Capacity controlled awards: Award prices rise according to demand on airlines with
different possible award prices for the same city pairs.
Not exact matches
Another suggestion is to be as flexible as
possible by considering
different dates, times and destinations, rather than just hoping to find a specific
award flight available on a certain day.
They're also subject to
different availability rules than free nights, so it's
possible full
award nights may be available in certain cases where points + cash nights are unavailable.
Otherwise, changing to a
different date or time should be
possible once more
award space becomes available.
Another suggestion is to be as flexible as
possible by considering
different dates, times and destinations, rather than just hoping to find a specific
award flight available on a certain day.
Since you'll use
different airlines for your flights, it's not always
possible to calculate how much a round - trip
award ticket will cost.