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Flight Reliability

WN 2278 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2278 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
9 min
Average arrival delay
1.2%
Cancelled
1 min
Median arrival delay

Based on 490 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(65 flights)
  • Tue80%(93 flights)
  • Wed82%(90 flights)
  • Thu77%(60 flights)
  • Fri75%(67 flights)
  • Sat94%(46 flights)
  • Sun58%(62 flights)
On-time by departure window
  • 3–6 AM97%(39 flights)
  • 6–9 AM94%(64 flights)
  • 9 AM–12 PM84%(125 flights)
  • 12–3 PM64%(139 flights)
  • 3–6 PM75%(94 flights)
  • 6–9 PM42%(12 flights)
  • 9 PM–12 AM40%(10 flights)
On-time trend by month
85%
May

Jun 69% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%16
July 202569%16
August 202588%34
September 202594%35
October 202579%19
November 202571%66
December 202585%73
January 202672%36
February 202676%25
March 202645%31
April 202670%64
May 202685%68
Departures on time
70%
Diverted
0.2%
Flights flown
483
Months covered
12

Keep nerding

Based on 490 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.