American Airlines and Oneworld partners have round-trip flights from Dallas (DFW/DAL) to Madrid (MAD) for $472, NONSTOP. Flights from January to May, midweek. 7-day minimum stay required. Christmas Blackout. Expect prices to fluctuate by +/- $15. Flight may operate as a Finnair/Oneworld code-share.
Note: Carry-on bag is allowed for free, but it will cost +$60 more each-way to check a bag. Upgrades into “Regular Economy” are available for +$45 each-way.
Note: Previous deal to Madrid were about -$60 less than this, but those were with a connection.
Read More Nonstop Flights: Dallas to Madrid $472 r/t – American