Southwest Airlines does not have a standard senior citizen discount age. While they previously offered discounts for passengers 65 and older, those specific senior fares have been discontinued. However, passengers aged 65+ can still find deals and savings by booking "Wanna Get Away" or other promotional fares, especially by calling reservations directly. 

Here's a more detailed explanation:

• No specific senior fare:
  Southwest no longer has a dedicated senior citizen fare. 

• Flexibility with other fares:
  Passengers 65 and older can still take advantage of Southwest's flexible fare options and low-cost pricing. 

• Booking options:
  To find the best deals, seniors can book online, use the Low Fare Calendar, or call Southwest reservations directly. 

Value for seniors:
Southwest's generous baggage policy (including two free checked bags) and ability to bring medical equipment or mobility aids also offer value for older travelers.