Flight WN3730
Southwest Airlines flight WN3730
Looking for WN3730 in the air…
Alerts at this flight's airports
San Jose (SJC) to Chicago (MDW)
Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 37 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 95.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 37 min
- Flights arriving 15+ minutes late
- Flights tracked
- 63
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 84%
- Air traffic control & airport 16%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Juan (SJU) to Tampa (TPA)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 101 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 101 min
- Flights arriving 15+ minutes late
- Flights tracked
- 59
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Late-arriving aircraft 42%
- Air traffic control & airport 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Chicago (MDW)
Historically, this flight arrives 15+ minutes late 40% of the time, and when it is late the delay averages 60 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 59.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 56%
- Airline (crew, maintenance, cleaning) 31%
- Extreme weather 7%
- Air traffic control & airport 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to Los Angeles (LAX)
Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 116 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 69.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 116 min
- Flights arriving 15+ minutes late
- Flights tracked
- 33
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 97%
- Late-arriving aircraft 2%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to Baltimore (BWI)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 254 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 254 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 48% of the time, and when it is late the delay averages 71 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 51.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 28
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 72%
- Air traffic control & airport 22%
- Airline (crew, maintenance, cleaning) 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Baltimore (BWI) to Minneapolis (MSP)
Only 10 flights on record, which is too few for reliable odds.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 10
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 90%
- Late-arriving aircraft 10%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Los Angeles (LAX) to San Francisco (SFO)
Only 5 flights on record, which is too few for reliable odds.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 109 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- 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).
Los Angeles (LAX) to Tampa (TPA)
Only 5 flights on record, which is too few for reliable odds.
- On-time arrivals
- 60.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 55 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 71%
- Air traffic control & airport 29%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Raleigh/Durham (RDU) to Baltimore (BWI)
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
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 92.3% | 39 |
| October 2025 | 100.0% | 3 |
| November 2025 | 92.3% | 27 |
| December 2025 | 96.8% | 31 |
| January 2026 | 100.0% | 5 |
| March 2026 | 68.6% | 35 |
| April 2026 | 74.2% | 32 |
| May 2026 | 48.4% | 31 |
| June 2026 | 89.7% | 29 |
| July 2026 | 90.0% | 30 |
| August 2026 | 56.7% | 31 |
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