Best days to buy plane tickets: It's all about timing.

— Yahoo! Finance —

Ticket prices are highest on weekends. Tuesday is when sales are most often in place. Wednesday has good and occasionally better ticket prices.

Many seat sales are launched Monday night. Competitors typically match the lower prices Tuesday morning.

The day you depart can more heavily influence the fare than the day you buy. Travel on a Tuesday, Wednesday or Saturday.

How far in advance you buy still impacts pricing. To get tickets before the cheapest seats sell out, buy a month or two in advance.