WN340

WN340 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Burbank to Las Vegas. Of 495 departures recorded from October 2024 to November 2025, 78.1% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods14 periods
PeriodDepartures 2024Departures 2025Change vs last year
January–67–
February–44–
March–35–
April–33–
May–36–
June–30–
July–32–
August–32–
September–30–
October4831▼ 35.4%
November382▼ 94.7%
December37––

according to the US BTS · October 2024 → November 2025

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods14 periods
PeriodOn time 2024On time 2025Change vs last year
January–77.6%–
February–72.1%–
March–91.4%–
April–78.8%–
May–77.8%–
June–80.0%–
July–90.6%–
August–87.5%–
September–80.0%–
October70.8%80.7%▲ 13.9%
November76.3%100.0%▲ 31.0%
December59.5%––

according to the US BTS · October 2024 → November 2025

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → November 2025

Cancelled departures by month

All legs combined
The most recent periods14 periods
PeriodCancelled 2024Cancelled 2025Change vs last year
January–0–
February–1–
March–0–
April–0–
May–0–
June–0–
July–0–
August–0–
September–0–
October00–
November00–
December0––

according to the US BTS · October 2024 → November 2025

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 99.8% 494
  • Cancelled 0.2% 1

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Nov 1, 2025

On time, leg by leg

  1. BUR–LAS73 81.9%
  2. STL–JAX57 82.5%
  3. BWI–BUF50 80.0%
  4. ATL–DAL34 76.5%
  5. ATL–GSP33 84.9%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

5
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 48 48 70.8% 0
November 2024 38 38 76.3% 0
December 2024 37 37 59.5% 0
January 2025 67 67 77.6% 0
February 2025 44 43 72.1% 1
March 2025 35 35 91.4% 0
April 2025 33 33 78.8% 0
May 2025 36 36 77.8% 0
June 2025 30 30 80.0% 0
July 2025 32 32 90.6% 0
August 2025 32 32 87.5% 0
September 2025 30 30 80.0% 0
October 2025 31 31 80.7% 0
November 2025 2 2 100.0% 0

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