For tracking a particular flight number from the little left sidebar form, I find the airline name entry field kind of frustrating. Seems like it should be able to recognize 2-character airline codes, but it always wants an airline name.
For example, if I type in KL for the airline and 662 for the flight number, I get the error “You must type in part of an airline name and then select the correct one from the box below the search form.” KL662 should be sufficient information, right? (Even “KLM” isn’t enough for the form!)
Minor nit-pick, I know… Thanks for providing a great service!