Boise State has been on a roll of late by being able to land home-and-home games from the big boy leagues, and their latest addition is Oklahoma State. The two sides will play in 2018 in Stillwater and then the 2021 game will be in Boise. The 2018 game will be the first-ever meeting between the two schools, barring any meet up in the post season from now until then.
In addition to the Oklahoma State series, the Broncos have a home-and-home games scheduled with Florida State, Virginia, Washington, Michigan State UL Lafayette, Troy and Washington State.
There have been some talks that Boise State has secured more high profile teams due to home games being on ESPN, and that might play a factor but I am not buying it.
When the Broncos were in the WAC they were a staple on ESPN, and just over the past two years their presence on the World Wide Leader has been limited to road non-conference games. Whatever the reason it is good for Boise State to get more high profile games.
Their 2018 non-conference schedule is now set, unless they want a fifth non-league game since they go to Hawai'i that year:
09/01 - at Troy
09/08 - Connecticut
09/15 - at Oklahoma State
10/20 - BYU
Here is there 2021 non-conference slate so far:
09/18 - Oklahoma State
10/09 - at BYU