I hate JL and NH websites with a vengeance more than I get irritated by BA website.

I particularly dislike being required to put in the date, flight number, first and last name and the booking reference just to pay for the flight on JL. Inefficiency central. None of the emails they send to me, including for making the payment for reserved flights, have a direct link to that booking and they require manual input.

SQ falls over every time I try to do something a bit strange. The classic one is 'website payment limit'. Why set a c. £5,000 floor limit on website payment processing limit for Danish or Swedish (somewhere up there) currencies while selling tickets priced nearly double that, and when it doesn't go through, it doesn't tell you it's because of their floor limit? (I only found out because I called them and asked what's happening because I could not get the transaction to go through after trying a couple of times, and they said "Oh we have a floor limit on the website!") Or multi-city doesn't work when I know the flights exist, or failing to price up first class fares ex-ATH even though they could potentially do it.

Then more simple ones like A3 still have some functions that are inappropriately "sticky" that irritates me.

All airline websites cause me gripes, although generally not as highly irritating as removing all hotel email addresses from the website when SPG merged with Marriott and Marriott website took over. The single most irritating corporate decision in terms of website I have encountered in the last 12 months.

Still, I HATE BA's new MMB above all else... I just don't like the interface and I can't find anything I need. (Thankfully, I could change back to the old one. Phew.)