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Flight Reliability

WN 1872 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1872 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

73%
Arrive within 15 minutes
13 min
Average arrival delay
1.3%
Cancelled
2 min early
Median arrival delay

Based on 388 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(56 flights)
  • Tue90%(62 flights)
  • Wed77%(60 flights)
  • Thu62%(52 flights)
  • Fri66%(53 flights)
  • Sat82%(45 flights)
  • Sun70%(54 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM96%(47 flights)
  • 9 AM–12 PM84%(94 flights)
  • 12–3 PM74%(90 flights)
  • 3–6 PM70%(47 flights)
  • 6–9 PM62%(65 flights)
  • 9 PM–12 AM30%(30 flights)
On-time trend by month
55%
May

Jun 61% → May 55% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%28
July 202559%29
August 202584%38
September 202587%39
October 202589%27
November 202562%26
December 202559%29
January 202694%35
February 202692%38
March 202663%32
April 202660%30
May 202655%31
Departures on time
67%
Diverted
0.3%
Flights flown
382
Months covered
12

Keep nerding

Based on 388 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.