@thatsarahlewis wrote: A birth certificate is required for Infant, Child or Senior fares at check-in. You will need to create that traveler a Rapid Rewards account prior to traveling in order for matching the ticket to birth certificate and finalization of the age verification. If you prefer to verify age instead of traveling with the birth certificate you can mail a request to the address here: https://www.southwest.com/html/customer-service/faqs.html?topic=age_verified Of course you can also purchase a standard fare and avoid all of this depending on which situation benefits you the most. A Young Traveler is already flying on a "standard" fare. Age verification would be for the purposes of confirming solo travel eligibility (over age 11), and while not required, to aid with getting the companion adult an escort pass.
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