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Flight Reliability

WN 1863 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1863 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
4 min
Average arrival delay
0.3%
Cancelled
6 min early
Median arrival delay

Based on 326 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(44 flights)
  • Tue91%(54 flights)
  • Wed86%(56 flights)
  • Thu71%(44 flights)
  • Fri72%(39 flights)
  • Sat78%(32 flights)
  • Sun70%(56 flights)
On-time by departure window
  • 6–9 AM93%(86 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM82%(51 flights)
  • 3–6 PM68%(65 flights)
  • 6–9 PM67%(67 flights)
  • 9 PM–12 AM83%(52 flights)
On-time trend by month
59%
May

Jun 65% → May 59% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%23
July 202559%22
August 202575%36
September 202582%38
November 202590%38
December 202593%45
January 202681%32
February 202682%27
March 202682%27
April 202674%19
May 202659%17
Departures on time
75%
Diverted
0%
Flights flown
325
Months covered
12

Keep nerding

Based on 326 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.