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Flight Reliability

WN 2840 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 2840 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

70%
Arrive within 15 minutes
9 min
Average arrival delay
0.3%
Cancelled
1 min
Median arrival delay

Based on 314 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(46 flights)
  • Tue76%(42 flights)
  • Wed81%(41 flights)
  • Thu67%(43 flights)
  • Fri64%(44 flights)
  • Sat87%(46 flights)
  • Sun44%(50 flights)
On-time by departure window
  • 6–9 AM97%(31 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM90%(86 flights)
  • 3–6 PM57%(173 flights)
  • 6–9 PM47%(17 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
29%
May

Jun 75% → May 29% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%28
July 202548%25
August 202591%32
September 202593%30
October 202576%29
November 202577%17
December 202573%33
January 202678%27
February 202682%27
April 202652%25
May 202629%31
Departures on time
70%
Diverted
0.3%
Flights flown
312
Months covered
12

Keep nerding

Based on 314 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.