Find Expedia UK's customer service, support, and complaints contact email address on this page., A signature by the person submitting this complaint. You may send your Trademark Complaint (a) by email to TrademarkComplaints@expediagroup.com (b) by fax to +1 425 679-7251, Attn: Expedia Group Trademark Agent, c/o Legal Department, or (c) by sending a printed signed copy of the Trademark Complaint to: Expedia Group Trademark Agent, Cancel your hotel or vacation rental booking Cancel your flight Refund basics Use an Expedia coupon International travel documents Your rights as a flights traveler, Hi there, I wondered who I can lodge a complaint with about an experience I had with Expedia?, Give us suggestions for improving our siteWebsite Feedback », .