Nearly 700 flights across airlines were delayed or canceled at Denver International Airport on Sunday.
As of 2 p.m. Sunday, 647 flights had been delayed, and another 24 were canceled for weather-related reasons, according to .
On Saturday, 910 flights were delayed and 88 were canceled.
Affected airlines include SkyWest, United, Southwest, Frontier, Mesa, Delta, Southern Airways Express, JetBlue, Key Lime Air, CommuteAir, American Airlines, Volaris and Air Canada.
Regional airline SkyWest, the airline that operates United Express, had the most cancelations Sunday with 11 flights canceled. Frontier was second with four flights canceled, and United and Southwest took third with three flights canceled each.
Southwest and United had the most delays Sunday, with 257 Southwest flights and 185 United flights failing to leave the gate on time.
