
$74 Cheap flight deals from Philadelphia (ILG) to O'Fallon (STL)
Earn rewards on top of your airline miles with Orbitz Rewards
Many airlines offer flexible change policies
Sign up to receive text alerts about your trip
This Weekend's Flight Deals from Philadelphia 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 $74 One Way, $131 Round Trip from Philadelphia to O'Fallon
Prices starting at $131 for return flights and $74 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 Wildwood Hotel
Apr 1 - Apr 4
Philadelphia (PHL) to St. Louis (STL)
Reviewed on Oct 16, 2025


Ameristar Casino Resort and Spa
Apr 1 - Apr 4
Philadelphia (PHL) to St. Louis (STL)
Reviewed on Dec 2, 2025
More About Flying To O'Fallon from Philadelphia
Route Information for Flights from Philadelphia to O'Fallon
Origin Airport IATA Code | ILG |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Philadelphia to O'Fallon
Smart business means on-the-spot travel planning at budget prices. Orbitz On-the-Go can help by using cutting-edge mobile tools and guaranteed low prices. Orbitz On-the-Go is your go-to for bargain flights from Philadelphia to O'Fallon, and discount Philadelphia to O'Fallon flights.
Business Development
Boosting sales with multiple presentations within a day or week? Then easily book cheap domestic flights from Philadelphia to O'Fallon. Are you expanding into emerging markets? Find low-fare deals on international Philadelphia to O'Fallon flights. Orbitz On-the-Go mobile apps keep it simple.
Continuing Education
Successful business people know that keeping your edge in business means staying in training. Find a low-cost air ticket for your next workshop with Orbitz flights from Philadelphia to O'Fallon. Move to the head of the seminar with Orbitz On-the-Go’s guaranteed low prices on Philadelphia to O'Fallon flights.
Budget Planning
Orbitz allows you to focus on the income, while we reduce your expenses with guaranteed low prices. Your bottom line is bound to improve with our bargain flights from Philadelphia to O'Fallon and discount Philadelphia to O'Fallon flights. Watch your business thrive.
Time Management
Time is money, and Orbitz On-the-Go saves both. Our cutting-edge mobile tools make business travel planning quick and easy, even for same-day reservations. It’s not unusual for our clients to save big on same-day tickets for Philadelphia to {destination.name} flights. Free alerts keep you on time with flight, gate and baggage updates, plus other time-saving features.
Flights from Philadelphia
- Philadelphia to Houston
- Philadelphia to London
- Philadelphia to Orlando
- Philadelphia to Buenos Aires
- Philadelphia to Charlotte
- Philadelphia to Chicago
- Philadelphia to Los Angeles
- Philadelphia to New York
- Philadelphia to Toronto
- Philadelphia to Berlin
- Philadelphia to Paris
- Philadelphia to Rome
- Philadelphia to Bucharest
- Philadelphia to San Diego
- Philadelphia to Atlanta
- Philadelphia to Baltimore
- Philadelphia to Beijing
- Philadelphia to Boston
- Philadelphia to Dallas
- Philadelphia to Denver
O'Fallon Airports
More Destinations
- Flights from Green Bay to Grafton
- Flights from Baltimore to Grafton
- Flights from Cleveland to Grafton
- Flights from Detroit to Grafton
- Flights from Miami to Grafton
- Flights from Minneapolis - St. Paul to Grafton
- Flights from Orlando to Grafton
- Flights from Barcelona to Grafton
- Flights from Eureka to Grafton
- Flights from Santa Barbara to Grafton
- Flights from Milwaukee to Grafton
- Flights from Shreveport to Grafton
- Flights from Tampa to Grafton
- Flights from White Plains to Grafton
- Flights from Biloxi to Grafton
- Flights from State College to Grafton
- Flights from Macon to Grafton
- Flights from Rapid City to Grafton
- Flights from Sioux Falls to Grafton
- Flights from Atlanta to Caseyville
- Flights from Nashville to Caseyville
- Flights from New Orleans to Caseyville
- Flights from Hilton Head Island to Caseyville
- Flights from Princeton to Caseyville
- Flights from El Paso to Belleville
- Flights from Florence to Belleville
- Flights from Grand Junction to Belleville
- Flights from Anchorage to Belleville
- Flights from Bogotá to Belleville
- Flights from Charlotte to Belleville
- Flights from Lima to Belleville
- Flights from Minneapolis - St. Paul to Belleville
- Flights from Portland to Belleville
- Flights from San Francisco to Belleville
- Flights from Cancun to Belleville
- Flights from St. Petersburg to Belleville
- Flights from Sacramento to Belleville
- Flights from Jacksonville to Belleville
- Flights from St. George to Belleville
- Flights from Bakersfield to Belleville
- Flights from Hilton Head Island to Belleville
- Flights from Newburgh to Belleville
- Flights from Bloomington to Belleville
- Flights from Shreveport to Belleville
- Flights from Spokane to Belleville
- Flights from Dayton to Belleville
- Flights from Huntsville to Belleville
- Flights from Tucson to Belleville
- Flights from Tampa to Belleville
- Flights from Boise to Belleville
- Flights from Binghamton to Belleville
- Flights from Fayetteville to Belleville
- Flights from Bangor to Belleville
- Flights from Newport News to Belleville
- Flights from State College to Belleville
- Flights from Fort Smith to Belleville
- Flights from Fargo to Belleville
- Flights from Covington to Belleville
- Flights from Sioux Falls to Belleville
- Flights from Washington (DCA) to Belleville (BLV)
- Flights from Indianapolis (IND) to Belleville (BLV)
- Flights from New York (JFK) to Belleville (BLV)
- Flights from Minneapolis (MSP) to Belleville (BLV)
- Flights from Punta Gorda Airport (PGD) to Belleville (BLV)
- Flights from Fayetteville (XNA) to Belleville (BLV)
- Flights from El Paso to Fairview Heights
- Flights from Wilmington to Fairview Heights
- Flights from Atlanta to Fairview Heights
- Flights from Boston to Fairview Heights
- Flights from Chicago to Fairview Heights
- Flights from Dallas to Fairview Heights
- Flights from Denver to Fairview Heights
- Flights from Detroit to Fairview Heights
- Flights from Houston to Fairview Heights
- Flights from Miami to Fairview Heights
- Flights from Minneapolis - St. Paul to Fairview Heights
- Flights from Portland to Fairview Heights
- Flights from Salt Lake City to Fairview Heights
- Flights from San Antonio to Fairview Heights
- Flights from Seattle to Fairview Heights
- Flights from Pittsburgh to Fairview Heights
- Flights from Newport News to Fairview Heights
- Flights from Charlottesville to Fairview Heights
- Flights from Columbia to Fairview Heights
- Flights from Aberdeen to Greenville
- Flights from Manchester to Alton
- Flights from Salt Lake City to Mascoutah
- Flights from Columbus (CMH) to Marion (MWA)
- Flights from Harrisburg (MDT) to Marion (MWA)
- Flights from Osh (OSS) to Marion (MWA)
- Flights from Sharjah (SHJ) to Marion (MWA)
- Flights from Sogndal (SOG) to Marion (MWA)
- Flights from Santarem (STM) to Marion (MWA)
- Flights from Tbilisi (TBS) to Marion (MWA)
- Flights from Jinan (TNA) to Marion (MWA)
- Flights from Tangier (TNG) to Marion (MWA)
- Flights from Whangarei (WRE) to Marion (MWA)
- Flights from Zürich (ZRH) to Marion (MWA)
- Flights from Boston to Southern Illinois
- Flights from Minneapolis - St. Paul to Southern Illinois
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.

