Flight WN4137
Southwest Airlines flight WN4137
Looking for WN4137 in the air…
Alerts at this flight's airports
-
Read the story →
Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
Phoenix (PHX) to Sacramento (SMF)
Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 44 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 67.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 44 min
- Flights arriving 15+ minutes late
- Flights tracked
- 64
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 64%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 6%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Indianapolis (IND) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 43 min
- Flights arriving 15+ minutes late
- Flights tracked
- 52
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 69%
- Airline (crew, maintenance, cleaning) 31%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to San Jose (SJC)
Historically, this flight arrives 15+ minutes late 42% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 58.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 80%
- Airline (crew, maintenance, cleaning) 17%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Eugene (EUG)
Only 15 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
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 15
- 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).
Las Vegas (LAS) to Houston (HOU)
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
Santa Barbara (SBA) to Oakland (OAK)
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 | 57.1% | 28 |
| December 2025 | 77.4% | 31 |
| January 2026 | 60.0% | 5 |
| February 2026 | 100.0% | 1 |
| March 2026 | 83.3% | 12 |
| April 2026 | 75.0% | 4 |
| June 2026 | 91.3% | 23 |
| July 2026 | 100.0% | 27 |
| August 2026 | 61.5% | 26 |
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