$139 Cheap American Airlines flights Chicago (ORD) to Sioux Falls (FSD)

Apply the "Price (lowest to highest)" filter on Expedia to search for cheap American Airlines return flights from $189 from ORD to FSD. Affordable one-way tickets from $139 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To find cheap American Airlines fares from O'Hare Intl. Airport (ORD) to Sioux Falls Regional Airport (FSD), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall cost. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Taking off from ORD at 9:54AM UTC-6, the first American Airlines flight to FSD arrives at 11:45AM UTC-6. Flying early means you'll be less likely to encounter delays.* Prefer to travel later? The last American Airlines flight from ORD to FSD departs at 9:00PM UTC-6 and touches down at 10:51PM UTC-6.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.