WN1555

WN1555 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Burbank to San Jose. Of 607 departures recorded from October 2024 to July 2026, 77.5% 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 periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January4930▼ 38.8%
February3228▼ 12.5%
March3231▼ 3.1%
April309▼ 70.0%
May315▼ 83.9%
June3622▼ 38.9%
July4126▼ 36.6%
August31––
September30––
October26–in progress
November28––
December29––
Year to date (Jan–Jul)251151▼ 39.8%

according to the US BTS · October 2024 → July 2026

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 periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January73.9%70.0%▼ 5.3%
February75.0%60.7%▼ 19.1%
March78.1%90.3%▲ 15.6%
April93.3%77.8%▼ 16.7%
May96.8%0.0%▼ 100.0%
June77.8%31.8%▼ 59.1%
July92.7%38.5%▼ 58.5%
August90.3%––
September86.7%––
October96.0%–in progress
November78.6%––
December58.6%––
Year-to-date average (Jan–Jul)83.9%52.7%▼ 37.2%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January30▼ 100.0%
February00–
March00–
April00–
May00–
June00–
July00–
August0––
September0––
October1–in progress
November0––
December0––
Year to date (Jan–Jul)30▼ 100.0%

according to the US BTS · October 2024 → July 2026

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 99.3% 603
  • Cancelled 0.7% 4

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026

On time, leg by leg

  1. BUR–SJC74 86.5%
  2. CMH–DEN58 96.6%
  3. BUR–PHX58 87.9%
  4. LAS–SAT53 62.3%
  5. MCI–LAS46 69.6%
  6. STL–RSW33 93.9%
  7. DAL–PHX33 87.9%

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

Legs flown under this number

7
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 22 22 86.4% 0
November 2024 14 14 92.9% 0
December 2024 25 25 84.0% 0
January 2025 49 46 73.9% 3
February 2025 32 32 75.0% 0
March 2025 32 32 78.1% 0
April 2025 30 30 93.3% 0
May 2025 31 31 96.8% 0
June 2025 36 36 77.8% 0
July 2025 41 41 92.7% 0
August 2025 31 31 90.3% 0
September 2025 30 30 86.7% 0
October 2025 26 25 96.0% 1
November 2025 28 28 78.6% 0
December 2025 29 29 58.6% 0
January 2026 30 30 70.0% 0
February 2026 28 28 60.7% 0
March 2026 31 31 90.3% 0
April 2026 9 9 77.8% 0
May 2026 5 5 0.0% 0
June 2026 22 22 31.8% 0
July 2026 26 26 38.5% 0

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