Join Date: Apr 2009
Location: Bye Delta
Programs: AA EXP, UA Silver, HH Diamond, IHG Plat, Hyatt Plat, Marriott Titanium, Nat'l EE, Avis PC, Hertz PC
Posts: 16,626
Below where you enter your origin and destination, click the Advanced Controls link to expose additional fields.
Hover over the question mark icons next to the routing and extension code fields. They’ll show you the codes along with examples.
In your case, you’ll want to use the extension codes, and in the tooltip that pops up, click Faring to find what you’re looking for.