Long post, so get a cup of Joe:
I want to start by saying that Paul and Robin have offered you some great advice, and I agree with just about everything they've said.
I have flown with two to three dulcimers (the third would be a Griebhaus electric, which is very thin) in a standard TKL double-gigbag oneverythingfrom a Canada Regional Air (CRJ-700 and 900 but not 200) which means that it'll also get on the Embraer E series (E170 and E175 but not the 125 and probably not the ERJ145)and definitely the MD88 MD90or larger (those are the regional jets that I've had experience with). A general rule of thumb, look at the layout when your picking your seats. if the seat layout is 2 and 2 or larger, you're golden (tho' I have gotten it on planes with a 1 and 2 seat arrangement...but just barely)...if it's a turbo prop, yr screwed.
Because I do this for a living I HAVE to get the cheapest flights possible, which generally means the back of the plane. Fine with me, 'cuz I'm first on last off too, and I can fill up the overheads before everyone else. Being a man of average height, I'm also quick to "help" other passengers stowing stuff in my overhead (note the possessive) if they resist (usuallybecausethey're men and they "got this") I point out that that is a musical instrument and that I'D HATE TO SEE IT UNINTENTIONALLY GET DAMAGED (I'm never rude, angry or impolite, but you can imagine that the language i use is a quite bit stronger than that)
Here's what I used on the last trip....
That's a single TKL bag with two dulcimers in it (one in a cloth bag made by Mary Rockwell) I DO NOT recommend this, but i didn't have my double bag and was in a bind.
From the moment I get out of the car, the dulcimer is in it's straps and on my back (except for security of course). This makes it seem smaller, and is lessnoticeable...in fact they generally don't see how big it is until I've passed, and by then it's too late. If I get grief at the gate or the ticket counter (usually the ticket counter) I do three things:
- remain unfailingly pleasant and polite
- talk as slowly and loquaciously as I can
- I am quick to gate check it
Pleasant and polite should be obvious, your beloved instrument iscompletelyin their hands and they have the power to do everything from charge you extra, force you to check it, to kick you out of the country (I have been threatened with all three). But, I once got to take three carry on bags to England because the woman at the counter took pity on me (and anyway, she said she wouldn't see any of that $200 extra baggage charge she could've hit me with. YOU READ THAT RIGHT $200).
Speak slowly....especially if you are on early, there are a lot of people behind you and the staff don't have much time to process the flight, so if you're nicebut slowthey may make an exception for you... I once flew from Philly to Nashville with my guitar under my seat (with my feet on top 'cuz it was WAAAAAY too big to be under there) because they didn't have the time to hold the flight to make me go to the ticket booth and get a gate check tag.
IF I ABSOLUTELY HAVE TO, I will gate check, even with gate checking yourinstrumentis doomed if it goes into the hold in just a gig bag. So I have been known to ask for the gate check and then remove the tag. I did this once on a flight back from England. It means that someone has to come onto the plane and then remove it from the overhead ...in front of everyone, making them the jerk that took it and put it in the hold. That's right, if i can i'll use peer pressure
If that seems harsh, listen to this. I own a flight case, a very expensive case (intended for keyboards) that I bought SPECIFICALLY for flying with my dulcimers. In 2008 on my way to my first UK tour, I was told at baggage claim that the case was oversized and that i would have to pay an additional $175 each way to fly with it. In other words, cough up, or don't fly (the lady literally said "well you can leave it here but since it's an unintended bag, it'll be destroyed") In addition, when I got to England I had to bang the thing back into shape with a hammer to undo the damage that it had suffered in transit. So I got the message loud and clear: it's us verses them, and we don't have much leverage.
The people who work for the airline, in my experience, are overworked andunderpaidand forced by some corporate bean counter to adhere to rules thattheylikely think are BS too. Be considerate, and friendly but resolute.
finally a BIG caveat... Most of my issues have been in ATL and leaving the Uk. Usually for me, the first leg is out of Nashville, and there probably isn't a better airport in the world to fly out of with an instrument. All that to say YMMV.
That said, you never know. Philly is astraightup hostile airport in some ways. Yet the only conversation I've ever had about myinstrumentswentlike this. Them: "what are those" Me:{briefexplanationof the dulcimer and how it works} Them: Cool!
Also, I don't recommend Apple Creek dulcimers for the most part...but if you can get this one for $64 it's worth it just for the case. http://www.amazon.com/Applecreek-PKACD150K-Hourglass-Shaped-Dulcimer/dp/B001AV3OZG/ref=sr_1_11?s=musical-instruments&ie=UTF8&qid=1357598580&sr=1-11&keywords=apple+creek
anything that fits in a McSpadden bag should be fine.
Good Luck!!