WN4124 · SWA4124

SWA4124 over the last 30 days

As of 2026-10-26

SWA4124 is operated by Southwest Airlines on the route Ronald Reagan Washington National Airport (DCA/KDCA) → St. Louis Lambert International Airport (STL/KSTL). It usually takes off around 23:28 UTC (19:28 local time, DCA). It usually lands around 01:15 UTC (20:15 local time, STL). Most frequent aircraft type: BOEING 737 MAX 8 (B38M).

Days with an observed flight (last 30 days)

19/30

Days of the week with an observed flight

Tue, Wed

Typical take-off

23:28 UTC · 19:28 local time (DCA)

Typical landing

01:15 UTC · 20:15 local time (STL)

Typical time airborne

108 min

Median departure deviation from the usual time on this route

+5 min

Departures within 15 minutes of the usual time

69 %

Departures measured

86

Our measurement against the usual departure time of the route, from our own observations over the last 28 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: 20
• BOEING 737-800 (B738) — Number of flights: 8
• BOEING 737-700 (B737) — Number of flights: 5

Aircraft in the last 7 days

• N8975K · BOEING 737 MAX 8 2026-10-26
• N7881A · BOEING 737-700 2026-10-26
• N8827Q · BOEING 737 MAX 8 2026-10-23
• N8823Q · BOEING 737 MAX 8 2026-10-22
• N8895Q · BOEING 737 MAX 8 2026-10-21
• N8996Q · BOEING 737 MAX 8 2026-10-20

Related flights on this route

• All flights KDCA – KSTL