How often are ATL to IAD flights on time?

Flights from Atlanta (ATL) to Washington (IAD) arrive on time 85% of the time across 22,407 flights of official data.

Which airline is most reliable on the ATL to IAD route?

Southwest Airlines has the best on-time record on this route at 90% across 1,864 flights.

Route reliability

Flights from Atlanta to Washington arrive on time 85% of the time across 22,407 flights. Here’s how each airline really performs.

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On-time rate

22,407 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg IAD → ATL.

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Do Morning Flights Really Have Fewer Delays?

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Are Some Airlines Really More Reliable Than Others?

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Score real ATL–IAD flights on reliability, weather, and connection safety — not just price.