$121 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 $121 One Way, $232 Round Trip from Boston to O'Fallon
Prices starting at $232 for return flights and $121 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
Baymont by Wyndham Rolla
Jul 25 - Jul 28
Boston (BOS) to St. Louis (STL)
Reviewed on Apr 1, 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 | 1043 mi |
Direct Flight Airlines | American Airlines, Southwest Airlines |
Earliest Flight Arrival | 12:45PM UTC |
Latest Flight Arrival | 1:25AM UTC |
Boston to O'Fallon
Orbitz is the best place to find guaranteed low prices on Boston to O'Fallon flights. Because of our cutting-edge mobile tools and low fares on domestic and international flights, Orbitz is the best starting point for travelers.
Find Cheap Boston to O'Fallon Flights
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Discount Travel Planning Made Simple
You will have no problems finding budget flights from Boston to O'Fallon on Orbitz.com. If your travel plans are flexible, you can search for fares three days before and after a specific date to find the best price.
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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.