Flight Status & Tracker

SWA4399

SOUTHWEST AIRLINES CO · SLC → DEN · Last tracked Oct 18, 2026

SWA4399 is a flight number operated by SOUTHWEST AIRLINES CO between Salt Lake City International Airport (KSLC) and Denver International Airport (KDEN). SkyMeter last tracked SWA4399 on October 18, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 3m. SkyMeter has observed 43 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
43
last 90 days
⏱
AVG DURATION
1h 3m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 10/18/2026
first → last seen
🗺
ROUTES / TYPES
8 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

6
KSLC → KDEN
18
avg 1h 32m · Salt Lake City → Denver
KDAL → KLBB
7
avg 49m · Dallas Love Field → Lubbock Preston Smith
KLAS → KTUS
2
avg 1h 30m · McCarran → Tucson International Airport / Morris Air National Guard Base
9TS8 → KLBB
1
avg 41m · Dallas Rehabilitation Institute Heliport → Lubbock Preston Smith
KDAL → KCMH
1
avg 1h 51m · Dallas Love Field → John Glenn Columbus
KDAL → KF82
1
avg 1h 2m · Dallas Love Field → Town & Country Airpark

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
26
B738 BOEING Boeing 737-800
11
B737 BOEING Boeing 737-700
6

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 SWA4399

30
N8509UBOEING Boeing 737-800
→
10/18/2026
1h 28m
No alerts
Replay Analysis
N932WNBOEING Boeing 737-700
→
10/6/2026
1h 51m
No alerts
Replay Analysis
N8868LBOEING Boeing 737 MAX 8
→
10/4/2026
1h 33m
No alerts
Replay Analysis
N8535SBOEING Boeing 737-800
→
9/30/2026
1h 45m
No alerts
Replay Analysis
N8582ZBOEING Boeing 737-800
→
9/29/2026
1h 26m
No alerts
Replay Analysis
N8928QBOEING Boeing 737 MAX 8
→
9/23/2026
1h 33m
No alerts
Replay Analysis
N8928QBOEING Boeing 737 MAX 8
→
9/23/2026
12m
No alerts
Replay Analysis
N8894QBOEING Boeing 737 MAX 8
→
9/22/2026
1h 14m
No alerts
Replay Analysis
N8894QBOEING Boeing 737 MAX 8
→
9/22/2026
24m
No alerts
Replay Analysis
N8917QBOEING Boeing 737 MAX 8
→
9/16/2026
1h 45m
No alerts
Replay Analysis
N8877QBOEING Boeing 737 MAX 8
→
9/15/2026
1h 20m
No alerts
Replay Analysis
N8877QBOEING Boeing 737 MAX 8
→
9/15/2026
26m
No alerts
Replay Analysis
N8894QBOEING Boeing 737 MAX 8
→
9/9/2026
1h 28m
No alerts
Replay Analysis
N8894QBOEING Boeing 737 MAX 8
→
9/9/2026
18m
No alerts
Replay Analysis
N8797QBOEING Boeing 737 MAX 8
→
9/8/2026
1h 27m
No alerts
Replay Analysis
N8797QBOEING Boeing 737 MAX 8
→
9/8/2026
25m
No alerts
Replay Analysis
N8790QBOEING Boeing 737 MAX 8
→
9/2/2026
1h 23m
No alerts
Replay Analysis
N8790QBOEING Boeing 737 MAX 8
→
9/2/2026
18m
No alerts
Replay Analysis
N8893LBOEING Boeing 737 MAX 8
→
9/1/2026
1h 18m
No alerts
Replay Analysis
N8893LBOEING Boeing 737 MAX 8
→
9/1/2026
21m
No alerts
Replay Analysis
N8559QBOEING Boeing 737-800
→
8/26/2026
1h 27m
No alerts
Replay Analysis
N8559QBOEING Boeing 737-800
→
8/26/2026
44m
No alerts
Replay Analysis
N9006LBOEING Boeing 737 MAX 8
→
8/25/2026
1h 53m
No alerts
Replay Analysis
N8611FBOEING Boeing 737-800
→
8/19/2026
1h 21m
No alerts
Replay Analysis
N8611FBOEING Boeing 737-800
→
8/19/2026
22m
No alerts
Replay Analysis
N8979LBOEING Boeing 737 MAX 8
→
8/18/2026
1h 27m
No alerts
Replay Analysis
N8979LBOEING Boeing 737 MAX 8
→
8/18/2026
25m
No alerts
Replay Analysis
N8781QBOEING Boeing 737 MAX 8
→
8/12/2026
2h 6m
No alerts
Replay Analysis
N8654BBOEING Boeing 737-800
→
8/11/2026
1h 19m
No alerts
Replay Analysis
N8849QBOEING Boeing 737 MAX 8
→
8/5/2026
1h 46m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window