Denver Broncos games have sold-out since like forever ago (1970 to be exact), so really the only way to go is to get lucky and have someone give you tickets, or pay a ton on one of those after market websites. But there is also this...
Single-game tickets for the eight regular-season and two preseason games at Broncos Stadium at Mile High will go on sale at 10 a.m. Wednesday. There aren't many, but there are some.
Better yet, there are 2,000 half-priced tickets for each game in compliance with the legislation to build the stadium. No multiple-game purchases of half-priced tickets are allowed.
Fans seeking half-priced tickets must pre-register through Ticketmaster’s Verified Fan program by 10 p.m. Monday.
Full-price, half-price, Americans With Disability Act and club tickets will be available at various prices through Ticketmaster. There is a limit of four tickets per household per game.