Even better, lie-flat United IAH-MUC return in J for $2,250, with a quick side trip in J to CAI....You can play with the dates...Available continuously...
https://www.google.com/travel/flight...en-US&curr=USD
(Be careful some short legs may book in economy)...here is one that does not....
https://www.google.com/travel/flight...en-US&curr=USD
EDIT: Actually discussed here, I am reinventing the wheel, lol, but I found the IAH origin...
Star Alliance: ORD-CAI $2.1K