$197 Cheap flight deals from Montgomery (MGM) to O'Fallon (STL)
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Airfares from $197 One Way, $363 Round Trip from Montgomery to O'Fallon
Prices starting at $363 for return flights and $197 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
Nov 14 - Nov 17
Montgomery (MGM) to St. Louis (STL)
Reviewed on Sep 2, 2025
DoubleTree by Hilton St. Louis Forest Park
Nov 14 - Nov 17
Montgomery (MGM) to St. Louis (STL)
Reviewed on Sep 30, 2025
More About Flying To O'Fallon from Montgomery
Route Information for Flights from Montgomery to O'Fallon
Origin Airport IATA Code | MGM |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Montgomery to O'Fallon
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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.