I wouldn't have gotten my UGs from HND back in June but for seats.aero. I had alerts on for every Japan routing and was able to get PZ within 3 days of travel by switching flights (my original flight had J0 at 96 hours). I would've never found the space on my own because I had no free time there, working 14-16 hour days for 2 weeks straight.

When you look at Asia inventory on the site, it's amazing how there is zero PZ beyond 11/29 except one flight to ICN. UA really has decimated advance PZ availability.