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Flight Reliability

WN 2878 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2878 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

77%
Arrive within 15 minutes
11 min
Average arrival delay
0.8%
Cancelled
3 min early
Median arrival delay

Based on 380 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue90%(62 flights)
  • Wed80%(61 flights)
  • Thu80%(46 flights)
  • Fri70%(47 flights)
  • Sat74%(49 flights)
  • Sun62%(60 flights)
On-time by departure window
  • 6–9 AM98%(45 flights)
  • 9 AM–12 PM90%(72 flights)
  • 12–3 PM58%(43 flights)
  • 3–6 PM80%(96 flights)
  • 6–9 PM68%(112 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
77%
Apr

Jun 68% → Apr 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%44
July 202579%48
August 202570%33
September 202573%30
October 202593%29
November 202580%30
December 202585%40
January 202677%35
February 202686%21
March 202676%42
April 202677%17
Departures on time
74%
Diverted
0%
Flights flown
377
Months covered
12

Keep nerding

Based on 380 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.