Who Can Fly Space-A and How the Military Decides

The Five Categories That Determine Your Space-A Access

Space-A travel is open to military members and their families, but the military divides passengers into five categories based on their connection to active duty. Your category determines when you can book a flight and how likely you are to get a seat. Category 1 passengers board before Category 2, and so on — so knowing which category you fall into tells you whether a particular flight is realistic for you or whether you should wait for a less crowded route.

The five categories run from Category 1A (active duty military and their immediate families) down to Category 6 (certain other military-connected travelers). Most people who use Space-A fall into Categories 1 through 4. The military publishes seat availability by category on the Space-A website before each flight, so you can see in advance whether your category has realistic odds on a given route.

Key Takeaways

• Active duty service members and their spouses or children are Category 1A, the highest priority for Space-A seats.
• Retired military members and their families are Category 2, and they board only after all Category 1 passengers are seated.
• Reserve and National Guard members on active orders fall into Category 1, but those not on orders are Category 3.
• Medal of Honor recipients and their families are Category 4, and certain other groups like Department of Defense civilians on official travel are Category 5 or 6.
• The military posts seat counts by category before each flight, so you can see whether your category has a realistic chance before you show up at the airport.

Category 1A: Active Duty and Their Immediate Family

Category 1A includes active duty service members in any branch of the military, plus their spouse and unmarried children under age 23 (or up to age 26 if enrolled full-time in college). This is the highest priority category, and these passengers board before anyone else. If you are on active duty or married to someone on active duty, you are Category 1A.

Dependent parents and parents-in-law do not fall into Category 1A, even if the active duty member claims them as dependents on their taxes. They would be Category 2 (if the service member is retired) or Category 3 (if the service member is still active duty but the parent is not a spouse or child). Adult children over 23 who are not in school also drop to a lower category.

Category 1: Reserve and National Guard on Active Orders

Reserve and National Guard members who are on active duty orders at the time of travel are Category 1, which is the same priority level as active duty retirees. This applies whether you are on orders for training, deployment, or temporary active duty. Your orders must be current — if your orders ended, you drop to Category 3.

Your spouse and unmarried children under 23 (or 26 if in college) travel with you at Category 1 as well. If you are traveling alone without family members, you still need to show your active orders at check-in. The military verifies orders through the Defense Enrollment may be able to access Reporting System (DEERS), so make sure your family information is current in that system before you travel.

Category 2: Retired Military and Their Families

Military retirees — anyone who served 20 years or more and receives a retirement check — are Category 2. This includes retirees from all branches. Your spouse and unmarried children under 23 (or 26 if enrolled full-time in college) travel at Category 2 with you. Retirees board after all Category 1A and Category 1 passengers, but before Reserve and Guard members who are not on active orders.

You will need to show your military ID or retirement papers at check-in. If your military ID has expired, bring your retirement documentation instead. Dependent parents do not travel at Category 2 even if you claim them as dependents — they would be Category 3.

Category 3: Reserve and Guard Not on Orders, and Dependent Parents

Reserve and National Guard members who are not currently on active duty orders are Category 3. So are dependent parents and parents-in-law of active duty or retired service members, even if the service member claims them on their taxes. Category 3 passengers board only after Categories 1A, 1, and 2 are seated, so seats are less certain on popular routes.

Adult children over 23 who are not enrolled in college also fall into Category 3. If you are a dependent parent traveling with your active duty child, you will need to bring documentation showing the relationship — a birth certificate or marriage certificate — plus the service member's military ID. The military verifies dependent status through DEERS, so confirm your information is listed there before you travel.

Category 4: Medal of Honor Recipients and Other Authorized Groups

Medal of Honor recipients and their authorized family members are Category 4. This is a small group, but they receive priority over most other non-military travelers. Certain other groups also fall into Category 4, including some Department of Defense contractors on official travel and other military-connected individuals designated by the military.

If you believe you fall into Category 4, contact your local Space-A office or the military branch you are traveling with to confirm your status. The rules for Category 4 vary by situation, and the military maintains a specific list of who qualifies. Bring documentation of your status — whether that is a Medal of Honor certificate, a Department of Defense travel order, or other official paperwork — when you check in.

Category 5 and 6: Department of Defense Civilians and Other Authorized Travelers

Category 5 includes Department of Defense civilian employees traveling on official government business, and Category 6 includes other authorized travelers such as certain contractors or individuals on military-sponsored travel. These categories board last, after all military-connected passengers. Seats in these categories are rarely available on popular routes, and you should expect to be bumped if military passengers need the space.

If you are a Department of Defense civilian, you will need your civilian ID and travel orders to check in. Other Category 5 and 6 travelers should bring whatever authorization document the military issued for their Space-A travel. Contact the Space-A office at your departure airport if you are unsure whether you fall into these categories or what documentation you need.

How to Confirm Your Category Before You Travel

The easiest way to confirm your category is to call or visit the Space-A office at your nearest military installation. They can look up your status in DEERS and tell you which category you fall into. You can also ask them which routes currently have seats available for your category, which saves you a trip to the airport if your category has no realistic chance on a particular flight.

Bring your military ID, retirement papers, or dependent documentation when you visit. If you are traveling as a dependent of an active duty or retired service member, bring the service member's ID as well. The Space-A office can also tell you what documents you will need at check-in on the day of travel, which varies slightly by branch and installation.

Frequently Asked Questions

What if I am divorced from a service member — can I still travel Space-A?

No. Space-A travel is limited to current spouses and unmarried children. If you are divorced from a service member, you are not authorized for Space-A travel, even if you were married for many years or have adult children in the military. Your only option would be to join the military yourself or marry someone currently on active duty or retired.

Do stepchildren count as dependents for Space-A purposes?

Stepchildren count only if they are listed as dependents in DEERS and are under age 23 (or 26 if in college). Make sure your stepchild's information is in DEERS before you travel. Bring documentation of the relationship — such as a marriage certificate showing you married the child's parent — when you check in.

Can my adult child who is in the military travel with me at my category?

No. If your adult child is on active duty, they travel at their own category (Category 1A if they are active duty, Category 1 if they are on Reserve or Guard orders). You cannot combine categories or travel together at a single priority level. Each person books separately based on their own military status.

What happens if I show up at the airport and I am told my category has no seats?

You will not be able to fly that flight. The military does not hold seats for lower-priority categories if higher-priority passengers need them. If you want to know in advance whether your category has realistic odds, check the Space-A website or call the Space-A office before you go to the airport. They post seat counts by category for each flight.

If I am medically retired, am I Category 1A or Category 2?

Medical retirees are Category 2, the same as any other retiree. Your spouse and unmarried children under 23 (or 26 if in college) travel at Category 2 with you. Bring your military ID or retirement documentation at check-in to show your status.