Board for Airport game

I was thinking about what the board would look like today, so I printed out something and started sketching it out.

Also, with regard to theme, perhaps this ought to really be a game about Travel Agents. Players are Travel Agents who can get access to seats on planes (doesn't matter what airline) - and they do so to satisfy the "tickets" representing trips passengers wish to take.

In this case it doesn't make sense for players to pay to upgrade their planes to fly farther, so maybe the game would be in 3 rounds... in the first, all planes can only use the "1 distance" routes, in the 2nd phase of the game, plans can use the 1 and 2 distance routes, and in the final phase players can move passengers across any route. Each round/phase might end once all tickets have been exhausted?