No delays reported for WN 1991 (HOU→JAN, SMF→SAN, JAN→BNA) as of 6:47 PM ET. It arrived on time 69.5% of the time in June-August 2026. When it was late, the average delay was 42 minutes. None were cancelled. Right now there are no reported delays at HOU, JAN, SMF, SAN, BNA.
May not fly today
Leg 1 of 3 (HOU → JAN): Next leg HOU → JAN, scheduled 9:25 AM local time. No delays at HOU right now. This flight number flew about 2 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Low 0% of its flights were cancelled in June-August 2026.
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 |
|---|---|---|
| HOU → JAN Houston, TX to Jackson/Vicksburg, MS | 9:25 AM → 10:45 AM | 93% |
| SMF → SAN Sacramento, CA to San Diego, CA | 9:30 AM → 11:05 AM | 83% |
| JAN → BNA Jackson/Vicksburg, MS to Nashville, TN | 11:25 AM → 12:40 PM | 63% |
Local times. Schedules change; check your booking.
How reliable is WN 1991?
| Arrived on time (within 15 min) | 69.5% |
| Average delay when late | 42 min |
| Cancelled | 0% |
| Diverted | 1% |
| Flights tracked | 96 |
Best and worst days to fly WN 1991
WN 1991 was most reliable on Fridays (82% on time) and least reliable on Tuesdays (56%).
| Monday | |
| Tuesday | |
| Wednesday | |
| Thursday | |
| Friday | |
| Saturday | Too few flights |
| Sunday |
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 HOU → JAN
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 1991 delayed today?
Right now there are no reported delays at HOU, JAN, SMF, SAN, BNA. Checked 6:47 PM ET. For this flight's gate and exact status, check the Southwest app.
Is WN 1991 usually on time?
WN 1991 arrived within 15 minutes of schedule 69.5% of the time in June-August 2026, with an average delay of 42 minutes when late.
How often is WN 1991 cancelled?
0% of WN 1991 flights were cancelled in June-August 2026.