Same with me on Frontier. Dirt cheap flight from LAX to LGA (? I think, may have been JFK) last June. Get the Visa offers 2-3x/month but now that NWA and AA are both flying from HPN, there's a very slim chance I'll fly Frontier again.

Have about 13K AA miles in limbo. Will see where I am after August's HPN-ORD-LAX-MEL-ADL-BNE-LAX-ORD-HPN marathon to see value v. cost of the 13K.