$107 Cheap flight deals from Boston (BOS) to O'Fallon (STL)
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This Weekend's Flight Deals from Boston 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 $107 One Way, $233 Round Trip from Boston to O'Fallon
Prices starting at $233 for return flights and $107 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 Cheshire
Feb 20 - Feb 23
Boston (BOS) to St. Louis (STL)
Reviewed on Sep 2, 2025
Hotel Saint Louis, Autograph Collection
Feb 20 - Feb 23
Boston (BOS) to St. Louis (STL)
Reviewed on Aug 17, 2021
O'Fallon packages with premium economy flights
The Wildwood Hotel
Feb 20 - Feb 23
Boston (BOS) to St. Louis (STL)
Reviewed on Oct 16, 2025
Ameristar Casino Resort and Spa
Feb 20 - Feb 23
Boston (BOS) to St. Louis (STL)
Reviewed on Dec 2, 2025
The Knight Center at Washington University
Feb 20 - Feb 23
Boston (BOS) to St. Louis (STL)
Reviewed on Sep 15, 2025
More About Flying To O'Fallon from Boston
Route Information for Flights from Boston to O'Fallon
Origin Airport IATA Code | BOS |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Boston to O'Fallon
It has never been easier to find cheap Boston to O'Fallon flights. Orbitz has some of the best deals around to save you more money on your flight, hotel, and vacation package for the trip you have been waiting for.
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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.