Originally Posted by
84fiero
The easiest method would seem to be simply purchasing the Y ticket and upgrading with miles.
Originally Posted by
dkjb3t4
I guess I could fly Korean air, but the booking class that allows me to upgrade is about $2700 (nearly a business class ticket price), while cheapest is $1700, so I'm not sure if the work will let me do that.
Yes, that's the problem. I doubt an employer would allow/approve of an employee buying a more expensive ticket than necessary so the employee can upgrade themself. Lowest available coach fare is pretty standard.
Pre-arranging with whoever review/approves timesheet/expense, and documenting the lowest applicable coach fare at the time of purchase seems to be best.