Heads up, deal hunters! There's a sweet fare popping up for flights to Luxembourg for under $400. The Flight Deal spotted it, and it's worth checking out if you're dreaming of exploring this charming European gem without breaking the bank. The magic happens when you use the Matrix Airfare Search by ITA Software to find the dates, but remember that the initial price you see there might be for a Basic Economy ticket. Why does this matter? Well, cheap flights to Europe are always a win, especially to a smaller country like Luxembourg that's often overlooked but has a ton to offer. Basic Economy usually means fewer frills (think: no free checked bags or seat selection), so factor in any extra costs for luggage, but even with those add-ons, you're likely still getting a fantastic deal. Snag this one quick if you're interested!