$128 Cheap flight deals from Sioux Falls (FSD) to O'Fallon (STL)
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Airfares from $128 One Way, $595 Round Trip from Sioux Falls to O'Fallon
Prices starting at $595 for return flights and $128 for one-way flights to O'Fallon were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
O'Fallon economy flight packages
The Wildwood Hotel
Mar 25 - Mar 28
Sioux Falls (FSD) to St. Louis (STL)
Reviewed on Oct 16, 2025
The Cheshire
Mar 25 - Mar 28
Sioux Falls (FSD) to St. Louis (STL)
Reviewed on Sep 2, 2025
Angad Arts Hotel St. Louis, Tapestry Collection by Hilton
Mar 25 - Mar 28
Sioux Falls (FSD) to St. Louis (STL)
Reviewed on Jan 18, 2026
More About Flying To O'Fallon from Sioux Falls
Route Information for Flights from Sioux Falls to O'Fallon
Origin Airport IATA Code | FSD |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Sioux Falls to O'Fallon
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Flights from Sioux Falls
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Sioux Falls Airports
O'Fallon Airports
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.