I was nervous; the last time I tried to fly domestically with my Brompton, it didn’t go so well on a flight to Sacramento. The only time I had successfully carried the bike on was flying internationally.
Getting past TSA is always a breeze — the bike fits without an issue through metal detectors. The gate is more of a wildcard, as technically the bike is a few inches too wide to be carried on. But with my Carradice backpack, it works; the gate agents don’t seem to pay much attention to the size of backpacks.
Once on board, I had no issues sliding the bike safely in the backpack into the overhead bin — and it closed without an issue.