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Flight WN1639

Southwest Airlines flight WN1639

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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

    Read the story →
  • Advisory Airport Closure SNA

    Airport Closure at John Wayne Orange County International Airport (SNA): Reopens Nov 08 at 14:15 UTC.

    Airport status

  • 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

Denver (DEN) to Salt Lake City (SLC)

Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 44 minutes. It was cancelled 0.0% of the time.

On-time arrivals
82.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
44 min
Flights arriving 15+ minutes late
Flights tracked
50
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 58%
  • Airline (crew, maintenance, cleaning) 29%
  • Air traffic control & airport 11%
  • Extreme weather 2%
  • Security 0%

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

Chicago (MDW) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 37% of the time, and when it is late the delay averages 62 minutes. It was cancelled 2.0% of the time.

On-time arrivals
63.3%
Less than 15 minutes late
Cancelled
2.0%
Of scheduled flights
Average delay when late
62 min
Flights arriving 15+ minutes late
Flights tracked
50
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 49%
  • Air traffic control & airport 27%
  • Airline (crew, maintenance, cleaning) 24%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Minneapolis (MSP)

Historically, this flight arrives 15+ minutes late 51% of the time, and when it is late the delay averages 39 minutes. It was cancelled 0.0% of the time.

On-time arrivals
48.6%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
39 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 49%
  • Late-arriving aircraft 42%
  • Air traffic control & airport 9%
  • Extreme weather 0%
  • Security 0%

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

Colorado Springs (COS) to Houston (HOU)

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

On-time arrivals
84.8%
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

  • Late-arriving aircraft 44%
  • Air traffic control & airport 33%
  • Airline (crew, maintenance, cleaning) 23%
  • Extreme weather 0%
  • Security 0%

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

Orlando (MCO) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.

On-time arrivals
85.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
28
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 70%
  • Air traffic control & airport 30%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Dallas (DAL) to St Louis (STL)

Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.

On-time arrivals
85.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
27
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 84%
  • Airline (crew, maintenance, cleaning) 15%
  • Air traffic control & airport 2%
  • Extreme weather 0%
  • Security 0%

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

Baltimore (BWI) to Cleveland (CLE)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 92 minutes. It was cancelled 0.0% of the time.

On-time arrivals
86.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
92 min
Flights arriving 15+ minutes late
Flights tracked
22
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 84%
  • Airline (crew, maintenance, cleaning) 16%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Burbank (BUR) to Oakland (OAK)

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

San Jose (SJC) to San Diego (SAN)

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
28 min
Flights arriving 15+ minutes late
Flights tracked
12
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).

BNA → PBI

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

Santa Ana (SNA) to Las Vegas (LAS)

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

On-time arrivals
87.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
96 min
Flights arriving 15+ minutes late
Flights tracked
8
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 86%
  • Air traffic control & airport 14%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Houston (HOU) to Albuquerque (ABQ)

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
21 min
Flights arriving 15+ minutes late
Flights tracked
5
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).

Houston (HOU) to Oakland (OAK)

Only 5 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
5
Scheduled flights in the period

Austin (AUS) to Pensacola (PNS)

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

Los Angeles (LAX) to Reno (RNO)

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

What caused the delays

  • Late-arriving aircraft 70%
  • Airline (crew, maintenance, cleaning) 30%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Pensacola (PNS) to St Louis (STL)

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

What caused the delays

  • Air traffic control & airport 52%
  • Late-arriving aircraft 48%
  • Airline (crew, maintenance, cleaning) 0%
  • Extreme weather 0%
  • Security 0%

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

Honolulu, Oahu (HNL) to Lihue, Kauai (LIH)

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

Houston (HOU) to Jacksonville (JAX)

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

Phoenix (PHX) 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 100.0% 21
October 2025 84.6% 26
November 2025 84.2% 19
December 2025 87.5% 8
January 2026 88.9% 45
February 2026 79.4% 34
March 2026 84.8% 33
April 2026 61.5% 27
May 2026 73.1% 26
June 2026 50.0% 19
July 2026 55.0% 20
August 2026 64.7% 34

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.