United Airlines and Lufthansa have ticket prices at $543 to $567 for Houston to Kiev, Ukraine for travel from late August through November 2017.
United Airlines ticket for UA operated transatlantic flights
Houston IAH – Munich MUC – Kiev KBP – Munich MUC – Houston IAH
United Airlines ticket for all Lufthansa operated flights
Houston IAH – Charlotte CLT – Munich MUC – Kiev KBP – Frankfurt FRA – Houston IAH