There is almost always something going on in Vegas. The following are popular weekends and conventions during which you may want to book way ahead of time or pay a premium for staying:
CES or Consumer Electronics Show
First week in January.
MAGIC or Mens Apparel Guild Third week of February.
NASCAR In March.
ShoWest, a movie theatre convention Either first or second week of March.
National Association of Broadcasters First week of April.
Memorial Day Weekend End of May.
MAGIC again Usually third week in August.
Labor Day Weekend The first Monday in September, so the preceding weekend.
Columbus Day Weekend Second Monday in October, so the preceding weekend.
Veterans Day Weekend Celebrated on November 11, Vegas will be busier the weekend before if it is during the week.
NFR or National Finals Rodeo Early December and hugely popular. Many hotels may be filled.