I'm booking a flight for a bachelor party in April, and with 3 upcoming weddings as a groomsmen (and bachelor parties) and my own wedding (which we are paying for) all happening this spring, I'm looking to save money wherever I can. I'm considering booking my initial flight (a Thursday flight) from VA to Las Vegas on one airline and my return flight (a Sunday flight) on another airline. I've checked all the discount roundtrip places, and these 2 flights will be $100 cheaper than a roundtrip through Expedia or any other discounter I've found. Are there any downsides to booking this way? Keep in mind that I do not travel frequently enough to worry about accumulating points.