Two days before leaving for Florida I bought the biggest airline friendly suitcase I could find at "The Bay": a 29" case.
The only bike I have ready to take--Dahon Vitesse D5--seems to fold too big . I took off the wheels and pedals. The bike fits. But there is no room for the wheels .
A little investigation and it seems Dahon's "Airliner" suitcase would fit the bike with the wheels on but that suit case definitely seems oversize: 33" x 27". From what I gather the airlines like their suitcases to be in the 29" x 22" range.
Since this time around taking the bike is a bonus to the trip, I'm going to leave it behind. Next time I will prepare my Swift and pack that.
Seems to me my Dahons fold much smaller and much quicker than the Swift for intact storage and putting in the trunk (i.e. normal every day sort of use). But the Swift--like the Bike Friday--will fold smaller than the Dahon into a suitcase once I take off the wheels, rack, perhaps fenders. There is no further amount of components I can take off to make the Dahon fit any better, since it gets wider when it folds.
Kind of bummed out but oh well...