Flight WN3388
Southwest Airlines flight WN3388
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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
Knoxville/Maryville (TYS) to Nashville (BNA)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 38 min
- Flights arriving 15+ minutes late
- Flights tracked
- 60
- 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).
Chicago (MDW) to Sacramento (SMF)
Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 34 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 75.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 43%
- Airline (crew, maintenance, cleaning) 28%
- Late-arriving aircraft 28%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 39 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 70.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 39 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 37%
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 27%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Norfolk (ORF) to Chicago (MDW)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 52 minutes. It was cancelled 2.2% of the time.
- On-time arrivals
- 93.3%
- Less than 15 minutes late
- Cancelled
- 2.2%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 46
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 84%
- Airline (crew, maintenance, cleaning) 12%
- Air traffic control & airport 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Long Beach (LGB)
Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 93.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 62 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).
Las Vegas (LAS) to Louisville (SDF)
Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 66.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 49 min
- Flights arriving 15+ minutes late
- Flights tracked
- 27
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Extreme weather 26%
- Airline (crew, maintenance, cleaning) 18%
- Air traffic control & airport 16%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Milwaukee (MKE) to Phoenix (PHX)
Only 18 flights on record, which is too few for reliable odds.
- On-time arrivals
- 61.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 18
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 23%
- Air traffic control & airport 20%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sacramento (SMF) to Las Vegas (LAS)
Only 12 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
- 45 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 65%
- Airline (crew, maintenance, cleaning) 32%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas (DAL) to Chicago (MDW)
Only 5 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
- 5
- Scheduled flights in the period
Baltimore (BWI) to Kansas City (MCI)
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
- 36 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 43%
- Air traffic control & airport 43%
- Late-arriving aircraft 13%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Kansas City (MCI) to New Orleans (MSY)
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
- 50 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Air traffic control & airport 33%
- Airline (crew, maintenance, cleaning) 13%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to Norfolk (ORF)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 25 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 49%
- Airline (crew, maintenance, cleaning) 27%
- Late-arriving aircraft 24%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.3% | 30 |
| October 2025 | 71.8% | 39 |
| November 2025 | 90.0% | 31 |
| December 2025 | 72.7% | 33 |
| January 2026 | 87.1% | 31 |
| February 2026 | 53.6% | 28 |
| March 2026 | 87.5% | 8 |
| April 2026 | 72.0% | 25 |
| May 2026 | 77.4% | 31 |
| June 2026 | 90.0% | 30 |
| July 2026 | 96.7% | 30 |
| August 2026 | 72.7% | 11 |
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