There is a high pressure system that is located south of your planned route in the Northern Hemisphere on a west to east cross-country flight. To take advantage of favorable winds, you would plan your route

Explanation

In the Northern Hemisphere air circulates clockwise around a high-pressure area, so on its north side the wind blows from west to east. Flying eastbound on the north side of the high gives a tailwind; the south side would give headwinds, and the center of a high has light, variable winds.