Dennis,
Prior to COVID19, we generally purchased our airline tickets early, about 10 months in advance. Now, with the COVID19 uncertainties, we are waiting longer. We have a safari in E. Africa in July and still haven't purchased tickets.
Recently, ticket prices have dropped by 10%, I am tempted to purchase, but may wait a little longer. Delta had a policy in 2021 the allowed refunding tickets, but that has expired and buying refundable tickets now adds about 25% to the cost of the ticket.
I have half a million sky miles, but Delta won't allow me to use it on our safari trip. Not sure why, but that makes me a bit angry.
Another poster send me a message saying she had the option when at the purchase phase to use 100K sky miles to save $1000. Perhaps that will be available to me when I purchase?