American Airlines, Delta Air Lines and United Airlines will soon require passengers to cover their faces during flights.

European and Asian train systems do not offer this service and require passengers to keep their bags with them at all times.

Airlines are expected to scrutinize passports of travelers, and warned the new rules could require passengers to arrive even earlier for U.S.-bound flights.

Qatar Airways is encouraging social distancing on board when possible, especially on flights with lighter loads, and will require passengers to wear masks.

Qatar Airways chief executive Akbar Al Baker says the day could come when airline safety rules will require passengers to fly in their underwear.

The regulations on carrying liquids, which require passengers to keep liquids of up to 100ml in transparent plastic bags, came into force in 2006.

Photo: AFP Some airlines are now requiring passengers to pay their fares in dollars.

Malaysia Airlines requires passengers to wear masks onboard.

As well as a face mask, Qatar Airlines also requires passengers to wear a plastic face shield.

Shanghai already requires passengers flying in from such countries, regardless of nationality, to be quarantined for 14 days.

But, unlike Bogotá, level boardings may not be an option requiring passengers to climb four steps to board.

U.S. carriers are among those requiring passengers and crew to wear facial coverings, and have also endorsed temperature checks.

Qatar Airways has gone a step further, requiring passengers to wear a plastic face shield as well as mask on flights.

The e-borders programme, which requires passengers to provide airlines with their personal details before they travel to and from Britain, began in 2004.

It expanded regulations for air and sea travel, requiring passengers from South Korea, Japan, Italy and Iran to report their health status before entry.