I find that Expedia usually has the best deals for Las Vegas. Try EVERYTHING when you search. There a HUGE difference whether you depart on a Sunday or on a Monday...even larger differences for weekends. The 2nd or 3rd week of April is usually the cheapest for Vegas - I don't know why, but people say this is Vegas' "downtime". I went during that time last year, and it's SORT OF dead...but you know Vegas, it's never completely dead

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