| Cheap Flights: San Antonio to Madrid $420-$470 r/t [September-February] â American Airlines / Iberia American Airlines and Iberia have round-trip flights from San Antonio (SAT) to Madrid (MAD) for $420-$470 with a connection. Flights September to February. No Saturday departures. 7-day minimum stay required. COVID travel restrictions are still in place but this may be worthwhile for the dates later this year and next year. Click for more details and booking links Cheap Flights: San Antonio to Madrid $420-$470 r/t [September-February] â American Airlines / Iberia . | 
