At least a couple of people openly voted a question today as off-topic, despite noting that they considered it on-topic here as well.
After I posted about this in the chat, @hippietrail suggested I mention it here too, that if a question is on-topic on two sites, even if you think it's better on the other one, this is NOT a reason to vote it as off-topic.
From Meta.SO: What is migration and how does it work?
It is perfectly possible for a question to be on-topic on multiple sites, but that is not a reason to migrate it elsewhere. The OP asked their question here, so if it's on-topic here, then it should stay here.
Of course, if you truly feel a question is actually off-topic on travel.SE, then of course, do vote as such.