I booked a flight from LGA-NAS, returning NAS-ATL-JFK because it was 10k TY points (or about $120) cheaper than the NAS-LGA non-stop back. I check tonight and the RT, both non-stop is actually 500 or so TY points cheaper. I called Citi TY and they said there would be some sort of $50 fee because it was an international booking so I hung up and called Delta directly and the rep couldn't have been nicer, switched me to the non-stop back and was even able to give me a $7 voucher for the price difference. The reason I write this post is because I was over the 24 hour time limit by 2 hours but the rep from Delta said that as long as you call them before midnight the following day of your booking you can change/cancel, no problem. Anyone know if this is true of all airlines, some or just Delta?