Originally Posted by rkb2530

I find that my comfort level is much higher with an empty seat next to me. I am too cheap to pay for first and if my wife is with me, buying three coach seats is usually much cheaper than two firsts. Never done it before but it seems to me that this would be a "poor man's first class seat"

How does one go about buying an extra seat? Can it be done online or does it require a phone call?

What happens if the flight is overbooked, can you lose your extra seat?

Anything else to look out for?