Flight WN4919
Southwest Airlines flight WN4919
Looking for WN4919 in the air…
Alerts at this flight's airports
Nashville (BNA) to Milwaukee (MKE)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 40 minutes. It was cancelled 5.5% of the time.
- On-time arrivals
- 88.5%
- Less than 15 minutes late
- Cancelled
- 5.5%
- Of scheduled flights
- Average delay when late
- 40 min
- Flights arriving 15+ minutes late
- Flights tracked
- 55
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Air traffic control & airport 29%
- Late-arriving aircraft 23%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Burbank (BUR) to Oakland (OAK)
Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 22 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 95.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 22 min
- Flights arriving 15+ minutes late
- Flights tracked
- 43
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 62%
- Airline (crew, maintenance, cleaning) 38%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Houston (HOU) to Austin (AUS)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 26 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Extreme weather 33%
- Late-arriving aircraft 28%
- Airline (crew, maintenance, cleaning) 22%
- Air traffic control & airport 17%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Santa Barbara (SBA)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| November 2025 | 100.0% | 1 |
| January 2026 | 95.7% | 26 |
| February 2026 | 84.0% | 25 |
| March 2026 | 75.0% | 4 |
| June 2026 | 89.5% | 19 |
| July 2026 | 100.0% | 23 |
| August 2026 | 84.6% | 13 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data