Question : In the next four weeks, what day should you book your trip?
Answer : As of January 23rd, the best day for booking to Brussels (BRU) from Saint Louis (STL) is February 1st. Bookings have been made roughly 37% below the average price for this route.
Question : How long are most people's visits to Brussels when they fly in from Saint Louis?
Answer : Of course you're not most people, but if you were, you'd stay roughly nine days.
Question : Will you do what it takes to get the absolute cheapest flight?
Answer : Thursday is your lowest-cost day to fly in February. Being flexible with your travel days garners you even more savings during your booking.
Question : Do prices fluctuate more for this route than others?
Answer : Prices for this trip tend to change much more than others. However, the sooner you book, the better price you tend to get.