Flying from JNU going to the East Coast, I just spend the night in SEA.

From ANC, AS has a redeye to ORD, from there multiple options to ORD. From SEA, AS has a 345p flight that arrives MCO about midnight; this of course depends upon your transfer arrival at ANC. AS also has an 1110p flight to MCO and a morning flight.

UA has an afternoon flight ANC-SFO that connects to a redeye SFO-MCO (or spend the night in SFO) if you want to stick with UA. Also ANC-ORD redeye with further connection to MCO on UA.