Good design: Air Canada search form

We benchmarked several flight reservation systems over the last few years and AirCanada.com’s search form is truly one of the most usable.

(Typing “FRA” in the airport input field)

Their airport input field displays tips on focus, validates errors in real-time and, what we really like about it, suggests airports, cities, provinces, states and countries containing the 3 first characters entered.

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