OnTimeRoutes
B

Southwest Airlines BHM to DEN on-time performance

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

On-time arrivals
78%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
14 min
56 min when late
Rank on route
#2 of 3
route average 83% on time

Key facts

  • Southwest Airlines flights on BHM to DEN arrived on time 78% of the time in Aug 2025 – Jul 2026.
  • 0% were cancelled, and 6% arrived an hour or more late.
  • That ranks #2 of 3 airlines on this route, which averaged 83% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (49%).

On-time trend by month

40%70%100%July 2025: 77.4% on time, 0.0% cancelledJul ’25August 2025: 83.9% on time, 0.0% cancelledAug ’25September 2025: 90.0% on time, 0.0% cancelledSep ’25October 2025: 93.5% on time, 0.0% cancelledOct ’25November 2025: 93.1% on time, 0.0% cancelledNov ’25December 2025: 67.7% on time, 0.0% cancelledDec ’25January 2026: 87.1% on time, 0.0% cancelledJan ’26February 2026: 100.0% on time, 0.0% cancelledFeb ’26March 2026: 70.4% on time, 0.0% cancelledMar ’26April 2026: 76.8% on time, 0.0% cancelledApr ’26May 2026: 82.1% on time, 0.0% cancelledMay ’26June 2026: 55.4% on time, 0.0% cancelledJun ’26July 2026: 67.2% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft49%
  • Air traffic control & airport congestion28%
  • Airline (crew, maintenance, cleaning, fueling)22%
  • Extreme weather2%
  • Security0%

Other airlines on BHM to DEN

491 Southwest Airlines flights tracked on this route; 0 cancelled, 0 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.