Hello, Because of their timely service and seamless connections, Iberia and Lufthansa are among the Best Airlines to fly to spain, in my opinion. For direct flights to Madrid, Iberia was practical, and Lufthansa provided first-rate onboard amenities through Frankfurt. With its convenient flights via London, British Airways was also a fantastic option. During a lengthy flight, Qatar Airways amazed me with its comfort and cuisine. All in all, my trip to Spain was hassle-free and comfortable thanks to these airlines.