Flight WN4173
Southwest Airlines flight WN4173
Looking for WN4173 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
Providence/Warwick (PVD) to Orlando (MCO)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 83 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 40
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 87%
- Air traffic control & airport 13%
- Late-arriving aircraft 0%
- 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 9% of the time, and when it is late the delay averages 46 minutes. It was cancelled 3.0% of the time.
- On-time arrivals
- 90.6%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 46 min
- Flights arriving 15+ minutes late
- Flights tracked
- 33
- 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).
Fort Myers (RSW) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 43 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 74%
- Air traffic control & airport 21%
- Airline (crew, maintenance, cleaning) 6%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Antonio (SAT) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 55% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 45.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 38 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 83%
- Air traffic control & airport 9%
- Airline (crew, maintenance, cleaning) 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 70% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 29.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 43 min
- Flights arriving 15+ minutes late
- Flights tracked
- 27
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 61%
- Air traffic control & airport 31%
- Airline (crew, maintenance, cleaning) 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Los Angeles (LAX) to St Louis (STL)
Only 8 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
- 8
- Scheduled flights in the period
Milwaukee (MKE) to Kansas City (MCI)
Only 8 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
- 8
- Scheduled flights in the period
Tampa (TPA) to Las Vegas (LAS)
Only 8 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
- 8
- Scheduled flights in the period
In the news
More headlines →-
Los Angeles World Airports partners with local brands to transform its dining and retail offering at LAX
Future Travel Experience LAX
-
Los Angeles International Airport Departures
Flightradar24 LAX
-
LAX People Mover Delayed to 2027, More Travel News
Eye of the Flyer LAX
-
LAX roasted over absurd Starbucks pricing — one of the worst markups in the country
New York Post LAX
-
Outrageous new report puts LAX in interesting company
New York Post LAX
-
LAX ranked most reliable airport in U.S. in 2026: Report
AOL.com LAX
Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 90.0% | 30 |
| October 2025 | 100.0% | 1 |
| November 2025 | 89.5% | 19 |
| December 2025 | 94.1% | 17 |
| January 2026 | 75.0% | 4 |
| February 2026 | 100.0% | 7 |
| March 2026 | 88.9% | 28 |
| April 2026 | 63.2% | 19 |
| May 2026 | 41.2% | 17 |
| June 2026 | 47.1% | 17 |
| July 2026 | 41.2% | 17 |
| August 2026 | 100.0% | 10 |
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