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Flight Reliability

WN 1284 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1284 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
0.7%
Cancelled
4 min early
Median arrival delay

Based on 417 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(60 flights)
  • Tue85%(72 flights)
  • Wed83%(70 flights)
  • Thu75%(59 flights)
  • Fri76%(59 flights)
  • Sat91%(43 flights)
  • Sun65%(51 flights)
On-time by departure window
  • 6–9 AM92%(48 flights)
  • 9 AM–12 PM79%(71 flights)
  • 12–3 PM86%(110 flights)
  • 3–6 PM78%(110 flights)
  • 6–9 PM65%(49 flights)
  • 9 PM–12 AM58%(26 flights)
On-time trend by month
86%
May

Jun 59% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%34
July 202585%41
August 202576%38
September 202581%42
October 202577%13
November 202572%29
December 202577%31
January 202696%27
February 202685%26
March 202678%46
April 202674%43
May 202686%44
Departures on time
76%
Diverted
0%
Flights flown
414
Months covered
12

Keep nerding

Based on 417 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.