Delta has added new post ticket purchase upgrade options, available to customers regardless of whether they bought their tickets at or via a third party.

Until now the carrier had allowed passengers to purchase upgrades “by direction” – Delta gives the example of a flight between Savannah and Los Angeles, via Atlanta, where the upgrade would be purchased for both sectors of the flight.

The new option allows travellers to purchase separate upgrades on each individual sector (provided the itinerary is wholly operated by Delta), by either visiting or calling the airline’s reservations centre.

The carrier said that the service will also “soon be available via the Fly Delta App”.

In addition Skymiles Medallion Members can now opt to self-select upgrade seats from a seat map once their eligibility window opens. The enhancement also allows members to revert back to Main Cabin seats “if they aren’t happy with their upgrade seat assignment, for example, to a middle seat”.

Commenting on the changes Rhonda Crawford, vice president – global distribution and digital strategy, said:

“This is all about consumer choice. This flexibility is what our corporate travel customers, in particular, have told Delta they want because it lets them select their desired experience, regardless of how or where their ticket was bought.”

Delta recently launched a trial of self-service bag drops equipped with facial recognition at Minneapolis St Paul International airport, allowing customers to operate the machines independently.