I'm looking to purchase a United flight voucher, willing to consider various amounts depending on what is available. Total cost of my flight is going to be about $600 so whatever my best option is.
Also a question as I've never purchased one before, are there any restrictions? I understand this isn't necessarily allowed by United if they were to know. My flight is booking through United.com and the flight out is on United, but the return is on American. Would I still be able to use a voucher for that?