If I remember correctly any layover that is part of a one way reservation on Southwest would be limited to 4 hours anyway, and that's IF you could find one that happened to stop in Indianapolis. The best way to handle this would be to book a multi city trip or make multiple one way reservations, Newark or Laguardia to Indy, then Indy to your west coast destination. Then you can control how much time you spend in Indianapolis. --TheMiddleSeat
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