MDW (Chicago) to BWI (Baltimore) flights arrive on time 80% of the time. The most reliable airline on this route is Southwest Airlines at 81%. The average delay is 58 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.MDW → BWI
MDW (Chicago) to BWI (Baltimore)
MDW → BWI on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 80% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Southwest Airlines edges out Frontier Airlines on this route — 81% vs 71% on time.
Airline Comparison
Southwest Airlines leads at 81% on time; Frontier Airlines trails at 71%.
Accurate?
Good to know
Departing from MDW
78% on timeTSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at BWI
78% on timeWhen flights into BWI are late, the average delay is 58 minutes. Build buffer if you have ground plans.
If connecting at BWI: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated April 2026. Source: Bureau of Transportation Statistics.