Originally Posted by
ElizaB
How far out from the flight is it usually?
You have asked a question of fact and it has been answered. But I suspect that doesn't solve your travel related issue.
What flights are you looking at, what class, when and what flexibility do you have?
If you provide some background into what you are trying to do the knowledgeable folks here may be able to help with a strategy even if the answer to your stated question remains pretty vague.