You won't be all by yourself at Las Vegas' McCarran Airport on Independence Day this year.
On the contrary, with a staggering 11,423,852 arrivals (and just 1,485,948 departures!), the airport is pitted to be the most crowded in the US, according to a study by travel startup Hopper, which collated stats on more than 1 billion booked flights and more than 10 million flights passengers have searched for.
Here's an animated map showing the anticipated flow of airport traffic, on a scale of blue to red, courtesy of Hopper. The bluer an airport, the calmer it will be; red means it's hella packed.
Other airports to avoid if you're booking a last-minute ticket for the Fourth of July include (in order of their popularity): Los Angeles International Airport (expected to have more than 5.6 million arrivals); Hartsfield–Jackson Atlanta International Airport (more than 5 million departures and over 4 million arrivals); Chicago O'Hare Airport and Denver (expected to have more than 4 million departures and arrivals apiece).