analysis
N8750QBOEING Boeing 737 MAX 8
→
07/16/2026
1h 34m
No alerts
Replay Analysis
N8715QBOEING Boeing 737 MAX 8
→
07/15/2026
1h 19m
No alerts
Replay Analysis
N8717MBOEING Boeing 737 MAX 8
→
07/14/2026
1h 50m
No alerts
Replay Analysis
N8326FBOEING Boeing 737-800
→
07/13/2026
1h 27m
No alerts
Replay Analysis
N8855QBOEING Boeing 737 MAX 8
→
07/11/2026
34m
No alerts
Replay Analysis
N8837QBOEING Boeing 737 MAX 8
→
07/11/2026
1h 20m
No alerts
Replay Analysis
N456WNBOEING Boeing 737-700
→
07/10/2026
1h 30m
No alerts
Replay Analysis
N8675ABOEING Boeing 737-800
→
07/09/2026
1h 21m
No alerts
Replay Analysis
N8660ABOEING Boeing 737-800
→
07/08/2026
1h 19m
No alerts
Replay Analysis
N8856SBOEING Boeing 737 MAX 8
→
07/07/2026
1h 13m
No alerts
Replay Analysis
N8547VBOEING Boeing 737-800
→
07/06/2026
1h 34m
No alerts
Replay Analysis
N8678EBOEING Boeing 737-800
→
07/04/2026
1h 43m
No alerts
Replay Analysis
N8921QBOEING Boeing 737 MAX 8
→
07/03/2026
1h 28m
No alerts
Replay Analysis
N8810LBOEING Boeing 737 MAX 8
→
07/02/2026
1h 43m
No alerts
Replay Analysis
N8846QBOEING Boeing 737 MAX 8
→
07/01/2026
1h 26m
No alerts
Replay Analysis
N8558ZBOEING Boeing 737-800
→
06/30/2026
1h 16m
No alerts
Replay Analysis
N8724JBOEING Boeing 737 MAX 8
→
06/29/2026
1h 18m
No alerts
Replay Analysis
N8688JBOEING Boeing 737-800
→
06/27/2026
1h 14m
No alerts
Replay Analysis
N8316HBOEING Boeing 737-800
→
06/27/2026
1h 20m
No alerts
Replay Analysis
N8848QBOEING Boeing 737 MAX 8
→
06/26/2026
1h 28m
No alerts
Replay Analysis
N8558ZBOEING Boeing 737-800
→
06/25/2026
1h 17m
No alerts
Replay Analysis
N8537ZBOEING Boeing 737-800
→
06/24/2026
1h 22m
No alerts
Replay Analysis
N8898LBOEING Boeing 737 MAX 8
→
06/23/2026
1h 19m
No alerts
Replay Analysis
N8674BBOEING Boeing 737-800
→
06/22/2026
1h 22m
No alerts
Replay Analysis
N8837QBOEING Boeing 737 MAX 8
→
06/20/2026
1h 12m
No alerts
Replay Analysis
N8897KBOEING Boeing 737 MAX 8
→
06/20/2026
1h 17m
No alerts
Replay Analysis
N8673FBOEING Boeing 737-800
→
06/19/2026
1h 15m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window