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Flight Reliability

WN 455 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 455 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

79%
Arrive within 15 minutes
7 min
Average arrival delay
0.5%
Cancelled
4 min early
Median arrival delay

Based on 378 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(56 flights)
  • Tue91%(56 flights)
  • Wed84%(56 flights)
  • Thu68%(57 flights)
  • Fri78%(55 flights)
  • Sat77%(48 flights)
  • Sun73%(48 flights)
On-time by departure window
  • 3–6 AM94%(34 flights)
  • 6–9 AM90%(95 flights)
  • 9 AM–12 PM77%(61 flights)
  • 12–3 PM76%(50 flights)
  • 3–6 PM75%(56 flights)
  • 6–9 PM64%(67 flights)
  • 9 PM–12 AM69%(13 flights)
On-time trend by month
85%
May

Jun 90% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202597%31
August 202574%34
September 202582%34
October 202573%52
November 202570%27
December 202570%27
January 202677%30
February 202693%27
March 202658%31
April 202682%27
May 202685%26
Departures on time
76%
Diverted
0%
Flights flown
376
Months covered
12

Keep nerding

Based on 378 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.