As I mentioned in this post on travel methodologies, I never travel with anything larger than a rolling carry-on. So if I'm flying someplace that has inclement weather and I think I might need to bring boots, I have a simple space-saving trick: I wear them onto the flight. Even filled with rolled-up socks and power cables, boots take up far too much space packed into luggage, whereas the sneakers I pack are easy to crush and stow.
The problem with the boots-wearing is, it's a pain unlacing and re-lacing them at the airport security line. But I think I've just found a solution: A company called LEMs, for Live Easy & Minimal, sells a collapsible, packable boot that I could easily squeeze into packed luggage.
The LEMs Boulder Boot is made from 40% water-resistant nylon and 60% full-grain leather, and clocks in at just 9.9 ounces. I'm guessing the lightweight rubber sole is perhaps not as durable as the shitstompers some of you tough guys wear, but as I need to replace my Vasque boots every few years anyway, I'm willing to give the LEMs a spin next time 'round.
"There's absolutely nothing to this boot, no heel counter, no toe counter, no shank, and nothing stiff that would irritate the foot," the description claims. "If a barely-there boot is what you're in need of, look no further." Ironically, these might be more comfortable to wear on a flight than the Vasques.