Upgrade: The No. 1 airline in the world, according to travelers

This airline earns sky high marks.

On Tuesday, TripAdvisor released its list of the best airlines in the world, compiled using an algorithm that factored in the quantity and quality of airline reviews and ratings submitted by travelers. The list was dominated by Asian airlines, with Singapore Airlines SINGF, -0.56% taking the top spot for the second year in a row. (Other rankings also give Singapore Airlines a top spot.)

What makes Singapore Airlines so special?

“They win first place in consumer polls decade after decade,” says George Hobica founder of Airfarewatchdog.com. “The planes are new and clean, the cabin crew, who go through the most rigorous recruitment and training process in the airline industry, are beyond compare.

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