+1-844-414-9223 To hold flight reservation with Delta Airlines, you can use their "Hold Reservation" option during the booking process. This feature allows you to secure your desired flight and fare for a limited time, usually up to 24 hours, without immediate payment. To use this option, log in to Delta's website or app, select your flight, and choose the "Hold" option at checkout if available. Make sure to complete the purchase within the hold period to avoid cancellation.