Packing for Space-A: The Bag That Saves the Trip

Packing for Space-A is not like packing for a vacation. It's closer to packing for a road trip where you might sleep in the car, the car might be a cargo jet, and nobody can tell you which day you're leaving. That changes what goes in the bag.

Know the limits first

The standard allowance on most Space-A flights is two checked bags per person, each up to 70 pounds and 62 linear inches (length plus width plus height), plus one hand-carried bag no bigger than 45 linear inches that fits under the seat or overhead, and one personal item like a purse or briefcase. You can't pay for extra bags the way you would with an airline. If it's over the limit, it doesn't fly.

Smaller aircraft can be much stricter, sometimes one bag of about 30 pounds. If you're flying anything other than a big transport, ask the terminal before you show up.

The real rule: pack light enough to carry all of it yourself, at a jog, across a flight line, with nobody helping. You may need to.

Dress for a cargo bay

Military transports weren't built for comfort. The cabin can be cold, loud and dim, and on some aircraft you'll sit in red webbing seats along the side of the plane. Wear:

Comfortable, neat civilian clothes. The shirt with the questionable slogan can stay home.
Closed-toe shoes. No heels or flip-flops on transport aircraft.
Layers. A fleece or light jacket you can pull on in the air, plus a hat.

A small blanket or an inflatable pillow takes almost no room, and four hours in you'll be glad you brought it.

The carry-on is your survival kit

Assume your checked bags are out of reach until you land, possibly for a long while. Your carry-on should get you through a full day and a night if it comes to that:

IDs, passports, your sign-up confirmation and any other documents. Never in a checked bag.
Medications in their original containers, with a few extra days' worth.
Earplugs or noise-canceling headphones. Not optional on a cargo jet.
A phone charger and a battery pack. Don't count on finding an outlet.
Snacks, and an empty water bottle to fill after screening.
A change of clothes, basic toiletries and a toothbrush.
Something to do that doesn't need Wi-Fi. A paperback is the classic.

Food on the flight

Many terminals sell boxed meals for a few dollars, and some only take cards. Other times there's nothing. Bring snacks that survive being squished and won't make enemies in a closed cabin. Nobody in a cargo bay wants your tuna.

Leave these at home

Pets. Pet space on military flights is reserved for people moving on orders. Traveling with a service animal is a different matter; call the terminal ahead of time.
Anything you can't afford to lose. Space-A bags get handled like everyone else's, by people who are busy.
A tight schedule. Not technically luggage, but it's the heaviest thing people try to bring.

Pack a Plan B in your wallet

The most important thing to carry weighs nothing. Know the nearest commercial airport to every terminal you might end up at. Have a credit card with room for a last-minute ticket and a hotel night. Write down base lodging numbers before you leave. When a flight falls through, the traveler who planned for it calls it a bonus day. The one who didn't calls it something else.