Flight WN4496
Southwest Airlines flight WN4496
Looking for WN4496 in the air…
Alerts at this flight's airports
St Louis (STL) to Milwaukee (MKE)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 64 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 93.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 57
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 48%
- Late-arriving aircraft 43%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (MDW) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 52% of the time, and when it is late the delay averages 92 minutes. It was cancelled 8.0% of the time.
- On-time arrivals
- 47.8%
- Less than 15 minutes late
- Cancelled
- 8.0%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 16%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Juan (SJU) to Baltimore (BWI)
Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 81.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 49 min
- Flights arriving 15+ minutes late
- Flights tracked
- 22
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 78%
- Airline (crew, maintenance, cleaning) 12%
- Air traffic control & airport 10%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Omaha (OMA) to Denver (DEN)
Only 14 flights on record, which is too few for reliable odds.
- On-time arrivals
- 85.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 14
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Air traffic control & airport 49%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Denver (DEN)
Only 13 flights on record, which is too few for reliable odds.
- On-time arrivals
- 84.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 81 min
- Flights arriving 15+ minutes late
- Flights tracked
- 13
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 92%
- Airline (crew, maintenance, cleaning) 8%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas (DAL) to Orlando (MCO)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 0.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 88%
- Airline (crew, maintenance, cleaning) 11%
- Air traffic control & airport 1%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Dallas (DAL)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 0.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 12%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Columbus (CMH) to Chicago (MDW)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 85.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 77%
- Air traffic control & airport 23%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas (DAL) to Omaha (OMA)
Only 4 flights 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
- 4
- Scheduled flights in the period
Tampa (TPA) to Nashville (BNA)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 25.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 35 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 58%
- Late-arriving aircraft 42%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Boston (BOS) to Chicago (MDW)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- —
- Less than 15 minutes late
- Cancelled
- 100.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
Phoenix (PHX) to Kansas City (MCI)
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 |
|---|---|---|
| September 2025 | 90.0% | 30 |
| October 2025 | 77.3% | 22 |
| November 2025 | 100.0% | 3 |
| April 2026 | 95.8% | 24 |
| May 2026 | 96.7% | 30 |
| June 2026 | 46.2% | 14 |
| July 2026 | 50.0% | 13 |
| August 2026 | 19.4% | 37 |
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