Flight WN2004
Southwest Airlines flight WN2004
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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
Tampa (TPA) to Columbus (CMH)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 70 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 55
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 79%
- Air traffic control & airport 13%
- Airline (crew, maintenance, cleaning) 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to Dallas (DAL)
Historically, this flight arrives 15+ minutes late 63% of the time, and when it is late the delay averages 89 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 36.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 89 min
- Flights arriving 15+ minutes late
- Flights tracked
- 49
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 76%
- Airline (crew, maintenance, cleaning) 16%
- Air traffic control & airport 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Indianapolis (IND) to Orlando (MCO)
Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 45 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 80.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 45 min
- Flights arriving 15+ minutes late
- Flights tracked
- 30
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 64%
- Airline (crew, maintenance, cleaning) 20%
- Late-arriving aircraft 15%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Nashville (BNA) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 51 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 51 min
- Flights arriving 15+ minutes late
- Flights tracked
- 28
- 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).
Tucson (TUS) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 31 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 92.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 31 min
- Flights arriving 15+ minutes late
- Flights tracked
- 28
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Air traffic control & airport 47%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Las Vegas (LAS)
Historically, this flight arrives 15+ minutes late 100% of the time, and when it is late the delay averages 90 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 0.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 67%
- Airline (crew, maintenance, cleaning) 18%
- Air traffic control & airport 15%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas (DAL) to St Louis (STL)
Historically, this flight arrives 15+ minutes late 100% of the time, and when it is late the delay averages 86 minutes. It was cancelled 4.3% of the time.
- On-time arrivals
- 0.0%
- Less than 15 minutes late
- Cancelled
- 4.3%
- Of scheduled flights
- Average delay when late
- 86 min
- Flights arriving 15+ minutes late
- Flights tracked
- 23
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 95%
- Airline (crew, maintenance, cleaning) 5%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Dallas (DAL)
Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 64 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 65.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 23
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Airline (crew, maintenance, cleaning) 31%
- Air traffic control & airport 22%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to New Orleans (MSY)
Historically, this flight arrives 15+ minutes late 50% of the time, and when it is late the delay averages 61 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 22
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 62%
- Late-arriving aircraft 23%
- Air traffic control & airport 9%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Houston (HOU) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 70% of the time, and when it is late the delay averages 56 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 30.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 20
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 92%
- Air traffic control & airport 8%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to San Diego (SAN)
Only 17 flights on record, which is too few for reliable odds.
- On-time arrivals
- 56.2%
- Less than 15 minutes late
- Cancelled
- 5.9%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 17
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Air traffic control & airport 38%
- Airline (crew, maintenance, cleaning) 18%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Reno (RNO) to Las Vegas (LAS)
Only 16 flights on record, which is too few for reliable odds.
- On-time arrivals
- 93.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 16
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 77%
- Air traffic control & airport 13%
- Airline (crew, maintenance, cleaning) 10%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Boise (BOI) to San Diego (SAN)
Only 10 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
- 28 min
- Flights arriving 15+ minutes late
- Flights tracked
- 10
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 80%
- Late-arriving aircraft 17%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Panama City Beach (ECP) to Austin (AUS)
Only 8 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
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- 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).
San Diego (SAN) to San Francisco (SFO)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 62.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 54 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 66%
- Air traffic control & airport 26%
- Airline (crew, maintenance, cleaning) 8%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Jose (SJC) to Reno (RNO)
Only 7 flights on record, which is too few for reliable odds.
- On-time arrivals
- 85.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 7
- 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).
Denver (DEN) to San Diego (SAN)
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
- 27 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 62%
- Airline (crew, maintenance, cleaning) 38%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Las Vegas (LAS) to Long Beach (LGB)
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
San Jose (SJC) to Las Vegas (LAS)
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
St Louis (STL) to Washington (DCA)
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 |
|---|---|---|
| September 2025 | 59.3% | 60 |
| October 2025 | 52.2% | 23 |
| November 2025 | 88.5% | 26 |
| December 2025 | 74.1% | 27 |
| January 2026 | 83.3% | 30 |
| February 2026 | 92.9% | 28 |
| March 2026 | 88.9% | 27 |
| April 2026 | 40.7% | 55 |
| May 2026 | 31.2% | 64 |
| June 2026 | 44.4% | 9 |
| July 2026 | 80.0% | 5 |
| August 2026 | 28.6% | 21 |
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