Mealey's ( April 4, 2024, 8:12 AM EDT) -- CHICAGO — Certification of a class of United Airlines Inc. customers who sued for refunds rather than credits for travel canceled due to the coronavirus pandemic is inappropriate based on the necessary “individualized factual inquiries as to each class member’s itinerary, which could include over 200,000 such inquiries,” a federal judge in Illinois ruled in an opinion that also denied a motion to exclude expert testimony relevant to class certification and instructed parties to file a joint status report concerning a pending motion for summary judgment....