Russia's airspace is closed to many global airlines, forcing carriers to detour around the nation. Routes to and from Asia are up to four hours longer. Finnair's flight to Japan is four hours longer, while United treks an extra two hours to India. Carriers like British Airways, Finnair, Dutch carrier KLM, and Lufthansa, are flying about one to three hours longer than normal to avoid Russia. "Instead of a three-man crew, the extra hours can tip an airline into a heavy crew of four — and when there is a global pilot shortage, that can be really inconvenient."

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