That doesn’t even remotely help answer his question.

ZED fares are deeply discounted standby passes on every airline you can imagine. You are bottom priority for the most part. ZED fares come in brackets of High Medium or Low for cost structure. Most airlines tend to be medium cost. If you are trying to fly BKK-HKG for example you could see many different agreements. Cathay Pacific might be a ZED high and Thai might be a ZED low. So ship between airlines and you might be able to save some money on the same route. Also some airlines offer Business class ZED fares but they are often priced much higher than economy ZED fares. There is a huge break down of all our interline agreements in travel section of the company website.

List nonrev on United flights for a seat in the back. If you can’t get a seat in the back then list for jumpseat. If you commute and it’s on a different airline then you’ll list to jumpseat on them for either a cabin seat if open or flight deck. It’s all the same listing. If there is a seat in the back you’ll get it, if not then the jumpseat is your last option.

Hope this helps.