OnTimeRoutes
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Southwest Airlines ATL to BWI on-time performance

Southwest Airlines nonstop flights from Atlanta to Baltimore · Aug 2025 – Jul 2026

On-time arrivals
78%
arrived < 15 min late
Cancelled
1.9%
29 flights
Avg arrival delay
15 min
60 min when late
Rank on route
#3 of 4
route average 76% on time

Key facts

  • Southwest Airlines flights on ATL to BWI arrived on time 78% of the time in Aug 2025 – Jul 2026.
  • 1.9% were cancelled, and 7% arrived an hour or more late.
  • That ranks #3 of 4 airlines on this route, which averaged 76% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (47%).

On-time trend by month

40%70%100%July 2025: 68.9% on time, 6.9% cancelledJul ’25August 2025: 81.4% on time, 2.1% cancelledAug ’25September 2025: 89.4% on time, 0.0% cancelledSep ’25October 2025: 84.4% on time, 0.0% cancelledOct ’25November 2025: 85.4% on time, 2.3% cancelledNov ’25December 2025: 69.1% on time, 0.7% cancelledDec ’25January 2026: 87.1% on time, 5.7% cancelledJan ’26February 2026: 80.0% on time, 1.9% cancelledFeb ’26March 2026: 74.8% on time, 4.2% cancelledMar ’26April 2026: 84.7% on time, 0.8% cancelledApr ’26May 2026: 71.5% on time, 0.0% cancelledMay ’26June 2026: 68.5% on time, 0.8% cancelledJun ’26July 2026: 59.8% on time, 4.3% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft47%
  • Airline (crew, maintenance, cleaning, fueling)34%
  • Air traffic control & airport congestion16%
  • Extreme weather2%
  • Security0%

Other airlines on ATL to BWI

Full ATL to BWI comparison →
Southwest Airlines on-time record across all routes →

1,562 Southwest Airlines flights tracked on this route; 29 cancelled, 9 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.