No delays reported for WN 518 (IND→TPA, MDW→SAN, BNA→SAT) as of 6:47 PM ET. It arrived on time 76.9% of the time in June-August 2026. When it was late, the average delay was 57 minutes. None were cancelled. Right now there are no reported delays at IND, TPA, MDW, SAN, BNA, SAT.
May not fly today
Leg 2 of 3 (MDW → SAN): Should be in the air from MDW, scheduled to land at SAN at 4:55 PM local time. This flight number flew about 5 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Medium 0% of its flights were cancelled in June-August 2026; rough weather at SAT.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Southwest for official times.
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| IND → TPA Indianapolis, IN to Tampa, FL | 5:00 AM → 7:15 AM | 95% |
| MDW → SAN Chicago, IL to San Diego, CA | 2:50 PM → 4:55 PM | 33% |
| BNA → SAT Nashville, TN to San Antonio, TX | 8:45 PM → 11:05 PM | 42% |
Local times. Schedules change; check your booking.
How reliable is WN 518?
| Arrived on time (within 15 min) | 76.9% |
| Average delay when late | 57 min |
| Cancelled | 0% |
| Diverted | 1.1% |
| Flights tracked | 92 |
Best and worst days to fly WN 518
WN 518 was most reliable on Fridays (92% on time) and least reliable on Mondays (64%).
| 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 IND → TPA
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 518 delayed today?
Right now there are no reported delays at IND, TPA, MDW, SAN, BNA, SAT. Checked 6:47 PM ET. For this flight's gate and exact status, check the Southwest app.
Is WN 518 usually on time?
WN 518 arrived within 15 minutes of schedule 76.9% of the time in June-August 2026, with an average delay of 57 minutes when late.
How often is WN 518 cancelled?
0% of WN 518 flights were cancelled in June-August 2026.