WN352

WN352 (Southwest Airlines) is a multi-stop service on 38 routes, busiest St Louis to San Francisco. Of 868 departures recorded from October 2024 to July 2026, 72.5% 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
January3427▼ 20.6%
February3127▼ 12.9%
March4043▲ 7.5%
April3233▲ 3.1%
May3031▲ 3.3%
June68680.0%
July8277▼ 6.1%
August34––
September30––
October31–in progress
November28––
December29––
Year to date (Jan–Jul)317306▼ 3.5%

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
January70.6%100.0%▲ 41.7%
February61.3%96.3%▲ 57.1%
March97.4%73.8%▼ 24.3%
April90.6%75.8%▼ 16.4%
May96.7%35.5%▼ 63.3%
June82.1%49.3%▼ 40.0%
July85.2%43.4%▼ 49.0%
August94.1%––
September90.0%––
October71.0%–in progress
November53.6%––
December72.4%––
Year-to-date average (Jan–Jul)83.4%67.7%▼ 18.8%

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
January00–
February00–
March110.0%
April00–
May00–
June110.0%
July110.0%
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)330.0%

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% 862
  • Cancelled 0.7% 6

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

On time, leg by leg

  1. STL–SFO110 55.5%
  2. ATL–DAL60 66.7%
  3. STL–RSW58 91.4%
  4. TPA–MCI57 50.9%
  5. BUR–HOU57 94.7%
  6. SJC–SAN53 98.1%
  7. HOU–TUS43 81.4%
  8. TUS–LAX42 76.2%

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

Legs flown under this number

10
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 26 26 88.5% 0
November 2024 32 32 68.8% 0
December 2024 35 35 40.0% 0
January 2025 34 34 70.6% 0
February 2025 31 31 61.3% 0
March 2025 40 39 97.4% 1
April 2025 32 32 90.6% 0
May 2025 30 30 96.7% 0
June 2025 68 67 82.1% 1
July 2025 82 81 85.2% 1
August 2025 34 34 94.1% 0
September 2025 30 30 90.0% 0
October 2025 31 31 71.0% 0
November 2025 28 28 53.6% 0
December 2025 29 29 72.4% 0
January 2026 27 27 100.0% 0
February 2026 27 27 96.3% 0
March 2026 43 42 73.8% 1
April 2026 33 33 75.8% 0
May 2026 31 31 35.5% 0
June 2026 68 67 49.3% 1
July 2026 77 76 43.4% 1

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