Pan American World Airways inaugurated the first regularly scheduled around-the-world passenger service, with Flight 001 originating in San Francisco and flying westward over the Pacific Ocean. The route included stops in Honolulu, Hong Kong, Bangkok, Delhi, Beirut, Istanbul, Frankfurt, London, and finally New York. Eastbound Flight 002 covered the same cities in the opposite direction, ending in San Francisco. An economy-class ticket for the entire journey cost $2,300, or $4,000 for a couple. Passengers could disembark anywhere along the route and resume the journey within 180 days, enjoying the luxuries of Pan Am's Lockheed Constellations. Despite its early innovations, Pan Am faced increased competition in the 1970s, and the 1973 Arab oil embargo dealt a significant blow. The airline filed for bankruptcy protection in January 1991, marking the end of its storied history, including the iconic Flights 001 and 002.