Flights Halted at DC-Area Airports Due to Chemical Odor

Ground stop caused delays of up to 2 hours at major transportation hubs

Mar. 14, 2026 at 8:50pm

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Flights at four airports serving the Washington, DC, Baltimore, and Richmond, Virginia areas were grounded for over an hour on Friday evening due to a strong chemical smell that was impacting air traffic controllers. The ground stop, which prevented planes from landing, caused flight delays of up to 2 hours across the busy airports.

Why it matters

The disruption at these major transportation hubs affected thousands of travelers and highlighted the importance of air traffic control systems functioning properly to ensure safe and efficient air travel. The incident also raised questions about the source and potential safety implications of the chemical odor.

The details

The ground stop affected Ronald Reagan Washington National Airport, Washington Dulles International Airport, Baltimore-Washington International Airport, and Richmond International Airport. The smell was traced back to a circuit board that had overheated at the Potomac TRACON air traffic control facility, which manages the airspace for the DC, Baltimore, and Richmond-Charlottesville areas. Flights were able to depart the airports after 7pm ET on Friday, but the ground stop remained in place.

  • The ground stop was declared on Friday, March 14, 2026.
  • Flights were able to depart the affected airports after 7pm ET on Friday.

The players

Federal Aviation Administration

The U.S. government agency responsible for the regulation and oversight of civil aviation.

Potomac TRACON

The terminal radar approach control facility that manages air traffic for the DC, Baltimore, and Richmond-Charlottesville areas.

Sean Duffy

The U.S. Transportation Secretary who announced the ground stop on social media.

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What they’re saying

“The smell came from a circuit board that had overheated and since been replaced.”

— Sean Duffy, U.S. Transportation Secretary (Twitter)

What’s next

The FAA is investigating the cause of the chemical odor and the impact it had on air traffic control operations.

The takeaway

This incident highlights the critical role that air traffic control systems play in maintaining the safety and efficiency of air travel, and the need for robust backup systems and contingency plans to minimize disruptions when issues arise.