Company is flying me out for interview but expects me to pay up-front for travel?

I’m being flown out for an interview by a large corporation in the U.S. I’ve had companies fly me out for interviews before but I’ve never had to pay first for all of the travel myself and then get reimbursed by them later (2 months later in their words!)

Is this normal? I’m trying to hear from others who have been in this position. I’m not sure if I should just respond that I will only fly in for the interview if they pay for it up front.

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