1. Route: LHR - DEN
2. Date: April 2023
3. Fare class: L
4. Y->J
5. # of Plus Points: 30
6. How many days/weeks in advance ticket was purchased: purchased 10/22 - became 1K Dec 22 and applied plus points
7. How many hours/days/weeks before departure did upgrade clear: Months - Jan 2, 2023