Question : If your plans are flexible, have you considered changing your departure day?
Answer : The best day to fly on a budget this month is Tuesday. Being flexible with your travel days garners you even more savings during your booking.
Question : What's the likelihood of you being delayed on this route?
Answer : The best way to measure a flight's promptness combines both on-time percentage and total delay minutes. YUL to STL currently has 0.1 stars out of 5, earning the route one of the lower scores in the world.