Just be realistic about the trade-offs in cost, comfort, and convenience
In travel, if you’re flexible, you can make amazing things happen. It’s possible to get great prices on great seats just by flying on the dates and routes where airlines have wholesale or distressed premium seat inventory. It’s that simple.
But life gets in the way of being flexible. Sometimes you can’t move the date (it’s Claudio’s graduation) or a kajillion other reasons.