WN1917

WN1917 (Southwest Airlines) is a multi-stop service on 37 routes, busiest San Antonio to Las Vegas. Of 659 departures recorded from October 2024 to July 2026, 79.9% left on time, according to the US BTS.

Recorded departures by month

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

Months without data are left blank.

The most recent periods18 periods
PeriodDepartures 2025Departures 2026Change vs last year
January1924▲ 26.3%
February2519▼ 24.0%
March5411▼ 79.6%
April3426▼ 23.5%
May2831▲ 10.7%
June318▲ 500.0%
July–17–
August78––
September91––
October53–in progress
November24––
December28––

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

Months without data are left blank.

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

The most recent periods18 periods
PeriodOn time 2025On time 2026Change vs last year
January100.0%56.5%▼ 43.5%
February100.0%84.2%▼ 15.8%
March87.0%36.4%▼ 58.2%
April82.4%84.6%▲ 2.8%
May96.4%63.3%▼ 34.3%
June100.0%72.2%▼ 27.8%
July–52.9%–
August85.9%––
September82.0%––
October69.8%–in progress
November87.5%––
December46.4%––

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

Months without data are left blank.

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined

Months without data are left blank.

The most recent periods18 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January01–
February00–
March00–
April00–
May01–
June00–
July–0–
August0––
September2––
October0–in progress
November0––
December0––

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 99.4% 655
  • Cancelled 0.6% 4

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

On time, leg by leg

  1. SAT–LAS71 93.0%
  2. MCO–AUS58 71.9%
  3. PHX–BNA42 78.1%
  4. OMA–HOU42 95.2%
  5. LAS–OKC39 73.7%
  6. ATL–MCI33 90.9%
  7. SLC–MDW32 93.8%

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 20 20 90.0% 0
November 2024 35 35 94.3% 0
December 2024 21 21 76.2% 0
January 2025 19 19 100.0% 0
February 2025 25 25 100.0% 0
March 2025 54 54 87.0% 0
April 2025 34 34 82.4% 0
May 2025 28 28 96.4% 0
June 2025 3 3 100.0% 0
August 2025 78 78 85.9% 0
September 2025 91 89 82.0% 2
October 2025 53 53 69.8% 0
November 2025 24 24 87.5% 0
December 2025 28 28 46.4% 0
January 2026 24 23 56.5% 1
February 2026 19 19 84.2% 0
March 2026 11 11 36.4% 0
April 2026 26 26 84.6% 0
May 2026 31 30 63.3% 1
June 2026 18 18 72.2% 0
July 2026 17 17 52.9% 0

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