Got the trike checked. The box was larger than Southwest’s size limit—then again, almost all bike boxes are. The ticket agent spent a while reading over the baggage policies and frowning, but let it pass. The TSA had no trouble with it, but they did force me to throw out a can of sunblock. Apparently Southwest will let me bring both my panniers on as carry-on bags. We’ll see if the gate agent agrees with the ticket agent on that.