Flight WN3946
Southwest Airlines flight WN3946
Looking for WN3946 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
San Diego (SAN) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 56 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
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 63%
- Late-arriving aircraft 34%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (MDW) to Houston (HOU)
Historically, this flight arrives 15+ minutes late 53% of the time, and when it is late the delay averages 40 minutes. It was cancelled 2.6% of the time.
- On-time arrivals
- 47.4%
- Less than 15 minutes late
- Cancelled
- 2.6%
- Of scheduled flights
- Average delay when late
- 40 min
- Flights arriving 15+ minutes late
- Flights tracked
- 39
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 49%
- Late-arriving aircraft 34%
- Air traffic control & airport 17%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to Kansas City (MCI)
Historically, this flight arrives 15+ minutes late 50% of the time, and when it is late the delay averages 56 minutes. It was cancelled 4.0% of the time.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 4.0%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 58%
- Late-arriving aircraft 27%
- Air traffic control & airport 15%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Oklahoma City (OKC) to Denver (DEN)
Only 18 flights on record, which is too few for reliable odds.
- On-time arrivals
- 77.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 68 min
- Flights arriving 15+ minutes late
- Flights tracked
- 18
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 68%
- Late-arriving aircraft 24%
- Airline (crew, maintenance, cleaning) 7%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Baltimore (BWI) to Buffalo (BUF)
Only 16 flights on record, which is too few for reliable odds.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 12.5%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 16
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 83%
- Airline (crew, maintenance, cleaning) 17%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Milwaukee (MKE) to Fort Myers (RSW)
Only 14 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
- 14
- Scheduled flights in the period
Las Vegas (LAS) to Kansas City (MCI)
Only 13 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
- 13
- Scheduled flights in the period
Denver (DEN) to Nashville (BNA)
Only 9 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
- 9
- Scheduled flights in the period
Jacksonville (JAX) to Baltimore (BWI)
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
- 33 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 77%
- Airline (crew, maintenance, cleaning) 20%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (MDW) to Washington (DCA)
Only 8 flights on record, which is too few for reliable odds.
- On-time arrivals
- 71.4%
- Less than 15 minutes late
- Cancelled
- 12.5%
- Of scheduled flights
- Average delay when late
- 89 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 95%
- Air traffic control & airport 3%
- Airline (crew, maintenance, cleaning) 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Antonio (SAT) to Chicago (MDW)
Only 8 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
- 196 min
- Flights arriving 15+ minutes late
- Flights tracked
- 8
- Scheduled flights in the period
What caused the delays
- Extreme weather 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (MDW) to Orlando (MCO)
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
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- 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).
Portland (PDX) to Chicago (MDW)
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
Las Vegas (LAS) to Denver (DEN)
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
- 28 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- 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).
Chicago (MDW) to Rochester (ROC)
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
- 237 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- 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).
Show as table
| Month | On time | Flights |
|---|---|---|
| October 2025 | 97.1% | 34 |
| November 2025 | 83.3% | 6 |
| December 2025 | 63.6% | 11 |
| January 2026 | 89.7% | 29 |
| February 2026 | 60.7% | 28 |
| March 2026 | 56.5% | 24 |
| April 2026 | 55.0% | 21 |
| May 2026 | 40.9% | 22 |
| June 2026 | 75.0% | 16 |
| July 2026 | 57.1% | 16 |
| August 2026 | 70.6% | 19 |
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