Philip Hammond was answering lawmakers' questions Wednesday about government planning for the possibility divorce talks could end without a deal on trade, security and other relations.
He said it's conceivable "there will be no air traffic between UK and the European Union on the 30th of March 2019, but I don't seriously think anybody believes that is where we will get to."
Hammond says the government is "planning for all scenarios including a no-deal scenario."
He says uncertainty about Brexit is weighing on the economy, and "we need to remove it as soon as possible by making progress.
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