I recently brought my EMO on a plane with me, no issues. However it’s worth noting that he was originally in his box in my carry-on, but they had to check one of my carry-on bags at the last minute due to space constraints. The flight attendant made SURE that I took him out of my checked bags and kept him with me in the cabin, as I was told that anything with a battery may not survive the pressure changes in the plane’s luggage compartment.
EMO travels well as long as you travel carefully!