Can I get cheaper flights if I've flown before with United?

Last year my family members and I each traveled about just under 21000 miles (into and out of the US) with United Airlines, but neither of us created an account or anything when booking these flights. Was just wondering whether myself or my family are now eligible for any discounts or anything that could potentially get us lower prices on United if we were to fly them again this year.

I suspect there may be mileage programs, but even if there is one I'm really unsure as to how they fully work as I've never really taken part in one before. Many thanks.

Best Answer

Probably not worth it, even if you have still all relevant documentation and are willing to pay the service fee. Over the last two years United has significantly de-valued their loyalty program.

To gain the lowest status "Premier Silver" you need to fly 25000 status miles AND spend at least 3000 "qualifying" dollars. The latter one is particularly tricky since flying on Star Alliance partners almost never counts.
The exact rules for the accrual of status miles, award miles and qualifying spent are quite complex and have little to do any more with the actual miles flown.
Economy Saver Award for a domestic round trip costs typically 25,000 award miles.
In addition you have to pay fees and taxes. Especially for international trips this often exceeds $100, which greatly diminishes the value of the miles