Protesters gathered for a second day at Dulles International Airport's international terminal to call for an end to President Trump's executive order banning refugees from entering the United States.
Hundreds also came to the Baltimore-Washington International Airport.
Protesters at both airports carried signs and chanted, "no hate, no fear, immigrants are welcome here."
On Sunday, social media reports said crowds at BWI were spilling out of the international terminal. Protesters held signs that read, "Welcome home," and "No Ban, No wall,'' among many others.
The demonstrations are among many at airports across the country in protest of an executive order signed Friday by President Donald Trump. The order blocks refugees from entering the United States for 120 days, and temporarily bans citizens from seven majority-Muslim countries from entry.
Earlier in the day, a massive protest took place outside the White House close to Lafayette Park. Hundreds of protesters then marched to the U.S. Capitol.