WN444

WN444 (Southwest Airlines) is a multi-stop service on 43 routes, busiest San Diego to Nashville. Of 882 departures recorded from October 2024 to July 2026, 68.2% 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
January3441▲ 20.6%
February2844▲ 57.1%
March8537▼ 56.5%
April4149▲ 19.5%
May2652▲ 100.0%
June5433▼ 38.9%
July5524▼ 56.4%
August42––
September39––
October31–in progress
November30––
December31––
Year to date (Jan–Jul)323280▼ 13.3%

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
January84.9%79.5%▼ 6.3%
February89.3%63.6%▼ 28.7%
March67.1%56.8%▼ 15.4%
April75.6%59.2%▼ 21.7%
May46.2%48.1%▲ 4.2%
June55.6%39.4%▼ 29.1%
July47.3%52.2%▲ 10.4%
August78.1%––
September82.1%––
October90.3%–in progress
November76.7%––
December70.0%––
Year-to-date average (Jan–Jul)66.5%57.0%▼ 14.4%

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
January12▲ 100.0%
February00–
March00–
April00–
May00–
June00–
July01–
August1––
September0––
October0–in progress
November0––
December1––
Year to date (Jan–Jul)13▲ 200.0%

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 99.2% 875
  • Cancelled 0.8% 7

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

On time, leg by leg

  1. SAN–BNA60 66.1%
  2. SAN–OAK58 74.1%
  3. AUS–SAN58 53.5%
  4. MSY–PHX50 58.0%
  5. DEN–OAK49 83.7%
  6. DCA–AUS42 47.6%
  7. BUR–LAS42 92.9%
  8. ATL–RDU42 58.5%

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

Legs flown under this number

12
12 of 12
RoutesDistance (km)Avg delay On timeDepartures
SAN BNA San Diego International Airport – Nashville International Airport 2,812 18.4 min 66.1% 60
SAN OAK San Diego International Airport – Oakland San Francisco Bay Airport 718 11.7 min 74.1% 58
AUS SAN Austin Bergstrom International Airport – San Diego International Airport 1,871 30.2 min 53.5% 58
MSY PHX Louis Armstrong New Orleans International Airport – Phoenix Sky Harbor International Airport 2,088 34.9 min 58.0% 50
DEN OAK Denver International Airport – Oakland San Francisco Bay Airport 1,537 13.7 min 83.7% 49
DCA AUS Ronald Reagan Washington National Airport – Austin Bergstrom International Airport 2,114 33.1 min 47.6% 42
BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport 359 0.9 min 92.9% 42
ATL RDU Hartsfield Jackson Atlanta International Airport – Raleigh-Durham International Airport 572 32.8 min 58.5% 42
MDW ATL Chicago Midway International Airport – Hartsfield Jackson Atlanta International Airport 952 17.1 min 75.0% 36
RDU DEN Raleigh-Durham International Airport – Denver International Airport 2,307 51.9 min 22.9% 35
AUS ECP Austin Bergstrom International Airport – Northwest Florida Beaches International Airport 1,139 22.1 min 54.6% 33
ATL MDW Hartsfield Jackson Atlanta International Airport – Chicago Midway International Airport 952 3.3 min 90.3% 31
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 75.0% 0
November 2024 39 39 97.4% 0
December 2024 47 46 87.0% 1
January 2025 34 33 84.9% 1
February 2025 28 28 89.3% 0
March 2025 85 85 67.1% 0
April 2025 41 41 75.6% 0
May 2025 26 26 46.2% 0
June 2025 54 54 55.6% 0
July 2025 55 55 47.3% 0
August 2025 42 41 78.1% 1
September 2025 39 39 82.1% 0
October 2025 31 31 90.3% 0
November 2025 30 30 76.7% 0
December 2025 31 30 70.0% 1
January 2026 41 39 79.5% 2
February 2026 44 44 63.6% 0
March 2026 37 37 56.8% 0
April 2026 49 49 59.2% 0
May 2026 52 52 48.1% 0
June 2026 33 33 39.4% 0
July 2026 24 23 52.2% 1

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