Yes. Under age 2 can fly as a lap child, over age 2 requires a seat. Southwest's Wanna Get Away fare will likely be the cheapest. The Infant & Child Fares are a discount off of the refundable* Anytime fare, so they're more flexible, but also more expensive. If you buy a regular WGA fare you won't need to verify the child's age at the airport. *"Refundable" fares become non-refundable if you make any changes to the itinerary at any time. If you need to change a refundable fare, cancel, request a refund, and rebook (don't use the "change flight" function.)
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