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Flight WN159

Southwest Airlines flight WN159

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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 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

Fresno (FAT) to San Diego (SAN)

Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 50 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
50 min
Flights arriving 15+ minutes late
Flights tracked
60
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 69%
  • Late-arriving aircraft 30%
  • Airline (crew, maintenance, cleaning) 1%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Columbus (CMH)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 60 minutes. It was cancelled 1.9% of the time.

On-time arrivals
84.0%
Less than 15 minutes late
Cancelled
1.9%
Of scheduled flights
Average delay when late
60 min
Flights arriving 15+ minutes late
Flights tracked
53
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 54%
  • Late-arriving aircraft 42%
  • Air traffic control & airport 4%
  • Extreme weather 0%
  • Security 0%

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

Albany (ALB) to Baltimore (BWI)

Historically, this flight arrives 15+ minutes late 37% of the time, and when it is late the delay averages 96 minutes. It was cancelled 2.8% of the time.

On-time arrivals
62.9%
Less than 15 minutes late
Cancelled
2.8%
Of scheduled flights
Average delay when late
96 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 71%
  • Late-arriving aircraft 23%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

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

Ontario (ONT) to Austin (AUS)

Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 36 minutes. It was cancelled 0.0% of the time.

On-time arrivals
69.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
36 min
Flights arriving 15+ minutes late
Flights tracked
33
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 47%
  • Airline (crew, maintenance, cleaning) 29%
  • Late-arriving aircraft 24%
  • Extreme weather 0%
  • Security 0%

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

Spokane (GEG) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 44 minutes. It was cancelled 0.0% of the time.

On-time arrivals
96.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
44 min
Flights arriving 15+ minutes late
Flights tracked
32
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 Kansas City (MCI)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.

On-time arrivals
81.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
43 min
Flights arriving 15+ minutes late
Flights tracked
32
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 49%
  • Late-arriving aircraft 29%
  • Air traffic control & airport 22%
  • Extreme weather 0%
  • Security 0%

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

Albuquerque (ABQ) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 100 minutes. It was cancelled 0.0% of the time.

On-time arrivals
83.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
100 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 56%
  • Air traffic control & airport 44%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Nashville (BNA) to Albany (ALB)

Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 51 minutes. It was cancelled 0.0% of the time.

On-time arrivals
67.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
51 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 62%
  • Airline (crew, maintenance, cleaning) 21%
  • Air traffic control & airport 17%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Fresno (FAT)

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 45 minutes. It was cancelled 0.0% of the time.

On-time arrivals
82.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
45 min
Flights arriving 15+ minutes late
Flights tracked
29
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 50%
  • Airline (crew, maintenance, cleaning) 29%
  • Air traffic control & airport 21%
  • Extreme weather 0%
  • Security 0%

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

Houston (HOU) to Louisville (SDF)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 41 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
41 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 47%
  • Airline (crew, maintenance, cleaning) 38%
  • Air traffic control & airport 12%
  • Extreme weather 3%
  • Security 0%

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

Albany (ALB) to Orlando (MCO)

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

On-time arrivals
43.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
80 min
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 57%
  • Late-arriving aircraft 27%
  • Air traffic control & airport 11%
  • Extreme weather 5%
  • Security 0%

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

Denver (DEN) to Albany (ALB)

Only 16 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
36 min
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 65%
  • Airline (crew, maintenance, cleaning) 26%
  • Air traffic control & airport 9%
  • Extreme weather 0%
  • Security 0%

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

Oakland (OAK) 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
70 min
Flights arriving 15+ minutes late
Flights tracked
16
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).

Albuquerque (ABQ) to Houston (HOU)

Only 13 flights on record, which is too few for reliable odds.

On-time arrivals
92.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
34 min
Flights arriving 15+ minutes late
Flights tracked
13
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).

Columbus (CMH) to Baltimore (BWI)

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

On-time arrivals
72.7%
Less than 15 minutes late
Cancelled
8.3%
Of scheduled flights
Average delay when late
259 min
Flights arriving 15+ minutes late
Flights tracked
12
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 76%
  • Late-arriving aircraft 24%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Las Vegas (LAS) to Columbus (CMH)

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
78 min
Flights arriving 15+ minutes late
Flights tracked
12
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 61%
  • Late-arriving aircraft 30%
  • Air traffic control & airport 9%
  • Extreme weather 0%
  • Security 0%

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

Los Angeles (LAX) to Nashville (BNA)

Only 8 flights on record, which is too few for reliable odds.

On-time arrivals
71.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
18 min
Flights arriving 15+ minutes late
Flights tracked
8
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 58%
  • Airline (crew, maintenance, cleaning) 42%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Orlando (MCO) to Norfolk (ORF)

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

Norfolk (ORF) to Baltimore (BWI)

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

Chicago (MDW) to Tampa (TPA)

Only 5 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
15 min
Flights arriving 15+ minutes late
Flights tracked
5
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 87%
  • Air traffic control & airport 13%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Dallas (DAL) to Albuquerque (ABQ)

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
204 min
Flights arriving 15+ minutes late
Flights tracked
4
Scheduled flights in the period

What caused the delays

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

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

Las Vegas (LAS) to Ontario (ONT)

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

Seattle (SEA) to Sacramento (SMF)

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
49 min
Flights arriving 15+ minutes late
Flights tracked
4
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Airline (crew, maintenance, cleaning) 34%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

St Louis (STL) to Seattle (SEA)

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
38 min
Flights arriving 15+ minutes late
Flights tracked
4
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 48%
  • Late-arriving aircraft 40%
  • Air traffic control & airport 12%
  • Extreme weather 0%
  • Security 0%

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

San Antonio (SAT) to Dallas (DAL)

Only 3 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
3
Scheduled flights in the period

Dallas (DAL) to Knoxville/Maryville (TYS)

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

Denver (DEN) 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

Las Vegas (LAS) to Nashville (BNA)

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 91.2% 34
October 2025 83.3% 37
November 2025 89.7% 39
December 2025 75.6% 45
January 2026 81.2% 33
February 2026 84.6% 28
March 2026 67.7% 31
April 2026 90.6% 32
May 2026 86.1% 36
June 2026 60.8% 52
July 2026 68.5% 55
August 2026 77.5% 72

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.