This article originally published at Flights canceled, delayed at airports across the country: Here's what to know for airline passengers in Connecticut. Transportation Secretary Sean Duffy said there will be a 10% reduction in flights at 40 airports, prompted by a historic government shutdown.

Delta Airlines said in an update that it expects the “vast majority” of its flights not to be affected by the government’s decision and go ahead as scheduled. While complying with the government directive by reducing its domestic flights, its international flights won’t be affected.

Alaska Airlines is SFO’s second-largest airline, with a 10.4% market share at the airport. The Alaska Air Group also owns Horizon Air, which code-shares with the airline. Alaska told SFGATE it has decided to cut flights from its most popular routes, but declined to comment on how the flight disruptions would directly impact passengers at SFO.