For anyone interested in air travel with your Inspire 1, the DJI case fits easily in the deepened overhead bin of all Delta jets with plenty of room to spare. Template shows that it can be placed long dimension in B737 overhead bins with over 3" to spare while closing the bin:
The narrower dimension is shown on the template for reference. I cannot vouch for the depth of other airlines' bins, but this template demonstrates it will also fit narrow dimension in, in a much smaller space.
Remarkably, this case fits all of the same components of the Go Professional case in 37% of the volume. It can save you as much as $200 each way when you travel (the Go Professional case incurs oversize baggage fees).
While it is technically larger than the 22" x 14" x 9" limit major carriers in the USA impose on carry on luggage, plenty of folks bring larger luggage every day. A limiting factor might be width of the x-ray machine at the security checkpoint, so you may want to arrive early in case either TSA or the airline itself makes you check it.
The $25 checked baggage fee may be no fun (if it applies to you), but if you plan to check it anyway, the advantage is that you can transport a third 5.7 Ah battery, but only if installed in the quadcopter and checked. All other spare batteries must travel with you in your carry on luggage, with no limit on the number of 4.5 Ah batteries, but a maximum of 2 x 5.7 Ah batteries.