The award cost for a round-trip flight depends on a variety of factors, including the type of rewards you use, which airline you fly, and what your flight route is. For example, a round-trip flight from Los Angeles, U.S. to Las Vegas, U.S. could cost as little as 10,000 United miles or around 8,500 Ultimate Rewards points if you’re a Chase Sapphire Preferred cardholder and you book the same flight through the Chase travel portal. Read our full Chase Sapphire Preferred review for more information.