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The cheapest flights to O'Fallon were $41 for round trip flights and $21 for one-way flights in the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Reviewed on Jun 14, 2019
Reviewed on Sep 14, 2009
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*Savings based on all holiday package bookings with Flight + Hotel on CheapTickets.com from January through December 2017, as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages. For Free Flight or 100% Off Flight deals, package savings is greater than or equal to the current cost of one component, when both are priced separately.