Flight WN1901
Southwest Airlines flight WN1901
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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
Denver (DEN) to Little Rock (LIT)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 60 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 87.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 64
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 61%
- Air traffic control & airport 32%
- Airline (crew, maintenance, cleaning) 6%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Hayden (HDN) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 95 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 86.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 61
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 96%
- Air traffic control & airport 4%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Las Vegas (LAS)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 86 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 65.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 86 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 59%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 14%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Oklahoma City (OKC)
Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 56 minutes. It was cancelled 1.9% of the time.
- On-time arrivals
- 84.9%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 54
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 63%
- Airline (crew, maintenance, cleaning) 21%
- Air traffic control & airport 16%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Charlotte (CLT) to Chicago (MDW)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 69 minutes. It was cancelled 3.0% of the time.
- On-time arrivals
- 84.4%
- Less than 15 minutes late
- Cancelled
- 3.0%
- Of scheduled flights
- Average delay when late
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 33
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 60%
- Air traffic control & airport 40%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Burbank (BUR) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.
- 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
- 30
- Scheduled flights in the period
San Diego (SAN) to Houston (HOU)
Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.
- 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
- 23
- Scheduled flights in the period
Houston (HOU) to Harlingen (HRL)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 53 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 53 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- 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).
Birmingham (BHM) to Orlando (MCO)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 58.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 116 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 78%
- Air traffic control & airport 22%
- Airline (crew, maintenance, cleaning) 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Baltimore (BWI) to Birmingham (BHM)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 63.6%
- Less than 15 minutes late
- Cancelled
- 8.3%
- Of scheduled flights
- Average delay when late
- 122 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Extreme weather 47%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 12%
- Late-arriving aircraft 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to Raleigh/Durham (RDU)
Only 10 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
- 10
- Scheduled flights in the period
Las Vegas (LAS) to Atlanta (ATL)
Only 10 flights on record, which is too few for reliable odds.
- On-time arrivals
- 90.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 19 min
- Flights arriving 15+ minutes late
- Flights tracked
- 10
- 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).
Little Rock (LIT) to Dallas (DAL)
Only 6 flights on record, which is too few for reliable odds.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 28 min
- Flights arriving 15+ minutes late
- Flights tracked
- 6
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 61%
- Airline (crew, maintenance, cleaning) 39%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dallas (DAL) to New York (LGA)
Only 4 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
- 4
- Scheduled flights in the period
Salt Lake City (SLC) to San Diego (SAN)
Only 4 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
- 4
- Scheduled flights in the period
Nashville (BNA) to Kansas City (MCI)
Only 2 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
- 2
- Scheduled flights in the period
Dallas (DAL) to Milwaukee (MKE)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 0.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 15 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 73%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 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
In the news
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 100.0% | 22 |
| October 2025 | 93.9% | 49 |
| November 2025 | 88.2% | 34 |
| December 2025 | 81.8% | 33 |
| January 2026 | 93.5% | 47 |
| February 2026 | 86.1% | 37 |
| March 2026 | 84.4% | 33 |
| April 2026 | 70.0% | 30 |
| May 2026 | 67.7% | 31 |
| June 2026 | 80.0% | 30 |
| July 2026 | 90.3% | 31 |
| August 2026 | 67.9% | 29 |
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