Flight WN4530
Southwest Airlines flight WN4530
Looking for WN4530 in the air…
Alerts at this flight's airports
San Jose (SJC) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 64 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 73.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 64
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 20%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to San Jose (SJC)
Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 47 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 73.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 47 min
- Flights arriving 15+ minutes late
- Flights tracked
- 53
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 74%
- Airline (crew, maintenance, cleaning) 24%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Tampa (TPA) to Austin (AUS)
Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 25 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 94.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 25 min
- Flights arriving 15+ minutes late
- Flights tracked
- 50
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 50%
- Air traffic control & airport 33%
- Airline (crew, maintenance, cleaning) 17%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Nashville (BNA) to Richmond (RIC)
Historically, this flight arrives 15+ minutes late 67% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 33.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 38 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 50%
- Late-arriving aircraft 38%
- Air traffic control & airport 13%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sarasota/Bradenton (SRQ) to Pittsburgh (PIT)
Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 90 minutes. It was cancelled 6.1% of the time.
- On-time arrivals
- 64.5%
- Less than 15 minutes late
- Cancelled
- 6.1%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 33
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 59%
- Airline (crew, maintenance, cleaning) 20%
- Air traffic control & airport 16%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Jose (SJC) to Burbank (BUR)
Only 14 flights on record, which is too few for reliable odds.
- On-time arrivals
- 69.2%
- Less than 15 minutes late
- Cancelled
- 7.1%
- Of scheduled flights
- Average delay when late
- 36 min
- Flights arriving 15+ minutes late
- Flights tracked
- 14
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 100%
- Airline (crew, maintenance, cleaning) 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Palm Springs (PSP)
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
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 13
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 82%
- Airline (crew, maintenance, cleaning) 18%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Baltimore (BWI) to Albany (ALB)
Only 11 flights on record, which is too few for reliable odds.
- On-time arrivals
- 81.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 50 min
- Flights arriving 15+ minutes late
- Flights tracked
- 11
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 56%
- Late-arriving aircraft 44%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Albany (ALB) to Denver (DEN)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 196 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 85%
- Late-arriving aircraft 15%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Houston (HOU) to Baltimore (BWI)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 33 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 98%
- Air traffic control & airport 2%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to St Louis (STL)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 31 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 90%
- Airline (crew, maintenance, cleaning) 10%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Milwaukee (MKE) to Dallas (DAL)
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
San Francisco (SFO) to Chicago (MDW)
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
Albany (ALB) to Tampa (TPA)
Only 3 flights on record, which is too few for reliable odds.
- On-time arrivals
- 66.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 22 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 100.0% | 4 |
| October 2025 | 84.6% | 13 |
| November 2025 | 71.4% | 28 |
| December 2025 | 71.0% | 31 |
| January 2026 | 88.2% | 34 |
| February 2026 | 67.8% | 60 |
| March 2026 | 66.7% | 35 |
| April 2026 | 88.9% | 27 |
| May 2026 | 92.3% | 26 |
| June 2026 | 47.4% | 19 |
| July 2026 | 38.1% | 21 |
| August 2026 | 71.4% | 7 |
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