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Flight Reliability

WN 3278 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 3278 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

78%
Arrive within 15 minutes
6 min
Average arrival delay
0.6%
Cancelled
4 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon67%(55 flights)
  • Tue77%(39 flights)
  • Wed78%(41 flights)
  • Thu86%(63 flights)
  • Fri73%(60 flights)
  • Sat78%(49 flights)
  • Sun85%(53 flights)
On-time by departure window
  • 3–6 AM100%(18 flights)
  • 6–9 AM90%(151 flights)
  • 9 AM–12 PM78%(63 flights)
  • 12–3 PM82%(11 flights)
  • 3–6 PM65%(51 flights)
  • 6–9 PM53%(66 flights)
On-time trend by month
68%
May

Jun 92% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%13
July 202585%13
August 202597%29
September 2025100%30
October 202557%85
November 202589%27
December 202596%22
February 202692%13
March 202665%26
April 202687%46
May 202668%53
Departures on time
74%
Diverted
0%
Flights flown
360
Months covered
12

Keep nerding

Based on 362 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.