Had to attempt to purchase flight multiple times. Justfly claimed that the airline didn't accept Discover, despite the fact that I've used Discover before with Spirit, and half the transaction went through. Then, the fare "expired" during my transaction and I had to pay an additional cost for the same flight. Ended up with several different charges over two different cards that I'll have to double-check that the charge-backs are issued appropriately. Service also continued to push purchasing a reserved seat and travel insurance after I had already declined. Not exactly enticed to make a regular account with Justfly, will seek alternatives in the future.