Category I
Space-A eligibility
Who can fly Space-A — and where?
Space-Available travel has six priority categories, but category alone does not tell you where you may travel. Your status, sponsor relationship, documentation and authorized geographic segment all matter.
The rule that matters most
Eligibility is not a reservation or a seat guarantee.
Space-A uses surplus aircraft capacity. Even an eligible traveler can be left behind if a mission changes or no seats are released. Build a backup plan before committing money you cannot recover.
Priority order
Space-A Categories I through VI
The labels below summarize the official category headings. They are not a substitute for the detailed eligibility table in DoD Instruction 4515.13.
Category II
Accompanied emergency and morale leave (EML)
Category III
Ordinary leave and certain other authorized travelers
Category IV
Unaccompanied EML
Category V
Certain permissive TDY, students, dependents and other authorized travelers
Category VI
Retirees, certain dependents, Guard/Reserve, qualifying veterans, surviving spouses and other authorized travelers
Veterans
Permanent total service-connected disability
Current DoD policy places authorized veterans with a permanent service-connected disability rated as total in Category VI. Their authorized geography is narrower than the worldwide travel many people associate with military retirees, so do not assume an overseas route is permitted merely because an aircraft flies there.
The exact policy language and current identification/document requirements control.
Retirees & families
Sponsor and dependent rules still apply
Eligible retired members generally compete in Category VI. Dependents can have sponsor, accompaniment and valid-ID requirements. Guard and Reserve eligibility also depends on the traveler’s exact status and permitted travel segment.
Verify the traveler status in the current DoD table instead of relying on a generic “military family” label.
Before you leave home
Three checks prevent most eligibility surprises
1. Status
Confirm the exact traveler status and Space-A category in current DoD policy.
2. Geography
Confirm that your status authorizes the exact CONUS, overseas or CONUS-to-overseas segment you want.
3. Terminal
Ask the departure terminal what documentation it currently requires and mark yourself present before roll call.
Common questions
Space-A eligibility FAQ
Are veterans eligible for Space-A travel?
Some veterans are. Current DoD policy includes authorized veterans with a permanent service-connected disability rated as total in Category VI, subject to the geographic travel segments allowed by the policy. Veteran status by itself does not make every veteran eligible for every Space-A route.
Can a 100% disabled veteran fly Space-A overseas?
Do not assume worldwide eligibility. The current DoD Category VI rule for veterans with a permanent service-connected disability rated as total limits the authorized travel geography. Check the current DoD instruction and the operating passenger terminal before planning an international itinerary.
What Space-A category are military retirees?
Eligible retired military members generally compete in Category VI. Dependents may have additional accompaniment and identification requirements, so verify the current rule for the exact traveler group.
Does a lower Space-A category number have priority?
Yes. Space-A selections are made by priority category, with Category I ahead of Categories II through VI. Within a category, sign-up timing and the terminal's current passenger-processing rules matter.
Does being eligible guarantee a Space-A seat?
No. Eligibility only allows a traveler to compete for unused capacity. Missions, destinations and seats can change, so travelers should have enough flexibility and money for a commercial backup.
Official sources
Verify the rule before travel
MilVoyage explains the rule in traveler language, but DoD and the operating passenger terminal control eligibility and documentation.
Eligible? Build the backup plan next.
Compare terminals, current postings, weather and a commercial fallback before you travel.