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Flight WN438

Southwest Airlines flight WN438

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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

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

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Birmingham (BHM) to Orlando (MCO)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 46 minutes. It was cancelled 0.0% of the time.

On-time arrivals
91.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
46 min
Flights arriving 15+ minutes late
Flights tracked
58
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 53%
  • Airline (crew, maintenance, cleaning) 41%
  • Late-arriving aircraft 5%
  • Extreme weather 0%
  • Security 0%

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

Austin (AUS) to San Diego (SAN)

Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.0% of the time.

On-time arrivals
78.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
48 min
Flights arriving 15+ minutes late
Flights tracked
57
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 45%
  • Airline (crew, maintenance, cleaning) 37%
  • Air traffic control & airport 19%
  • Extreme weather 0%
  • Security 0%

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

Baltimore (BWI) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 31 minutes. It was cancelled 2.2% of the time.

On-time arrivals
88.9%
Less than 15 minutes late
Cancelled
2.2%
Of scheduled flights
Average delay when late
31 min
Flights arriving 15+ minutes late
Flights tracked
46
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 43%
  • Late-arriving aircraft 31%
  • Airline (crew, maintenance, cleaning) 22%
  • Extreme weather 3%
  • Security 0%

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

Columbus (CMH) to Fort Myers (RSW)

Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.

On-time arrivals
97.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
38 min
Flights arriving 15+ minutes late
Flights tracked
35
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).

Austin (AUS) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 66 minutes. It was cancelled 0.0% of the time.

On-time arrivals
60.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
66 min
Flights arriving 15+ minutes late
Flights tracked
28
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 38%
  • Air traffic control & airport 34%
  • Late-arriving aircraft 28%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to St Louis (STL)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 74 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
74 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 91%
  • Air traffic control & airport 9%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to San Diego (SAN)

Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 88 minutes. It was cancelled 0.0% of the time.

On-time arrivals
65.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
88 min
Flights arriving 15+ minutes late
Flights tracked
20
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 63%
  • Airline (crew, maintenance, cleaning) 29%
  • Air traffic control & airport 8%
  • Extreme weather 0%
  • Security 0%

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

Albuquerque (ABQ) to Las Vegas (LAS)

Only 17 flights on record, which is too few for reliable odds.

On-time arrivals
88.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
65 min
Flights arriving 15+ minutes late
Flights tracked
17
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).

Burbank (BUR) to Phoenix (PHX)

Only 17 flights on record, which is too few for reliable odds.

On-time arrivals
88.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
31 min
Flights arriving 15+ minutes late
Flights tracked
17
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 97%
  • Airline (crew, maintenance, cleaning) 3%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Austin (AUS) to Atlanta (ATL)

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

On-time arrivals
68.8%
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

  • Late-arriving aircraft 68%
  • Airline (crew, maintenance, cleaning) 32%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Los Angeles (LAX) to Austin (AUS)

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 Baltimore (BWI)

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

On-time arrivals
16.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
76 min
Flights arriving 15+ minutes late
Flights tracked
12
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 61%
  • Air traffic control & airport 21%
  • Airline (crew, maintenance, cleaning) 17%
  • Extreme weather 0%
  • Security 0%

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

Cincinnati / Covington (CVG) to Baltimore (BWI)

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
37 min
Flights arriving 15+ minutes late
Flights tracked
10
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 57%
  • Late-arriving aircraft 43%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Chicago (MDW) to Cincinnati / Covington (CVG)

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
45 min
Flights arriving 15+ minutes late
Flights tracked
10
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).

Burbank (BUR) to San Jose (SJC)

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

Spokane (GEG) to Sacramento (SMF)

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

Denver (DEN) to Burbank (BUR)

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

On-time arrivals
40.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
31 min
Flights arriving 15+ minutes late
Flights tracked
5
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 57%
  • Late-arriving aircraft 43%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Nashville (BNA) to Jacksonville (JAX)

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

What caused the delays

  • Airline (crew, maintenance, cleaning) 66%
  • Air traffic control & airport 31%
  • Late-arriving aircraft 3%
  • Extreme weather 0%
  • Security 0%

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

Harlingen (HRL) to Houston (HOU)

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

What caused the delays

  • Late-arriving aircraft 96%
  • Air traffic control & airport 4%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Austin (AUS) to San Jose (SJC)

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

Nashville (BNA) 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

Chicago (MDW) to Ontario (ONT)

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 89.7% 39
October 2025 93.8% 32
November 2025 89.7% 30
December 2025 87.1% 31
January 2026 93.3% 30
February 2026 92.9% 28
March 2026 61.7% 47
April 2026 73.5% 34
May 2026 77.4% 31
June 2026 86.7% 30
July 2026 93.3% 30
August 2026 58.1% 31

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.