The cheapest month to go Vegas is January. Las Vegas holidays in January are typically cheaper than holidays in other months, as it's considered the off-peak season.
If you're looking for a bargain holiday, Las Vegas in January is definitely worth considering. However, it's important to note that the weather in Las Vegas can be quite cold in January, so be sure to pack warm clothes!
Las Vegas holidays in February are also typically cheaper than holidays in other months. However, the weather in Las Vegas is usually milder in February, making it a better time to visit if you're looking for a bargain holiday.