How often are DCA to STL flights on time?

Flights from Washington (DCA) to St. Louis (STL) arrive on time 82% of the time across 13,305 flights of official data.

Which airline is most reliable on the DCA to STL route?

Southwest Airlines has the best on-time record on this route at 82% across 7,518 flights.

Route reliability

Flights from Washington to St. Louis arrive on time 82% of the time across 13,305 flights. Here’s how each airline really performs.

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On-time rate

13,305 flights

Airline	On-time	Flights
Southwest Airlines	82%	7,518
American Airlines	80%	5,787

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

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