Skip to content
WanderNerd
Check a flight

Flight Reliability

WN 1355 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1355 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
6 min
Average arrival delay
0.2%
Cancelled
3 min early
Median arrival delay

Based on 457 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(67 flights)
  • Tue85%(58 flights)
  • Wed88%(59 flights)
  • Thu72%(71 flights)
  • Fri89%(73 flights)
  • Sat81%(59 flights)
  • Sun71%(68 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM87%(154 flights)
  • 9 AM–12 PM88%(50 flights)
  • 12–3 PM79%(72 flights)
  • 3–6 PM72%(133 flights)
  • 6–9 PM69%(35 flights)
  • 9 PM–12 AM—(9 flights)
On-time trend by month
84%
May

Jun 85% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%34
July 202584%37
August 202591%32
September 202597%30
October 202584%32
November 202581%53
December 202577%51
January 202663%32
February 202655%38
March 202675%32
April 202683%40
May 202684%44
Departures on time
77%
Diverted
0.2%
Flights flown
455
Months covered
12

Keep nerding

Based on 457 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.