[08/18/2017 @ 5:02 PM CT] Fare gone. Removing from deal list.
Delta has round-trip flights from Chicago (ORD/MDW) to Frankfurt (FRA) or Munich (MUC) for $428 with a connection. Flights October to March. Flight may operate as a KLM/Air France codeshare. 7-day minimum stay required. Holiday blackouts apply.
Note: Stick to the example dates listed in this post, dates not listed here may have very long connection times.
Click for more details and booking links Cheap Flights: Chicago to Frankfurt / Munich $428-$434 r/t – Delta / KLM