SWA3900 is operated by SOUTHWEST AIRLINES CO between Tucson International Airport / Morris Air National Guard Base (KTUS) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 28m. SkyMeter has observed 132 legs of this flight number via ADS-B.

✈
FLIGHTS
132
last 90 days
⏱
AVG DURATION
1h 28m
tracked time
📅
SERVICE PERIOD
05/28/2025 → 07/03/2026
first → last seen
🗺
ROUTES / TYPES
11 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.8%
1 flagged

Routes flown

By count · last 90 days

8
KTUS → KDEN
46
avg 1h 33m · Tucson International Airport / Morris Air National Guard Base → Denver
KLAS → KTUS
23
avg 1h 32m · McCarran → Tucson International Airport / Morris Air National Guard Base
KSAN → KTUS
14
avg 1h 21m · San Diego → Tucson International Airport / Morris Air National Guard Base
KSTL → KCLE
12
avg 1h 11m · St Louis Lambert → Cleveland Hopkins
KPHX → KTUS
8
avg 30m · Phoenix Sky Harbor → Tucson International Airport / Morris Air National Guard Base
KLAS → KDEN
5
avg 4h 44m · McCarran → Denver
KMCO → KSTL
3
avg 2h 9m · Orlando → St Louis Lambert
KNZY → KTUS
2
avg 1h 18m · North Island Naval Air Station-Halsey Field → Tucson International Airport / Morris Air National Guard Base

Aircraft types

Equipment used on this number

3
B38M BOEING Boeing 737 MAX 8
93
B737 BOEING Boeing 737-700
72
B738 BOEING Boeing 737-800
15

Safety profile

Flagged flights · last 90 days

Go-arounds
1
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 SWA3900

30
N203WNBOEING Boeing 737-700
→
07/03/2026
1h 33m
No alerts
Replay Analysis
N266WNBOEING Boeing 737-700
→
06/30/2026
1h 9m
No alerts
Replay Analysis
N908WNBOEING Boeing 737-700
→
06/27/2026
1h 5m
No alerts
Replay Analysis
N246LVBOEING Boeing 737-700
→
06/26/2026
1h 4m
No alerts
Replay Analysis
N247WNBOEING Boeing 737-700
→
06/23/2026
1h 6m
No alerts
Replay Analysis
N240WNBOEING Boeing 737-700
→
06/20/2026
1h 11m
No alerts
Replay Analysis
N908WNBOEING Boeing 737-700
→
06/19/2026
1h 5m
No alerts
Replay Analysis
N249WNBOEING Boeing 737-700
→
06/16/2026
1h 12m
No alerts
Replay Analysis
N216WRBOEING Boeing 737-700
→
06/13/2026
1h 14m
No alerts
Replay Analysis
N255WNBOEING Boeing 737-700
→
06/12/2026
1h 7m
No alerts
Replay Analysis
N7881ABOEING Boeing 737-700
→
06/09/2026
1h 12m
No alerts
Replay Analysis
N7742BBOEING Boeing 737-700
→
06/06/2026
1h 11m
No alerts
Replay Analysis
N264LVBOEING Boeing 737-700
→
06/05/2026
1h 18m
No alerts
Replay Analysis
N7854BBOEING Boeing 737-700
→
06/04/2026
1h 17m
No alerts
Replay Analysis
N7854BBOEING Boeing 737-700
→
06/03/2026
1h 35m
No alerts
Replay Analysis
N7854BBOEING Boeing 737-700
→
06/03/2026
17m
No alerts
Replay Analysis
N7854BBOEING Boeing 737-700
→
06/03/2026
1h 22m
No alerts
Replay Analysis
N7815LBOEING Boeing 737-700
→
06/02/2026
1h 27m
No alerts
Replay Analysis
N7815LBOEING Boeing 737-700
→
06/02/2026
1h 12m
No alerts
Replay Analysis
N8907LBOEING Boeing 737 MAX 8
→
06/02/2026
1h 18m
No alerts
Replay Analysis
N8907LBOEING Boeing 737 MAX 8
→
06/01/2026
13m
No alerts
Replay Analysis
N8907LBOEING Boeing 737 MAX 8
→
06/01/2026
1h 31m
No alerts
Replay Analysis
N8907LBOEING Boeing 737 MAX 8
→
06/01/2026
1h 48m
No alerts
Replay Analysis
N266WNBOEING Boeing 737-700
→
05/31/2026
1h 30m
No alerts
Replay Analysis
N8919KBOEING Boeing 737 MAX 8
→
05/30/2026
1h 38m
No alerts
Replay Analysis
N8919KBOEING Boeing 737 MAX 8
→
05/30/2026
28m
No alerts
Replay Analysis
N8836QBOEING Boeing 737 MAX 8
→
05/30/2026
1h 9m
No alerts
Replay Analysis
N8836QBOEING Boeing 737 MAX 8
→
05/29/2026
1h 30m
No alerts
Replay Analysis
N8836QBOEING Boeing 737 MAX 8
→
05/29/2026
21m
No alerts
Replay Analysis
N8836QBOEING Boeing 737 MAX 8
→
05/29/2026
1h 15m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window