Flagstaff Az to Boise Id

[legsnred]

Have to make a trip to Boise Id and wondering about which way is best. Flagstaff up 89 thru Utah and if so how far on 89 till cut over to I-15 or Flagstaff to Las Vegas and up 93 to Twin Falls.

[obgraham]

Tossup. Decide which you prefer, Vegas traffic or Salt Lake traffic.

I've run both routes many times. I think overall I prefer the 93 route, if only because less time spent on the interstates. It's likely an hour or so longer, but a lot less aggravating.

If you pick 89, then yes, SR20 is the crossover connector of choice.

[azdryheat]

I take the 89 to the UT-20 to I-15.

[ppine]

There are many ways to make that trip. HOw much time do you have?