In terms of things that aren’t really much of a loss…
Via Travel with Grant, Frontier EarlyReturns will be discontinued as a US American Express Membership Rewards transfer partner as of March 5, 2015:
Effective March 5, 2015, Frontier Airlines will no longer be a point transfer airline in the Membership Rewards program. Any Membership Rewards point transfers for Frontier Airlines must be made by March 4, 2015. These transfers will be considered final, non-refundable, and subject to the EarlyReturns® program terms and conditions. To transfer points to Frontier, please visit membershiprewards.com/travel.
The transfer ratio between the two programs is presently 1,000:1,000.
Frontier has a somewhat unique frequent flyer program among low cost carriers, given that they have a traditional award chart as opposed to a revenue based frequent flyer program. The thing is, programs with traditional award charts are typically most valuable when there are aspirational redemptions to be had (given that you can get a disproportionate amount of value from your points). Without aspirational redemptions, I tend to think the value of revenue based redemptions are typically better, since you can redeem your miles for any flight at any time.
Ultimately I’m sure they were a useful transfer partner for some, though I couldn’t imagine ever transferring Membership Rewards points to Frontier, personally.
So I tend to think of this as being about as much of a loss as when Carlton left the cast of Real Housewives of Beverly Hills. I’ll gladly continue to transfer my Membership Rewards points to Air Canada Aeroplan, British Airways Executive Club (especially with a transfer bonus), Delta SkyMiles, etc.
Have you ever transferred Membership Rewards points to Frontier EarlyReturns?