American Airlines and British Airways have Seattle to Munich, Germany at $488 on their websites. Ticket price drops to $446 round trip booking through British Airways AARP website.
Travel Departure Dates: January – March 2018.
British Airways AARP ticket $446.42 round trip SEA-MUC
Seattle SEA – London LHR – Munich MUC – LHR – SEA
American Airlines $487.66 round trip SEA-MUC
Seattle SEA – Philadelphia PHL – Munich MUC – PHL – SEA