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Flight Reliability

WN 279 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 279 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

76%
Arrive within 15 minutes
10 min
Average arrival delay
1.2%
Cancelled
3 min early
Median arrival delay

Based on 496 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(81 flights)
  • Tue77%(60 flights)
  • Wed82%(62 flights)
  • Thu71%(83 flights)
  • Fri66%(83 flights)
  • Sat78%(67 flights)
  • Sun76%(53 flights)
On-time by departure window
  • 3–6 AM86%(22 flights)
  • 6–9 AM92%(65 flights)
  • 9 AM–12 PM88%(24 flights)
  • 12–3 PM77%(212 flights)
  • 3–6 PM65%(105 flights)
  • 6–9 PM62%(61 flights)
On-time trend by month
58%
May

Jun 74% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%42
July 202556%43
August 202583%66
September 202568%68
October 202587%55
November 202584%32
December 202580%35
January 202689%35
February 202679%24
March 202672%29
April 202676%29
May 202658%31
Departures on time
72%
Diverted
0.2%
Flights flown
489
Months covered
12

Keep nerding

Based on 496 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.