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Flight WN3399

Southwest Airlines flight WN3399

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Looking for WN3399 in the air…

Las Vegas (LAS) to Albuquerque (ABQ)

Historically, this flight arrives 15+ minutes late 43% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.

On-time arrivals
57.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
42
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 72%
  • Airline (crew, maintenance, cleaning) 19%
  • Air traffic control & airport 10%
  • Extreme weather 0%
  • Security 0%

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

Burbank (BUR) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 36% of the time, and when it is late the delay averages 60 minutes. It was cancelled 0.0% of the time.

On-time arrivals
64.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
60 min
Flights arriving 15+ minutes late
Flights tracked
39
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 52%
  • Late-arriving aircraft 29%
  • Airline (crew, maintenance, cleaning) 18%
  • Extreme weather 1%
  • Security 0%

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

Austin (AUS) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 40 minutes. It was cancelled 2.8% of the time.

On-time arrivals
65.7%
Less than 15 minutes late
Cancelled
2.8%
Of scheduled flights
Average delay when late
40 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Airline (crew, maintenance, cleaning) 22%
  • Air traffic control & airport 12%
  • Extreme weather 0%
  • Security 0%

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

Milwaukee (MKE) to Fort Myers (RSW)

Historically, this flight arrives 15+ minutes late 40% of the time, and when it is late the delay averages 56 minutes. It was cancelled 6.1% of the time.

On-time arrivals
60.0%
Less than 15 minutes late
Cancelled
6.1%
Of scheduled flights
Average delay when late
56 min
Flights arriving 15+ minutes late
Flights tracked
33
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 45%
  • Late-arriving aircraft 41%
  • Air traffic control & airport 14%
  • 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 62% of the time, and when it is late the delay averages 56 minutes. It was cancelled 0.0% of the time.

On-time arrivals
37.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
56 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 72%
  • Air traffic control & airport 19%
  • Airline (crew, maintenance, cleaning) 6%
  • Extreme weather 4%
  • Security 0%

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

Boston (BOS) to St Louis (STL)

Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 57 minutes. It was cancelled 0.0% of the time.

On-time arrivals
95.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
57 min
Flights arriving 15+ minutes late
Flights tracked
24
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).

St Louis (STL) to Los Angeles (LAX)

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

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
7.1%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
14
Scheduled flights in the period

Raleigh/Durham (RDU) to Phoenix (PHX)

Only 3 flights on record, which is too few for reliable odds.

On-time arrivals
66.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
25 min
Flights arriving 15+ minutes late
Flights tracked
3
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 80%
  • Airline (crew, maintenance, cleaning) 20%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

ISP → PBI

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
95 min
Flights arriving 15+ minutes late
Flights tracked
1
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 83%
  • Airline (crew, maintenance, cleaning) 14%
  • Air traffic control & airport 3%
  • Extreme weather 0%
  • Security 0%

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

In the news

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On-time arrivals by month
Nov 2025 Aug 2026
Show as table
MonthOn timeFlights
November 2025 90.0% 10
December 2025 92.9% 14
January 2026 100.0% 1
February 2026 66.7% 3
March 2026 62.5% 27
April 2026 64.0% 50
May 2026 44.6% 56
June 2026 65.0% 21
July 2026 72.2% 18
August 2026 93.3% 16

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.