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Flight Reliability

WN 2555 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2555 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

81%
Arrive within 15 minutes
2 min
Average arrival delay
1.2%
Cancelled
6 min early
Median arrival delay

Based on 336 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon75%(56 flights)
  • Tue85%(34 flights)
  • Wed88%(34 flights)
  • Thu82%(56 flights)
  • Fri83%(57 flights)
  • Sat80%(35 flights)
  • Sun77%(60 flights)
On-time by departure window
  • 3–6 AM95%(43 flights)
  • 6–9 AM95%(37 flights)
  • 9 AM–12 PM100%(13 flights)
  • 12–3 PM92%(13 flights)
  • 3–6 PM78%(111 flights)
  • 6–9 PM70%(115 flights)
On-time trend by month
67%
May

Jun 96% → May 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%26
July 202593%30
October 202596%25
November 202568%40
December 202562%34
January 202684%31
February 202694%18
March 202670%46
April 202697%38
May 202667%39
Departures on time
75%
Diverted
0%
Flights flown
332
Months covered
11

Keep nerding

Based on 336 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.