Wednesday is generally a great day to depart. Flying on this day could help you save up to 82%.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 96% on flights from Great Falls to St Louis compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $374. For sooner than that we have options available in the next 3 days from $553.
August can be a great time to fly to St Louis from Great Falls with a flight ticket averaging about $266. Cheapflights users have found deals in the month of August for as cheap as $158. The most expensive prices can be found in the month of December.
A simple way to save on the total cost of your ticket is to fly from Great Falls to St Louis at noon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the morning.