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Flight Reliability

WN 1677 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1677 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

79%
Arrive within 15 minutes
4 min
Average arrival delay
1.1%
Cancelled
3 min early
Median arrival delay

Based on 474 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(75 flights)
  • Tue76%(46 flights)
  • Wed64%(47 flights)
  • Thu78%(77 flights)
  • Fri84%(79 flights)
  • Sat80%(55 flights)
  • Sun83%(89 flights)
On-time by departure window
  • 3–6 AM90%(52 flights)
  • 6–9 AM91%(102 flights)
  • 9 AM–12 PM79%(102 flights)
  • 12–3 PM75%(44 flights)
  • 3–6 PM77%(86 flights)
  • 6–9 PM62%(82 flights)
On-time trend by month
68%
May

Jun 87% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202583%30
August 202586%29
September 202579%29
October 202591%22
November 202580%83
December 202567%61
January 202690%41
February 202675%36
March 202686%43
April 202670%33
May 202668%31
Departures on time
73%
Diverted
0.2%
Flights flown
468
Months covered
12

Keep nerding

Based on 474 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.