Denver International Airport is the king of airport Wi-Fi, logging the fastest Wi-Fi speeds among the nation’s 20 busiest airports, internet speed-test company Ookla said Wednesday. DIA’s speed was — drumroll, please — 61.74 megabits per second! And bonus — it’s free. The slowest was Hartsfield-Jackson Atlanta International Airport, coming in at a measly 2.71 mbps. OoklaSpeedtest site Ookla ranked Denver International Airport as having the fastest Wi-Fi speeds among the nation’s top 20 busiest airports.