Hi all, I recently posted a question about Aer Lingus' 1 carry on restriction... well, it seems San Francisco is not that strict. They did allow one carry on, but I never saw them weigh the bag. Also returning back to SFO, I also didn't see anyone verify the carry on.
This is not to say that your Aer Lingus destination or departure city may not check.. but SFO to Dublin/ Dublin to SFO certainly did not.