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Flight WN999

Southwest Airlines flight WN999

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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

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  • Advisory Coastal Flood Statement FLL

    COASTAL FLOOD STATEMENT NOW IN EFFECT THROUGH THURSDAY EVENING

    Weather

  • Advisory Coastal Flood Advisory CLD, SAN, SNA

    COASTAL FLOOD ADVISORY IN EFFECT FROM 4 AM FRIDAY TO NOON PST TUESDAY

    Weather

  • Advisory Coastal Flood Advisory OAK, SFO, SQL, STS

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Wichita (ICT) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 125 minutes. It was cancelled 0.0% of the time.

On-time arrivals
93.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
125 min
Flights arriving 15+ minutes late
Flights tracked
59
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 92%
  • Air traffic control & airport 8%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Baltimore (BWI) to Chicago (MDW)

Historically, this flight arrives 15+ minutes late 72% of the time, and when it is late the delay averages 86 minutes. It was cancelled 4.8% of the time.

On-time arrivals
27.5%
Less than 15 minutes late
Cancelled
4.8%
Of scheduled flights
Average delay when late
86 min
Flights arriving 15+ minutes late
Flights tracked
42
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 76%
  • Airline (crew, maintenance, cleaning) 18%
  • Air traffic control & airport 5%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

St Louis (STL) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 24 minutes. It was cancelled 2.4% of the time.

On-time arrivals
95.1%
Less than 15 minutes late
Cancelled
2.4%
Of scheduled flights
Average delay when late
24 min
Flights arriving 15+ minutes late
Flights tracked
42
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 64%
  • Air traffic control & airport 19%
  • Airline (crew, maintenance, cleaning) 17%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

San Juan (SJU) to Orlando (MCO)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 26 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
26 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 67%
  • Air traffic control & airport 23%
  • Airline (crew, maintenance, cleaning) 11%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Denver (DEN) to San Antonio (SAT)

Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 69 minutes. It was cancelled 0.0% of the time.

On-time arrivals
67.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
69 min
Flights arriving 15+ minutes late
Flights tracked
28
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 64%
  • Late-arriving aircraft 30%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Fort Lauderdale (FLL) to Baltimore (BWI)

Historically, this flight arrives 15+ minutes late 85% of the time, and when it is late the delay averages 108 minutes. It was cancelled 0.0% of the time.

On-time arrivals
14.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
108 min
Flights arriving 15+ minutes late
Flights tracked
27
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 59%
  • Air traffic control & airport 22%
  • Airline (crew, maintenance, cleaning) 15%
  • Extreme weather 3%
  • Security 1%

Share of delay minutes airlines attributed to each cause (BTS).

Dallas (DAL) to Oakland (OAK)

Historically, this flight arrives 15+ minutes late 56% of the time, and when it is late the delay averages 76 minutes. It was cancelled 3.8% of the time.

On-time arrivals
44.0%
Less than 15 minutes late
Cancelled
3.8%
Of scheduled flights
Average delay when late
76 min
Flights arriving 15+ minutes late
Flights tracked
26
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 64%
  • Airline (crew, maintenance, cleaning) 35%
  • Air traffic control & airport 2%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Burbank (BUR) to San Jose (SJC)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 30 minutes. It was cancelled 4.2% of the time.

On-time arrivals
91.3%
Less than 15 minutes late
Cancelled
4.2%
Of scheduled flights
Average delay when late
30 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 88%
  • Air traffic control & airport 9%
  • Airline (crew, maintenance, cleaning) 2%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

San Antonio (SAT) to Houston (HOU)

Historically, this flight arrives 15+ minutes late 65% of the time, and when it is late the delay averages 58 minutes. It was cancelled 0.0% of the time.

On-time arrivals
35.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
58 min
Flights arriving 15+ minutes late
Flights tracked
20
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 73%
  • Air traffic control & airport 22%
  • Airline (crew, maintenance, cleaning) 4%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

San Diego (SAN) to Baltimore (BWI)

Only 16 flights on record, which is too few for reliable odds.

On-time arrivals
60.0%
Less than 15 minutes late
Cancelled
6.2%
Of scheduled flights
Average delay when late
31 min
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 39%
  • Late-arriving aircraft 34%
  • Extreme weather 18%
  • Air traffic control & airport 9%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

San Diego (SAN) to Denver (DEN)

Only 15 flights on record, which is too few for reliable odds.

On-time arrivals
80.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
71 min
Flights arriving 15+ minutes late
Flights tracked
15
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 82%
  • Late-arriving aircraft 13%
  • Airline (crew, maintenance, cleaning) 5%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Boston (BOS) to St Louis (STL)

Only 14 flights on record, which is too few for reliable odds.

On-time arrivals
78.6%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
36 min
Flights arriving 15+ minutes late
Flights tracked
14
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 63%
  • Airline (crew, maintenance, cleaning) 24%
  • Late-arriving aircraft 13%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Kansas City (MCI) to Denver (DEN)

Only 12 flights on record, which is too few for reliable odds.

On-time arrivals
91.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
57 min
Flights arriving 15+ minutes late
Flights tracked
12
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 62%
  • Air traffic control & airport 38%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Orlando (MCO) to Louisville (SDF)

Only 9 flights on record, which is too few for reliable odds.

On-time arrivals
55.6%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
84 min
Flights arriving 15+ minutes late
Flights tracked
9
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 39%
  • Late-arriving aircraft 31%
  • Air traffic control & airport 30%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Chicago (MDW) to Los Angeles (LAX)

Only 8 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
76 min
Flights arriving 15+ minutes late
Flights tracked
8
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 81%
  • Airline (crew, maintenance, cleaning) 19%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Oakland (OAK) to Palm Springs (PSP)

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

Kansas City (MCI) to Orlando (MCO)

Only 5 flights on record, which is too few for reliable odds.

On-time arrivals
20.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
33 min
Flights arriving 15+ minutes late
Flights tracked
5
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 60%
  • Airline (crew, maintenance, cleaning) 29%
  • Late-arriving aircraft 11%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Louisville (SDF) to Baltimore (BWI)

Only 4 flights on record, which is too few for reliable odds.

On-time arrivals
25.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
64 min
Flights arriving 15+ minutes late
Flights tracked
4
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 88%
  • Airline (crew, maintenance, cleaning) 9%
  • Air traffic control & airport 2%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Austin (AUS) 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

Memphis (MEM) to Dallas (DAL)

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 Diego (SAN) to Salt Lake City (SLC)

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

Sacramento (SMF) to Houston (HOU)

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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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 90.0% 30
October 2025 59.1% 22
November 2025 96.4% 28
December 2025 89.7% 29
January 2026 82.8% 30
February 2026 96.0% 25
March 2026 60.0% 55
April 2026 75.8% 33
May 2026 64.0% 27
June 2026 26.8% 41
July 2026 34.9% 46
August 2026 78.6% 28

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

Latest airport & airline headlines

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Headlines found by Google News; stories open on the publisher's site.