| Answer | Crossword Clue |
|---|---|
| THAN | Lighter-...-air (buoyant) |
| THAN | Lighter-..-air |
| THAN | Lighter ... air |
| THAN | Lighter-air connection |
| THAN | Lighter-air link |
| DIRIGIBLE | Lighter-than-air aircraft |
| AEROSTAT | Lighter-than-air craft |
| DIRIGIBLE | It's lighter than air |
| DIRIGIBLES | Lighter-than-air craft |
| AEROSTAT | Lighter-than-air aircraft |
| AMMONIA | It's lighter than air |
| NEON | Gas that's lighter than air |
| AEROSTAT | Any lighter-than-air craft. |
| BALLOONPARK | Place to take off in lighter-than-air craft? |
