actually I just checked other YYZ to NRT trip and a business class on YYZ to DFW as part of YYZ to NRT trip. Even though when I checked YYZ to DFW trip, only web special, and "business" are available. is there anyways to find out if "business" is SAAver or aanytime? I'm assuming I can book SAAver is available for us to bok as part of the international trip, but aanytime isn't.
A Business MileSAAver award from YYZ to DFW would cost exactly 25K miles, and would just be marked "Business," not "Web Special Business." An award just marked "Business" that costs 50K miles or more would be an AAnytime award, which can have multiple redemption rates.
If if an ordinary "Business" SAAver award were not available for a stand-alone YYZ-DFW flight, it might still be available for a YYZ-DFW-NRT itinerary, because of "married-segment" availability.
AAnytime awards
are available for international trips, but only when all segments are on AA metal. If an award itinerary (domestic or international) has even one segment on a partner carrier, the itinerary can only be booked as a MileSAAver award (when available).