Hi,
Leaving Indy flying to Denver (frontier)on April13.... and then onto LAX to Brisbane. I supposedly have 4 hours in LAX to check in. I have heard the Frontier gate is 6 and the Qantas Brisbane is 4. I will get in around 7PM and leave a little after 11PM.

How far are these terminals apart and could I just walk? Do I have to go downstairs (???) and retrieve my luggage and come back up and check in at Qantas counter gate 4 and go through security / customs etc? I dont plan on exiting. Or do I just check in at Qantas counter and bags don't have to be picked up and ran through again?

Thanks