A year ago, many airlines were still burning through cash as some countries were slow to remove coronavirus-related travel restrictions. Now, with borders fully open, some of those carriers are posting big profits. British Airways-owner International Consolidated Airlines Group SA said Friday it was back in the black last year for the first time since the pandemic began. Singapore Airlines Ltd. earlier this month posted a record net profit for the nine months ended in December. Qantas Airways Ltd. this week reported a record pretax profit for its most recent half year.

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