Yes, there are multiple flights from Edmonton to Great Falls for under C$ 879. The cheapest flight booked recently is on Multiple Airlines for just C$ 802, but on average you can expect to pay C$ 804.
There are no direct flights from Edmonton to Great Falls, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
In Edmonton, there will be same rainfall in Edmonton compared to Great Falls over the next 8 days.
With an average temperature of 30 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in Great Falls are hotter than in Edmonton.