It is common for people to feel that they are extremely productive when on flights, particularly business flights. Reason: There should be absolutely no distractions. No wifi; no texts; no calls; no pesky meetings; no shared office morning teas just you and your work.
There’s no need to wait until your next flight to feel that productive. You can create the environment you need whenever you like. Have a day away from the office (and all those pesky interruptions), put on an out-of-office automatic reply, and turn all of your devices onto airplane mode.