Travelers have found that booking a Sunday departure is the best way to save up to 61% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
Users have found that booking a flight from Washington Dulles Intl to Sioux Falls at least 25 days early can save you up to 20% on average compared to booking a flight this week. If booking 25 days before your flight isn’t an option for you, users have found flights from Washington Dulles Intl to Sioux Falls for as little as $420 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $449 for flights departing within the next 3 days.
Due to multiple factors, expect to potentially pay more when booking in October. For low rates, August can be a great choice for travel to Sioux Falls. Flights to Sioux Falls from Washington Dulles Intl in August are about $374 on average during August, but can be found for as low as $133.
A simple way to save on the total cost of your ticket is to fly from Washington Dulles Intl to Sioux Falls in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.