OnTimeRoutes
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Southwest Airlines LGA to DEN on-time performance

Southwest Airlines nonstop flights from New York to Denver · Aug 2025 – Jul 2026

On-time arrivals
62%
arrived < 15 min late
Cancelled
3.5%
52 flights
Avg arrival delay
25 min
61 min when late
Rank on route
#4 of 4
route average 71% on time

Key facts

  • Southwest Airlines flights on LGA to DEN arrived on time 62% of the time in Aug 2025 – Jul 2026.
  • 3.5% were cancelled, and 13% arrived an hour or more late.
  • That ranks #4 of 4 airlines on this route, which averaged 71% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (52%).

On-time trend by month

30%65%100%July 2025: 60.7% on time, 8.4% cancelledJul ’25August 2025: 66.4% on time, 0.0% cancelledAug ’25September 2025: 72.2% on time, 0.9% cancelledSep ’25October 2025: 58.0% on time, 2.6% cancelledOct ’25November 2025: 62.4% on time, 0.9% cancelledNov ’25December 2025: 52.6% on time, 2.5% cancelledDec ’25January 2026: 77.5% on time, 3.5% cancelledJan ’26February 2026: 63.9% on time, 6.7% cancelledFeb ’26March 2026: 48.1% on time, 5.8% cancelledMar ’26April 2026: 58.2% on time, 0.7% cancelledApr ’26May 2026: 66.2% on time, 3.7% cancelledMay ’26June 2026: 51.1% on time, 3.5% cancelledJun ’26July 2026: 65.6% on time, 9.6% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft52%
  • Air traffic control & airport congestion23%
  • Airline (crew, maintenance, cleaning, fueling)23%
  • Extreme weather2%
  • Security0%

Other airlines on LGA to DEN

Full LGA to DEN comparison →
Southwest Airlines on-time record across all routes →

1,494 Southwest Airlines flights tracked on this route; 52 cancelled, 7 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.