Airfares change moment to moment and day to day. Search for a Los Angeles to New York nonstop one-way in business class and the fare could be $499 one minute and $1,999 the next. It used to be that airlines gave away their premium seats as a perk for loyal customers, but now they prefer to get whatever the market will bear. I check multiple times as far in advance as possible and snag a deal when it appears. I’ve noticed recently that airline apps remember your last search so it’s as easy as hitting the search button again and again to see if fares have changed.
Often, on domestic routes, nonrefundable business or first-class seats are just twice the cost of economy class rather than three or four times as much as they once were. As with nonrefundable economy class fares, you’ll pay $200 to change or cancel your flight.