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Flight Reliability

WN 2978 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2978 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

84%
Arrive within 15 minutes
1 min
Average arrival delay
0.6%
Cancelled
7 min early
Median arrival delay

Based on 358 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(53 flights)
  • Tue74%(58 flights)
  • Wed85%(59 flights)
  • Thu89%(52 flights)
  • Fri95%(55 flights)
  • Sat88%(41 flights)
  • Sun78%(37 flights)
On-time by departure window
  • 3–6 AM100%(13 flights)
  • 6–9 AM96%(107 flights)
  • 9 AM–12 PM81%(113 flights)
  • 12–3 PM66%(62 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM84%(55 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
100%
May

Jun 77% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%43
July 202576%55
August 202577%30
September 202590%30
October 202590%30
November 202593%27
December 202597%30
January 202676%21
February 202667%12
March 202677%26
April 202688%25
May 2026100%26
Departures on time
83%
Diverted
0.3%
Flights flown
355
Months covered
12

Keep nerding

Based on 358 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.