WN3991 · SWA3991

SWA3991 over the last 30 days

As of 2026-10-25

SWA3991 is operated by Southwest Airlines on the route Nashville International Airport (BNA/KBNA) → McGhee Tyson Airport (TYS/KTYS). It usually takes off around 21:15 UTC (16:15 local time, BNA). It usually lands around 21:40 UTC (17:40 local time, TYS). Most frequent aircraft type: BOEING 737 MAX 8 (B38M).

Days with an observed flight (last 30 days)

11/30

Days of the week with an observed flight

Sat

Typical take-off

21:15 UTC · 16:15 local time (BNA)

Typical landing

21:40 UTC · 17:40 local time (TYS)

Typical time airborne

26 min

Median departure deviation from the usual time on this route

+4 min

Departures within 15 minutes of the usual time

74 %

Departures measured

23

Our measurement against the usual departure time of the route, from our own observations over the last 27 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737 MAX 8 (B38M) — Number of flights: 5
• BOEING 737-700 (B737) — Number of flights: 4
• BOEING 737-800 (B738) — Number of flights: 2

Aircraft in the last 7 days

• N9022W · BOEING 737 MAX 8 2026-10-25
• N232WN · BOEING 737-700 2026-10-24

Related flights on this route

• All flights KBNA – KTYS