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This Weekend's Flight Deals from Seattle 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 $75 One Way, $134 Round Trip from Seattle to O'Fallon
Prices starting at $134 for return flights and $75 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 Royal Sonesta Chase Park Plaza St. Louis
Dec 25 - Dec 27
Seattle (SEA) to St. Louis (STL)
St. Louis (STL) to Seattle (SEA)
Reviewed on Jan 12, 2024
The Wildwood Hotel
Dec 25 - Dec 27
Seattle (SEA) to St. Louis (STL)
St. Louis (STL) to Seattle (SEA)
Reviewed on Jul 23, 2024
The Westin St. Louis
Dec 25 - Dec 27
Seattle (SEA) to St. Louis (STL)
St. Louis (STL) to Seattle (SEA)
Reviewed on Oct 5, 2024
More About Flying To O'Fallon from Seattle
Route Information for Flights from Seattle to O'Fallon
Origin Airport IATA Code | SEA |
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Destination Airport IATA Code | STL |
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Seattle to O'Fallon
Orbitz is your one-stop source for great online deals on {origin.name} to O'Fallon flights. With our cutting-edge mobile tools and low fares, you are never far from finding fantastic savings on flights from Seattle to O'Fallon.
Unbeatable Deals for Flights From Seattle to O'Fallon
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Easy Flight Cancellation
In most cases, you can cancel flights from Seattle to O'Fallon online with the same ease as you booked them.
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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.