Google Flight Explore allows you to search for the best deal for filghts. You can set email alerts for a specific period of time.  See tutorial from The Points Guy to learn the features offered.

This flight-refund tool uses artificial intelligence to monitor your flights and automatically issue refunds when prices drop. Once you create an account and connect your email, pAiback will scan your email for filght only emails and start tracking them.  You can manually add a confirmation email by forwarding it to ticketing@paiback.app.

For more information see the blog from The Points Guy.

Would you like to know how many points needed for the airline ticket? In most airline websites you can view by dollars or by points.

If you are doing your prelimanary research you are probably starting with Google Flights. There is a plugin that will show the dollars and points!  You will need to install the plugin by following the directions at Points Path, and it has a FREE version!