Route Maps

[Royal Canadian Airlines]

How come some airline route maps seem to be on a larger scale than others?

[Chavaquiah]

You can visit the GCM site (from where route maps are taken) and read about it in their FAQ: http://gc.kls2.com/faq.html#map-choice

In short, they have a set number of pre-drawn maps and use the one that best fits the request.

Rather than quoting, I suggest you read (link provided) the answers to the questions "Why is the world map sometimes used for routes in a single hemisphere?" and "Why not generate appropriately sized maps on the fly?"