Almost a week into the government shutdown, operations at Boston's Logan International Airport appear to be holding up. On Oct. 1, the federal government shut down as lawmakers failed to reach an agreement over funding, causing some services to close temporarily. Days later, the shutdown is still in effect.

Concerns over flight delays and missed paychecks due to the US government shutdown escalated Wednesday, as senators rejected yet another bid to end the standoff.

But staffing shortages and flight delays triggered a social media spat between Gov. Gavin Newsom and U.S. Transportation Secretary Sean Duffy, and signaled potential for more widespread disruption as...