MDW (Chicago) to IAD (Washington) flights arrive on time 58% of the time. The most reliable airline on this route is Southwest Airlines at 58%. The average delay is 22 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.MDW → IAD
MDW (Chicago) to IAD (Washington)
MDW → IAD on-time performance by month
24
JanFebMarAprMayJunJulAugSepOctNovDec
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This route is frequently delayed. About 58% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Accurate?
Good to know
Departing from MDW
78% on timeTSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at IAD
83% on timeWhen flights into IAD are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at IAD: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.