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Flight Reliability

WN 1874 · Southwest Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and WN 1874 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

71%
Arrive within 15 minutes
12 min
Average arrival delay
0.2%
Cancelled
2 min
Median arrival delay

Based on 416 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon69%(71 flights)
  • Tue76%(59 flights)
  • Wed89%(54 flights)
  • Thu70%(66 flights)
  • Fri67%(70 flights)
  • Sat66%(38 flights)
  • Sun59%(56 flights)
On-time by departure window
  • 6–9 AM95%(41 flights)
  • 9 AM–12 PM71%(51 flights)
  • 12–3 PM58%(62 flights)
  • 3–6 PM73%(120 flights)
  • 6–9 PM65%(116 flights)
  • 9 PM–12 AM79%(24 flights)
On-time trend by month
71%
May

Jun 57% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%42
July 202555%42
August 202576%25
September 202586%22
October 202577%26
November 202584%32
December 202580%49
January 202685%40
February 202661%43
March 202653%32
April 202677%30
May 202671%31
Departures on time
66%
Diverted
0.2%
Flights flown
414
Months covered
12

Keep nerding

Based on 416 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.