No, Ryanair does not fly out of London Heathrow Airport (LHR). The Irish low-cost carrier exclusively operates out of London’s secondary, lower-cost airports, primarily London Stansted (STN), which serves as its largest base, as well as London Luton (LTN) and London Gatwick (LGW). Ryanair’s business model is built on minimizing operational costs to provide the lowest possible fares, and Heathrow’s landing fees and terminal charges are significantly higher than those at Stansted or Luton. Furthermore, Heathrow is a high-demand, capacity-constrained hub that prioritizes full-service legacy carriers and long-haul international routes, which does not align with Ryanair's high-frequency, quick-turnaround short-haul strategy. For travelers looking to fly Ryanair, Stansted remains the definitive gateway, offering hundreds of daily flights to destinations across Europe and North Africa. While some budget-focused airlines have occasionally secured limited slots at Heathrow, Ryanair has remained steadfast in its commitment to the "secondary airport" model to ensure it can continue offering its signature budget-friendly ticket prices to millions of passengers every year.