How do U.S. research institutions typically reimburse a faculty candidate's airfare costs for multi-city trips? I am interviewing at several research institutions in the U.S. for a tenure-track faculty position all around the same time. I booked a multi-city flight to avoid having to fly back to my current hometown between each interview because that would be lame. I plan on asking the institutions for guidance on how to get reimbursed, but figured I would ask here about what I should expect or what is commonly done for this situation. As an example, say for three interviews, ideally each institution would pay a third of the cost, but each institution has its own rules and they are not bound to do what other institutions would in any case.

So, how do U.S. research institutions typically reimburse a faculty candidate's airfare costs for multi-city trips?

Related: How to buy plane tickets for job interviews?
When looking for a postdoc and visiting multiple labs, I was asked to split the reimbursement for travel costs between the institutions. The exact details of how to split were left to me.

Most institutions expect to fund the entire trip for faculty candidates, so I don't foresee any problems with you asking them to pay less than what they expected.