DENVER (KDVR) -- Saturday is a Pinpoint Weather Alert Day as dense fog and snow move into Denver weather. After dense fog and snow flurries were seen at the Denver International Airport on Saturday morning, hundreds of flights have been delayed and dozens have been canceled. This Colorado area is expected to see the most snow this weekend According to online flight tracker FlightAware, as of 3:45 p.m., there are 619 flights delayed and 39 canceled coming in and out of the Denver International Airport. These airlines had the most delayed flights: Southwest: 175 United: 171 SkyWest: 135 Frontier: 16 Delta: 13 Here is a breakdown of the canceled flights by airline: SkyWest: 21 UnitedL 12 Southwest: 5 Frontier: 1 According to FlightAware's Misery Map, the Denver airport has the most canceled flights of any airport in the U.S. on Saturday. The delayed and canceled flights have been steadily climbing all day. Travelers can check the status of their flight through their airline or by entering flight information on FlightAware. Expect delays due to winter driving conditions, heavy traffic on I-70 FOX31's Gabby Easterwood was live at the airport Saturday morning with a look at conditions. Dense fog made for limited visibility, and snow flurries were accumulating on the ground. Some roads were even slick, so travelers may want to plan for extra time to take it slow on the drive to the airport. Fog is expected to clear out as the day continues and snow is expected to start falling in the afternoon.