Cheap flights from Chicago O'Hare Intl Airport to South Dakota from $120

The month of December is, on average, the cheapest month to fly to South Dakota from Chicago O'Hare Intl Airport, with most prices found around $189. If you aren’t able to travel to South Dakota during the month of December, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $189.

The cheapest day to depart from Chicago O'Hare Intl Airport to South Dakota is on a Wednesday. Travelers who choose to depart for South Dakota on a Wednesday will often find tickets for as low as $249. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $470. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

The cheapest time of day to fly to South Dakota is in the evening when flights can be purchased for as low as $305. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $374 per ticket.

Fly from Chicago O'Hare Intl to Watertown for the best Chicago O'Hare Intl - South Dakota flight prices

There are 4 cabin classes available to choose from on Chicago O'Hare Intl Airport to South Dakota flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 18% on your flight if you consider stops on a Chicago O'Hare Intl Airport to South Dakota flight.

The number of flights available between Chicago O'Hare Intl Airport and South Dakota is 23 per day as of June 2026. The most frequent departure time is 8:00AM, with 36% of daily flights leaving in the evening.

As of June 2026, 166 flights take off from Chicago O'Hare Intl Airport and land in South Dakota each week. The most common flight departure day for this route is Thu, with 16% of weekly flights taking off on this day.