$95 Cheap flight deals from Boston (BOS) to Southern Illinois (STL)
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This Weekend's Flight Deals from Boston to Southern Illinois
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 $95 One Way, $164 Round Trip from Boston to Southern Illinois
Prices starting at $164 for return flights and $95 for one-way flights to Southern Illinois were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Southern Illinois economy flight packages
The Cheshire
Jun 3 - Jun 7
Boston (BOS) to St. Louis (STL)
St. Louis (STL) to Boston (BOS)
Reviewed on Sep 2, 2025
Angad Arts Hotel St. Louis, Tapestry Collection by Hilton
Jun 3 - Jun 7
Boston (BOS) to St. Louis (STL)
St. Louis (STL) to Boston (BOS)
Reviewed on Jan 18, 2026
Hilton Pennywell St. Louis at the Arch
Jun 3 - Jun 7
Boston (BOS) to St. Louis (STL)
St. Louis (STL) to Boston (BOS)
Reviewed on Apr 19, 2026
More About Flying To Southern Illinois from Boston
Route Information for Flights from Boston to Southern Illinois
Origin Airport IATA Code | BOS |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Boston to Southern Illinois
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Best Deals At Your Fingertips
Orbitz combines low prices on Boston to Southern Illinois flights with discounts on quality hotels. Using Orbitz’s Display Matrix, you can see all your options and savings easily. With our low price guarantee, you know you have the best deals at your fingertips.
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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.