A few months ago, DH decided we would be driving from PA in order to spend more money on the actual vacation part of the vacation. While I wasn't real excited about 16 hours in a vehicle with DSS and DSD, I adjusted to the idea. Now last night when we are talking about the trip, he said we will be flying if it fits in the budget. My question is, which airlines are most likely going to be the cheapest (lowest I got right now is airtran at 890)? And is it any cheaper to fly on a Friday than a Saturday? We are looking at flying out of BWI the end of June (22 or 23 to 29 or 30). When might I get a DING for these flights? TIA