First Class EasyUp Routes to Europe with American, One-Way Upgrades from $125
FCF research found routes with as low as a $125 one-way upgrade.
Sample Savings: Dallas-Madrid goes for $2,810 round-trip (inclusive). The regular fare is $4,236 (inclusive), a savings of $1,426 (34%). (No ticketing deadline and advance purchase is 150 days on this route.)