ITA Hacker - it's great to hear that you guys are still working on this in your spare time! Please keep up the great work!

Three requests:
1. I want something closer to a command line tool interface, where I don't want to have to wait for the airport codes or the routing or extension codes to validate before being able to fill the rest of the form. This is a bit annoying from a UX perspective, especially when I'm on a slow connection in some developing country. Maybe this could be an option that would be set as a cookie? From a UX perspective, in this 'advanced mode' I'd fill out the form and have everything validated before the data to the backend to do the search.
2. Any chance you can come up with a shorter URL? Happy to use a URL shortener (e.g. https://tinyurl.com/gmtrx), but you can probably do better there.
3. Time limit to do the search - any chance we can have an option to raise it? You may need to incorporate reCaptcha there to prevent bots from abusing the servers.

Thanks again for doing the update to keep the tool alive so that we can continue using it!