djrez4 wrote:Depends on the airline. Southwest, for example, uses fixed-value miles. Each mile is worth a certain dollar amount toward airfare. So, yes, more expensive holiday tickets cost more points.
For other airlines that fix redemption levels, it's slightly different. United charges 25k one way for domestic travel but offers 12.5k saver awards sometimes. The price of the ticket doesn't matter. You may find that saver awards are few and far between during the holidays, so you end up paying more miles for your ticket, but it's not directly related to the ticket price. American has a similar system, but also runs peak and off-peak schedules for some routes - to Europe, for example - and charges fewer miles for off-peak travel. Again, not directly related to ticket price.
The reason there are higher point redemption costs is that they think they will sell the seats at a higher price. Remember, it costs very nearly the same to fly an airplane empty as it does with every seat full, so the airlines discount to fill the plane. There's no need to discount for peak periods, popular routes, etc, so there are fewer, if any, super saver tickets.