$106 Cheap flight deals from Portland (PDX) to O'Fallon (STL)
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This Weekend's Flight Deals from Portland to O'Fallon
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $106 One Way, $185 Round Trip from Portland to O'Fallon
Prices starting at $185 for return flights and $106 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 Principal Hotel
Jun 5 - Jun 7
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Angad Arts Hotel St. Louis, Tapestry Collection by Hilton
Jun 5 - Jun 7
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Reviewed on Jan 18, 2026
Hampton Inn & Suites Clayton/St. Louis-Galleria Area
Jun 5 - Jun 7
Portland (PDX) to St. Louis (STL)
St. Louis (STL) to Portland (PDX)
Reviewed on Apr 20, 2022
More About Flying To O'Fallon from Portland
Route Information for Flights from Portland to O'Fallon
Origin Airport IATA Code | PDX |
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Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Portland to O'Fallon
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Flights from Portland
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- Portland to Dallas
- Portland to London
- Portland to San Francisco
- Portland to Seattle
- Portland to Orlando
- Portland to Detroit
- Portland to Paris
- Portland to New Orleans
- Portland to Washington
- Portland to Toronto
- Portland to Bangkok
- Portland to Kansas City
- Portland to Beijing
- Portland to Montreal
- Portland to Edmonton
Portland Airports
O'Fallon Airports
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.