| air travel | 58.33 | He detested air travel. | ||
| air attack | 52.80 | The air attack followed. | ||
| air pollution | 50.03 | Bad air pollution again? | ||
| air controller | 48.72 | Democrats, air traffic controllers, grumble. | ||
| air campaign | 45.36 | Air campaigns are not risk-free, either. | ||
| air traffic | 42.33 | Air traffic had returned to normal. | ||
| air fare | 30.22 | Air fare is extra. | ||
| air time | 29.30 | Air time is its currency. | ||
| air system | 26.73 | Airlines blame the air traffic control system. | ||
| air quality | 25.08 | Air quality is one example. | ||
| air service | 21.00 | There is no direct air service. | ||
| air war | 19.35 | Air war alone? | ||
| air defense | 19.22 | Air defenses remain ready. | ||
| air show | 15.80 | Air shows now are quite common. | ||
| air carrier | 14.42 | Also ask whether the air carrier is licensed. | ||
| air support | 14.42 | Air support? | ||
| air link | 13.96 | U.N. sanctions bar air links with Iraq. | ||
| air pressure | 12.18 | The air pressure had dropped. | ||
| air control | 11.98 | Air traffic control? | ||
| air flow | 10.53 | How can I stop that air flow? |