In a similar situation and looking into it as much information as possible. Currently have CJO at both (and SW). For some background, I’m separating from the military and am lining up a guard job in Nashville where all of mine and my wife’s family is from. I’ve started a pro/cons list but would love to add more into what im missing as I’m new into this. Like everyone I’m sure, I’d like to get to a point of flying min trips a month and almost 2 legs a day. Thanks!

UA
Pros: Widebody options quickly, good seniority progression,
Cons: Commuting (5 mainline flights/day max to most bases)
Retirements: 6,500 (10 years) 10,000 (20 years)

DL
Pros: Widebody options (eventually) 1 hr flight to ATL with 10 mainline flights/day, can drive in a pinch (4 hrs)
Cons: Missed hiring wave, lower seniority progression, Commuting but driveable.
Retirements: 5,200 (10 years) 7,300 (20 years)

SW
Pros: No Commute, Can drop schedule.
Cons: 737 and 2-3 legs/day for the next 30 years, no option for widebody, stovepipe upgrade to CA