Likely delayed: there are delays at WN 2400's airports as of 6:47 PM ET. It arrived on time 49.5% of the time in June-August 2026. When it was late, the average delay was 45 minutes. None were cancelled. AUS has major delays (runway construction, max 3 hours and 3 minutes), so this flight is likely to be delayed.
High cancellation risk
Leg 1 of 3 (LAX → STL): Should be in the air from LAX, scheduled to land at STL at 7:10 PM local time. This flight number flew about 5 days a week in June-August 2026, so it may not operate today. Line up a backup option.
0% of its flights were cancelled in June-August 2026; AUS has major delays; rough weather at AUS.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Southwest for official times.
Book a backup seat LAX → ATLThis flight is cancelled often; a refundable backup costs little
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| LAX → STL Los Angeles, CA to St. Louis, MO | 1:30 PM → 7:10 PM | 47% |
| AUS → MKE Austin, TX to Milwaukee, WI | 6:20 PM → 9:00 PM | 67% |
| STL → ATL St. Louis, MO to Atlanta, GA | 7:10 PM → 9:45 PM | 44% |
Local times. Schedules change; check your booking.
How reliable is WN 2400?
| Arrived on time (within 15 min) | 49.5% |
| Average delay when late | 45 min |
| Cancelled | 0% |
| Diverted | 0% |
| Flights tracked | 95 |
Best and worst days to fly WN 2400
WN 2400 was most reliable on Thursdays (69% on time) and least reliable on Saturdays (11%).
| Monday | |
| Tuesday | |
| Wednesday | |
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Southwest to the Department of Transportation.
Other flights LAX → STL
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Southwest app.
Southwest delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is WN 2400 delayed today?
AUS has major delays (runway construction, max 3 hours and 3 minutes), so this flight is likely to be delayed. Checked 6:47 PM ET. For this flight's gate and exact status, check the Southwest app.
Is WN 2400 usually on time?
WN 2400 arrived within 15 minutes of schedule 49.5% of the time in June-August 2026, with an average delay of 45 minutes when late.
How often is WN 2400 cancelled?
0% of WN 2400 flights were cancelled in June-August 2026.