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Southwest Airlines Reservations Phone Number: 1-800-I-FLY-SWA (1-800-435-9792) Above mentioned number is Southwest Airlines customer service, Reservation, Information toll free number for passengers, Using this number you can able to Reserve your ticket from your home itself. Read also: Delta Airlines Customer Care.
Reservations & Information: 1-800-I-FLY-SWA (1-800-435-9792) (24/7) 1  Thank you for calling Southwest Airlines, your call maybe monitored or recorded for quality purposes, lower fares maybe available on Southwest.com, to ensure that weâre best able to serve you please choose from one of the following choices.