Heads up....I'm on a scotland tour with RS this summer and last week got cancelled for flight by Lufstanza with full refund but no offer to help rebooking. Was told they are cutting many flights till October due to fuel crisis. I'm out of Chicago O'Hara airport. Oh well. Now on United.
I’m surprised you booked with Lufthansa to begin with as United has a seasonal nonstop flight from Chicago to Edinburgh. Unless you were booked on a Lufthansa flight that was to be operated by United.
Good luck! At least you have plenty of time to book an alternate flight.
Originally I was bumped by United onto a Lufstanza flight. Never again!