For people who want to contact Delta Air Lines to make a complaint about their trip or have The change should take place in the next few weeks so everyone will have access to the new booking number. If you normally book flights through Delta.com or by phone, we recommend that you make your changes prior to Thursday, March 1st. If you are using a different method of booking travel, such as our website, your booking information may not be updated at this time or you may have already been booked under the old airline’s name for a flight that is now unavailable.For your reference, here are the flight numbers of routes affected by the name change
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