After just returning home from a road trip vacation to Disneyland and Las Vegas, which I began in a semi flare and seem to be now in a full flare, I discovered that during the vacation, I did well. The time I spent in Disneyland and Vegas were surprisingly good and fun. Only the two days driving home were more difficult because there were such long distances between bathrooms.
I think flying should work out well for you. And it can't hurt to ask about an aisle seat, whether the flight is booked or not.
I took plenty of generic cortenemas and used them nightly. I also took lomotil, as Dr. A suggested. It works a bit better for me than immodium, and I also take 1/2 tab at a time. You'll need an RX from the doc for it.
I know it's easy to say (write) but try to focus on the positive parts of the trip... that beach! The sun! The warmth!
It's easy to forget that we have this disease but it doesn't have us.
Potato... Female, 58, dx 11/07 mild left sided ulcerative colitis (50 cm)
asacol 3 3x a day, cortenema (generic) every third night
culturelle, benefiber wafers metamucil wafers, activia yogurt, spinach & sunflower diet, primadophilus reuteri, Centrum, Vitamin E 400 mg
omeprazole 2xday, oxazepam when needed, lomotil or ImodiumAD when needed
Yoga, meditation, The Work by Byron Katie, exercise at least 5 days a week