He has fascistic elements to his incoherent philosophy, but, no, he is no fascist. I say this for multiple reasons, which I will enumerate below. I should note that I am going by the conventional (political science specific) definition of "fascism" and not our contemporary, popular usage.
1. Trump is about as close to the reactionary pagan ethos of masculinity and individuality that fascism promotes as I am to inheriting his estate. He's a pathetic caricature of an adolescent girl whose self-worth is determined by Twitter followers. Trump's concept of masculinity, in particular, is so far from the fascist one, it is hard to make a case that Trump can be fascist from this point alone. Trump's masculinity, which may pass for "alpha male-ism" in some quarters, is actually behavior more like a woman's, according to the fascist mindset. He's soft, pudgy, bratty, whiny, and undisciplined.
2. Trump's reactionary "Make America Great Again" seems to ring harmonious with fascism's vision of a glorious national past, and I think it is here that one would have their strongest case for Trump the fascist. However, given Trump's fiscal policies, the America he is apparently seeking to resurrect is not the America of the past; it's very much the America of today. It's some sort of Trump idiosyncrasy and not reality, although certainly every fascist is guilty of historically bankrupt romanticism. Regardless, Trump is no reactionary or revisionist when his thinking is actually examined. It just appears that what. (He is, however, an atavism when it comes to rhetoric concerning certain minority groups.)
3. In order to be fascist, you have to have a specific ethnic group whose destiny you conflate with that of the nation. While Trump is a bigot, he doesn't necessarily construct American history in terms of any particular ethnic group, in any particular "volk."
Now, even though Trump is not a fascist, this does not mean he is not a demagogue, because he most certainly is.