I agree with DCGRUMPY, several times during January and February they had DINGs that went into June. They were very short term booking times, usually 2 to 3 hours. I jumped on 4 tickets out of Philadelphia for $94 RT [plus taxes and airport fees] even though it meant a 4 hour trip to the airport and 4 hours back home on our return. I was lucky and a few weeks later a DING came up out of Hartford [1 1/2 hour trip each way] for only $20 more round trip so I got an online credit and booked the new flights right away. Four RT tickets for $448.40 total. And I thought the $69 each way I got last May was great. I don't think I'll be able to get such low airfare again for quite some time.