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Flight Reliability

WN 2255 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2255 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

80%
Arrive within 15 minutes
3 min
Average arrival delay
0.6%
Cancelled
4 min early
Median arrival delay

Based on 335 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon82%(50 flights)
  • Tue71%(48 flights)
  • Wed75%(48 flights)
  • Thu86%(50 flights)
  • Fri84%(51 flights)
  • Sat80%(46 flights)
  • Sun82%(39 flights)
On-time by departure window
  • 6–9 AM88%(172 flights)
  • 9 AM–12 PM80%(54 flights)
  • 12–3 PM69%(67 flights)
  • 3–6 PM—(8 flights)
  • 6–9 PM56%(18 flights)
  • 9 PM–12 AM77%(13 flights)
On-time trend by month
61%
May

Jun 87% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%31
July 202584%31
August 202575%28
September 202577%26
October 202580%30
November 202577%26
December 202579%29
January 202690%31
February 2026100%28
March 202671%21
April 202674%23
May 202661%28
Departures on time
76%
Diverted
0.3%
Flights flown
332
Months covered
12

Keep nerding

Based on 335 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.