WN1850

WN1850 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Phoenix to San Diego. Of 686 departures recorded from October 2024 to July 2026, 68.5% 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 periods17 periods
PeriodDepartures 2025Departures 2026Change vs last year
January5427▼ 50.0%
February4424▼ 45.5%
March2831▲ 10.7%
April4330▼ 30.2%
May5331▼ 41.5%
June4241▼ 2.4%
July4542▼ 6.7%
August5––
September–––
October––in progress
November29––
December31––
Year to date (Jan–Jul)309226▼ 26.9%

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 periods17 periods
PeriodOn time 2025On time 2026Change vs last year
January79.6%76.9%▼ 3.4%
February93.2%62.5%▼ 32.9%
March75.0%74.2%▼ 1.1%
April67.4%63.3%▼ 6.1%
May79.3%51.6%▼ 34.9%
June78.6%41.5%▼ 47.2%
July51.1%48.8%▼ 4.6%
August40.0%––
September–––
October––in progress
November75.9%––
December56.7%––
Year-to-date average (Jan–Jul)74.9%59.8%▼ 20.1%

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 periods17 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January01–
February00–
March00–
April00–
May00–
June00–
July01–
August0––
September–––
October––in progress
November0––
December1––
Year to date (Jan–Jul)02

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 99.6% 683
  • Cancelled 0.4% 3

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

On time, leg by leg

  1. PHX–SAN66 86.4%
  2. DEN–IND64 65.1%
  3. LAS–OKC52 57.7%
  4. AUS–PHX50 69.4%
  5. FLL–BNA42 56.1%
  6. DEN–DAL42 45.2%
  7. HOU–MSY42 76.2%
  8. LAX–LAS41 63.4%

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 24 24 87.5% 0
November 2024 24 24 79.2% 0
December 2024 38 38 65.8% 0
January 2025 54 54 79.6% 0
February 2025 44 44 93.2% 0
March 2025 28 28 75.0% 0
April 2025 43 43 67.4% 0
May 2025 53 53 79.3% 0
June 2025 42 42 78.6% 0
July 2025 45 45 51.1% 0
August 2025 5 5 40.0% 0
November 2025 29 29 75.9% 0
December 2025 31 30 56.7% 1
January 2026 27 26 76.9% 1
February 2026 24 24 62.5% 0
March 2026 31 31 74.2% 0
April 2026 30 30 63.3% 0
May 2026 31 31 51.6% 0
June 2026 41 41 41.5% 0
July 2026 42 41 48.8% 1

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