What does “phantom availability” mean?

“Phantom availability” happens when a flight shows up as bookable with points or miles, but when you try to reserve it, no seat is actually available.

Why it happens

This usually comes from inaccurate or outdated airline data. Common causes include:

• Cached results: A program displays availability that has already expired.
• Syncing delays: Seats were taken or pulled, but partner systems haven’t updated yet.
• Partner feed glitches: Some programs incorrectly display award space on partner airlines.

How to protect yourself

• Check the airline’s site directly: If the seat isn’t listed there, it’s likely phantom.
• Compare multiple sources: Look at another program or search tool.
• Call to confirm: A loyalty program agent can often verify real availability.
• Wait to transfer points: Only move flexible points after confirming the seat on the airline’s own site.

Seats.aero works to display accurate, real-time data, but phantom availability is a limitation of how airline systems sync. Always verify before transferring points or canceling backup tickets.