Hey awardtrail fam! Fancy a trip to Barcelona without breaking the bank? United and its Star Alliance partners (think Air Canada, Austrian, Lufthansa, and Swiss Air) are offering roundtrip flights to Barcelona for as low as $669! That's a pretty sweet deal for a European getaway. These are for regular economy tickets. Why should you care? Well, Barcelona is an amazing city with stunning architecture, delicious food, and a vibrant culture. And with prices this low, it's a great opportunity to use those travel rewards you've been hoarding! Check dates and availability quickly, as fares like these tend to disappear fast.